./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound10.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_1c45c8fe-1f41-4850-92a8-1e5d216404c1/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_1c45c8fe-1f41-4850-92a8-1e5d216404c1/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1c45c8fe-1f41-4850-92a8-1e5d216404c1/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1c45c8fe-1f41-4850-92a8-1e5d216404c1/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound10.c -s /tmp/vcloud-vcloud-master/worker/run_dir_1c45c8fe-1f41-4850-92a8-1e5d216404c1/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1c45c8fe-1f41-4850-92a8-1e5d216404c1/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 0d9c2ff65d0646ac972245f80cb55c586f722a41 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 20:28:10,863 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:28:10,866 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:28:10,933 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:28:10,933 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:28:10,935 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:28:10,937 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:28:10,939 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:28:10,941 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:28:10,943 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:28:10,944 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:28:10,945 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:28:10,946 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:28:10,947 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:28:10,949 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:28:10,950 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:28:10,951 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:28:10,953 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:28:10,955 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:28:10,957 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:28:10,960 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:28:10,962 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:28:10,963 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:28:10,965 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:28:10,968 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:28:10,969 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:28:10,969 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:28:10,970 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:28:10,971 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:28:10,972 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:28:10,973 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:28:10,974 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:28:10,975 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:28:10,976 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:28:10,977 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:28:10,978 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:28:10,979 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:28:10,979 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:28:10,980 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:28:10,981 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:28:10,982 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:28:10,983 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1c45c8fe-1f41-4850-92a8-1e5d216404c1/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 20:28:11,008 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:28:11,008 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:28:11,010 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:28:11,010 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:28:11,010 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:28:11,011 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:28:11,011 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 20:28:11,011 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 20:28:11,012 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 20:28:11,012 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:28:11,012 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 20:28:11,012 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 20:28:11,013 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 20:28:11,013 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 20:28:11,013 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 20:28:11,013 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:28:11,014 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 20:28:11,014 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:28:11,014 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:28:11,014 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 20:28:11,015 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 20:28:11,015 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:28:11,015 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:28:11,015 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 20:28:11,016 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 20:28:11,016 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 20:28:11,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 20:28:11,016 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 20:28:11,017 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:28:11,017 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_1c45c8fe-1f41-4850-92a8-1e5d216404c1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_1c45c8fe-1f41-4850-92a8-1e5d216404c1/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d9c2ff65d0646ac972245f80cb55c586f722a41 [2020-11-29 20:28:11,279 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:28:11,318 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:28:11,321 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:28:11,322 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:28:11,324 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:28:11,325 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1c45c8fe-1f41-4850-92a8-1e5d216404c1/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound10.c [2020-11-29 20:28:11,410 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1c45c8fe-1f41-4850-92a8-1e5d216404c1/bin/uautomizer/data/260bd7b28/4352f35d29ad440eb1180c6fb3c1df61/FLAG718ec234e [2020-11-29 20:28:11,879 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:28:11,880 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1c45c8fe-1f41-4850-92a8-1e5d216404c1/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound10.c [2020-11-29 20:28:11,887 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1c45c8fe-1f41-4850-92a8-1e5d216404c1/bin/uautomizer/data/260bd7b28/4352f35d29ad440eb1180c6fb3c1df61/FLAG718ec234e [2020-11-29 20:28:12,267 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1c45c8fe-1f41-4850-92a8-1e5d216404c1/bin/uautomizer/data/260bd7b28/4352f35d29ad440eb1180c6fb3c1df61 [2020-11-29 20:28:12,269 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:28:12,270 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 20:28:12,272 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:28:12,272 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:28:12,275 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:28:12,276 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:28:12" (1/1) ... [2020-11-29 20:28:12,278 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3148a88e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:28:12, skipping insertion in model container [2020-11-29 20:28:12,278 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:28:12" (1/1) ... [2020-11-29 20:28:12,296 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:28:12,313 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:28:12,497 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:28:12,507 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:28:12,526 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:28:12,540 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:28:12,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:28:12 WrapperNode [2020-11-29 20:28:12,541 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:28:12,542 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 20:28:12,542 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 20:28:12,542 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 20:28:12,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:28:12" (1/1) ... [2020-11-29 20:28:12,558 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:28:12" (1/1) ... [2020-11-29 20:28:12,582 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 20:28:12,583 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:28:12,583 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:28:12,583 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:28:12,589 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:28:12" (1/1) ... [2020-11-29 20:28:12,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:28:12" (1/1) ... [2020-11-29 20:28:12,591 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:28:12" (1/1) ... [2020-11-29 20:28:12,591 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:28:12" (1/1) ... [2020-11-29 20:28:12,596 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:28:12" (1/1) ... [2020-11-29 20:28:12,601 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:28:12" (1/1) ... [2020-11-29 20:28:12,602 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:28:12" (1/1) ... [2020-11-29 20:28:12,605 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:28:12,606 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:28:12,606 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:28:12,606 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:28:12,607 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:28:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c45c8fe-1f41-4850-92a8-1e5d216404c1/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 [2020-11-29 20:28:12,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 20:28:12,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 20:28:12,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:28:12,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:28:13,106 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:28:13,108 INFO L298 CfgBuilder]: Removed 36 assume(true) statements. [2020-11-29 20:28:13,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:28:13 BoogieIcfgContainer [2020-11-29 20:28:13,110 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:28:13,112 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 20:28:13,113 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 20:28:13,117 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 20:28:13,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 08:28:12" (1/3) ... [2020-11-29 20:28:13,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d67ccfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:28:13, skipping insertion in model container [2020-11-29 20:28:13,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:28:12" (2/3) ... [2020-11-29 20:28:13,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d67ccfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:28:13, skipping insertion in model container [2020-11-29 20:28:13,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:28:13" (3/3) ... [2020-11-29 20:28:13,122 INFO L111 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_unwindbound10.c [2020-11-29 20:28:13,133 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 20:28:13,139 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-11-29 20:28:13,155 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-11-29 20:28:13,198 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 20:28:13,199 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 20:28:13,200 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 20:28:13,200 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:28:13,200 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:28:13,200 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 20:28:13,201 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:28:13,201 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 20:28:13,216 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-11-29 20:28:13,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 20:28:13,221 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:28:13,222 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:28:13,223 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]=== [2020-11-29 20:28:13,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:28:13,229 INFO L82 PathProgramCache]: Analyzing trace with hash 122552587, now seen corresponding path program 1 times [2020-11-29 20:28:13,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:28:13,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455045250] [2020-11-29 20:28:13,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:28:13,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:28:13,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:28:13,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455045250] [2020-11-29 20:28:13,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:28:13,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 20:28:13,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048366694] [2020-11-29 20:28:13,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 20:28:13,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:28:13,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 20:28:13,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 20:28:13,391 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2020-11-29 20:28:13,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:28:13,428 INFO L93 Difference]: Finished difference Result 79 states and 104 transitions. [2020-11-29 20:28:13,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 20:28:13,429 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-29 20:28:13,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:28:13,438 INFO L225 Difference]: With dead ends: 79 [2020-11-29 20:28:13,439 INFO L226 Difference]: Without dead ends: 37 [2020-11-29 20:28:13,442 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 [2020-11-29 20:28:13,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-29 20:28:13,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-11-29 20:28:13,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-11-29 20:28:13,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2020-11-29 20:28:13,477 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 8 [2020-11-29 20:28:13,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:28:13,477 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2020-11-29 20:28:13,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 20:28:13,478 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2020-11-29 20:28:13,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 20:28:13,478 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:28:13,478 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:28:13,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 20:28:13,479 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]=== [2020-11-29 20:28:13,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:28:13,480 INFO L82 PathProgramCache]: Analyzing trace with hash 176704684, now seen corresponding path program 1 times [2020-11-29 20:28:13,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:28:13,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991135165] [2020-11-29 20:28:13,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:28:13,501 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:28:13,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1821209913] [2020-11-29 20:28:13,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c45c8fe-1f41-4850-92a8-1e5d216404c1/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 [2020-11-29 20:28:13,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:28:13,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-29 20:28:13,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:28:13,654 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 20:28:13,654 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:28:13,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:28:13,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991135165] [2020-11-29 20:28:13,734 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:28:13,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821209913] [2020-11-29 20:28:13,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:28:13,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 20:28:13,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751118217] [2020-11-29 20:28:13,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 20:28:13,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:28:13,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 20:28:13,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-29 20:28:13,738 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand 6 states. [2020-11-29 20:28:14,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:28:14,143 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2020-11-29 20:28:14,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 20:28:14,144 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-11-29 20:28:14,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:28:14,145 INFO L225 Difference]: With dead ends: 51 [2020-11-29 20:28:14,145 INFO L226 Difference]: Without dead ends: 49 [2020-11-29 20:28:14,146 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-11-29 20:28:14,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-11-29 20:28:14,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 40. [2020-11-29 20:28:14,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-29 20:28:14,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-11-29 20:28:14,169 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 8 [2020-11-29 20:28:14,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:28:14,169 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-11-29 20:28:14,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 20:28:14,169 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-11-29 20:28:14,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 20:28:14,170 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:28:14,170 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:28:14,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-29 20:28:14,397 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]=== [2020-11-29 20:28:14,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:28:14,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1182912719, now seen corresponding path program 1 times [2020-11-29 20:28:14,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:28:14,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886429207] [2020-11-29 20:28:14,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:28:14,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:28:14,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:28:14,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886429207] [2020-11-29 20:28:14,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:28:14,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:28:14,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925873439] [2020-11-29 20:28:14,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:28:14,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:28:14,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:28:14,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:28:14,450 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 4 states. [2020-11-29 20:28:14,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:28:14,480 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2020-11-29 20:28:14,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:28:14,481 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-29 20:28:14,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:28:14,482 INFO L225 Difference]: With dead ends: 44 [2020-11-29 20:28:14,482 INFO L226 Difference]: Without dead ends: 40 [2020-11-29 20:28:14,482 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 [2020-11-29 20:28:14,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-11-29 20:28:14,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-11-29 20:28:14,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-29 20:28:14,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2020-11-29 20:28:14,490 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 9 [2020-11-29 20:28:14,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:28:14,490 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2020-11-29 20:28:14,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:28:14,490 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2020-11-29 20:28:14,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 20:28:14,491 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:28:14,491 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:28:14,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 20:28:14,492 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]=== [2020-11-29 20:28:14,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:28:14,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1985303953, now seen corresponding path program 1 times [2020-11-29 20:28:14,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:28:14,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989840045] [2020-11-29 20:28:14,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:28:14,508 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:28:14,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1904038620] [2020-11-29 20:28:14,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c45c8fe-1f41-4850-92a8-1e5d216404c1/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 [2020-11-29 20:28:14,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:28:14,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-29 20:28:14,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:28:14,613 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 20:28:14,613 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:28:14,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:28:14,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989840045] [2020-11-29 20:28:14,663 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:28:14,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904038620] [2020-11-29 20:28:14,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:28:14,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 20:28:14,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125845614] [2020-11-29 20:28:14,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 20:28:14,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:28:14,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 20:28:14,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-29 20:28:14,666 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand 6 states. [2020-11-29 20:28:14,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:28:14,960 INFO L93 Difference]: Finished difference Result 74 states and 81 transitions. [2020-11-29 20:28:14,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 20:28:14,961 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-11-29 20:28:14,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:28:14,962 INFO L225 Difference]: With dead ends: 74 [2020-11-29 20:28:14,962 INFO L226 Difference]: Without dead ends: 66 [2020-11-29 20:28:14,963 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 [2020-11-29 20:28:14,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-11-29 20:28:14,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 53. [2020-11-29 20:28:14,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-11-29 20:28:14,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2020-11-29 20:28:14,980 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 10 [2020-11-29 20:28:14,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:28:14,981 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2020-11-29 20:28:14,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 20:28:14,981 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2020-11-29 20:28:14,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 20:28:14,982 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:28:14,982 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:28:15,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:28:15,205 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]=== [2020-11-29 20:28:15,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:28:15,206 INFO L82 PathProgramCache]: Analyzing trace with hash 290615803, now seen corresponding path program 1 times [2020-11-29 20:28:15,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:28:15,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673476477] [2020-11-29 20:28:15,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:28:15,220 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:28:15,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [974157787] [2020-11-29 20:28:15,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c45c8fe-1f41-4850-92a8-1e5d216404c1/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 [2020-11-29 20:28:15,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:28:15,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 20:28:15,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:28:15,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:28:15,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673476477] [2020-11-29 20:28:15,320 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:28:15,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974157787] [2020-11-29 20:28:15,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:28:15,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:28:15,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878787380] [2020-11-29 20:28:15,321 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:28:15,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:28:15,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:28:15,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:28:15,322 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand 4 states. [2020-11-29 20:28:15,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:28:15,468 INFO L93 Difference]: Finished difference Result 104 states and 123 transitions. [2020-11-29 20:28:15,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 20:28:15,471 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-11-29 20:28:15,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:28:15,473 INFO L225 Difference]: With dead ends: 104 [2020-11-29 20:28:15,474 INFO L226 Difference]: Without dead ends: 98 [2020-11-29 20:28:15,474 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 [2020-11-29 20:28:15,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-11-29 20:28:15,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 75. [2020-11-29 20:28:15,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-11-29 20:28:15,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 91 transitions. [2020-11-29 20:28:15,496 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 91 transitions. Word has length 14 [2020-11-29 20:28:15,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:28:15,497 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 91 transitions. [2020-11-29 20:28:15,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:28:15,498 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 91 transitions. [2020-11-29 20:28:15,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 20:28:15,499 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:28:15,499 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:28:15,699 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:28:15,700 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]=== [2020-11-29 20:28:15,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:28:15,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1284273978, now seen corresponding path program 1 times [2020-11-29 20:28:15,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:28:15,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995897472] [2020-11-29 20:28:15,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:28:15,713 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:28:15,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [319075435] [2020-11-29 20:28:15,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c45c8fe-1f41-4850-92a8-1e5d216404c1/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 [2020-11-29 20:28:15,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:28:15,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 20:28:15,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:28:15,833 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:28:15,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995897472] [2020-11-29 20:28:15,834 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:28:15,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319075435] [2020-11-29 20:28:15,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:28:15,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:28:15,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072551660] [2020-11-29 20:28:15,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 20:28:15,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:28:15,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 20:28:15,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:28:15,836 INFO L87 Difference]: Start difference. First operand 75 states and 91 transitions. Second operand 5 states. [2020-11-29 20:28:15,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:28:15,885 INFO L93 Difference]: Finished difference Result 121 states and 145 transitions. [2020-11-29 20:28:15,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 20:28:15,886 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-29 20:28:15,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:28:15,887 INFO L225 Difference]: With dead ends: 121 [2020-11-29 20:28:15,887 INFO L226 Difference]: Without dead ends: 75 [2020-11-29 20:28:15,888 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 [2020-11-29 20:28:15,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-11-29 20:28:15,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-11-29 20:28:15,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-11-29 20:28:15,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 90 transitions. [2020-11-29 20:28:15,898 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 90 transitions. Word has length 18 [2020-11-29 20:28:15,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:28:15,898 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 90 transitions. [2020-11-29 20:28:15,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 20:28:15,899 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 90 transitions. [2020-11-29 20:28:15,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 20:28:15,899 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:28:15,899 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:28:16,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:28:16,100 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]=== [2020-11-29 20:28:16,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:28:16,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1766286401, now seen corresponding path program 1 times [2020-11-29 20:28:16,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:28:16,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588405420] [2020-11-29 20:28:16,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:28:16,109 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:28:16,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [217641679] [2020-11-29 20:28:16,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c45c8fe-1f41-4850-92a8-1e5d216404c1/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 [2020-11-29 20:28:16,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:28:16,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 20:28:16,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:28:16,188 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 20:28:16,188 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:28:16,217 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:28:16,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:28:16,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588405420] [2020-11-29 20:28:16,273 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:28:16,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217641679] [2020-11-29 20:28:16,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:28:16,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 20:28:16,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659481602] [2020-11-29 20:28:16,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 20:28:16,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:28:16,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 20:28:16,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-29 20:28:16,275 INFO L87 Difference]: Start difference. First operand 75 states and 90 transitions. Second operand 6 states. [2020-11-29 20:28:16,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:28:16,457 INFO L93 Difference]: Finished difference Result 82 states and 99 transitions. [2020-11-29 20:28:16,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 20:28:16,458 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-11-29 20:28:16,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:28:16,459 INFO L225 Difference]: With dead ends: 82 [2020-11-29 20:28:16,459 INFO L226 Difference]: Without dead ends: 80 [2020-11-29 20:28:16,459 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 [2020-11-29 20:28:16,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-11-29 20:28:16,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 73. [2020-11-29 20:28:16,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-11-29 20:28:16,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 85 transitions. [2020-11-29 20:28:16,469 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 85 transitions. Word has length 18 [2020-11-29 20:28:16,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:28:16,469 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 85 transitions. [2020-11-29 20:28:16,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 20:28:16,469 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 85 transitions. [2020-11-29 20:28:16,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-29 20:28:16,470 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:28:16,470 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] [2020-11-29 20:28:16,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-11-29 20:28:16,693 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]=== [2020-11-29 20:28:16,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:28:16,693 INFO L82 PathProgramCache]: Analyzing trace with hash -439927536, now seen corresponding path program 1 times [2020-11-29 20:28:16,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:28:16,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502882040] [2020-11-29 20:28:16,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:28:16,706 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:28:16,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1454859005] [2020-11-29 20:28:16,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c45c8fe-1f41-4850-92a8-1e5d216404c1/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 [2020-11-29 20:28:16,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:28:16,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-29 20:28:16,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:28:16,800 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 20:28:16,801 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:28:16,882 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:28:16,884 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:28:16,910 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:28:16,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502882040] [2020-11-29 20:28:16,911 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:28:16,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454859005] [2020-11-29 20:28:16,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 20:28:16,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-29 20:28:16,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966956004] [2020-11-29 20:28:16,912 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 20:28:16,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:28:16,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 20:28:16,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-29 20:28:16,913 INFO L87 Difference]: Start difference. First operand 73 states and 85 transitions. Second operand 7 states. [2020-11-29 20:28:17,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:28:17,340 INFO L93 Difference]: Finished difference Result 139 states and 161 transitions. [2020-11-29 20:28:17,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 20:28:17,342 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-11-29 20:28:17,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:28:17,343 INFO L225 Difference]: With dead ends: 139 [2020-11-29 20:28:17,343 INFO L226 Difference]: Without dead ends: 133 [2020-11-29 20:28:17,344 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-11-29 20:28:17,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-11-29 20:28:17,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 93. [2020-11-29 20:28:17,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-11-29 20:28:17,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 110 transitions. [2020-11-29 20:28:17,363 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 110 transitions. Word has length 24 [2020-11-29 20:28:17,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:28:17,363 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 110 transitions. [2020-11-29 20:28:17,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 20:28:17,363 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 110 transitions. [2020-11-29 20:28:17,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-29 20:28:17,364 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:28:17,369 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] [2020-11-29 20:28:17,584 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:28:17,585 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]=== [2020-11-29 20:28:17,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:28:17,585 INFO L82 PathProgramCache]: Analyzing trace with hash -2103248441, now seen corresponding path program 1 times [2020-11-29 20:28:17,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:28:17,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508198922] [2020-11-29 20:28:17,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:28:17,601 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:28:17,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1542825212] [2020-11-29 20:28:17,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c45c8fe-1f41-4850-92a8-1e5d216404c1/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 [2020-11-29 20:28:17,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:28:17,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 20:28:17,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:28:17,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:28:17,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508198922] [2020-11-29 20:28:17,710 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:28:17,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542825212] [2020-11-29 20:28:17,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 20:28:17,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-29 20:28:17,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954484702] [2020-11-29 20:28:17,711 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 20:28:17,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:28:17,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 20:28:17,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 20:28:17,711 INFO L87 Difference]: Start difference. First operand 93 states and 110 transitions. Second operand 6 states. [2020-11-29 20:28:17,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:28:17,758 INFO L93 Difference]: Finished difference Result 100 states and 117 transitions. [2020-11-29 20:28:17,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 20:28:17,758 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-11-29 20:28:17,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:28:17,759 INFO L225 Difference]: With dead ends: 100 [2020-11-29 20:28:17,759 INFO L226 Difference]: Without dead ends: 96 [2020-11-29 20:28:17,760 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-29 20:28:17,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-11-29 20:28:17,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2020-11-29 20:28:17,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-11-29 20:28:17,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 113 transitions. [2020-11-29 20:28:17,770 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 113 transitions. Word has length 24 [2020-11-29 20:28:17,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:28:17,770 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 113 transitions. [2020-11-29 20:28:17,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 20:28:17,771 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 113 transitions. [2020-11-29 20:28:17,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-29 20:28:17,771 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:28:17,772 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:28:17,984 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:28:17,985 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]=== [2020-11-29 20:28:17,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:28:17,985 INFO L82 PathProgramCache]: Analyzing trace with hash -777084809, now seen corresponding path program 1 times [2020-11-29 20:28:17,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:28:17,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773440608] [2020-11-29 20:28:17,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:28:17,996 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:28:17,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [477388942] [2020-11-29 20:28:17,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c45c8fe-1f41-4850-92a8-1e5d216404c1/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 [2020-11-29 20:28:18,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:28:18,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-29 20:28:18,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:28:18,172 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:28:18,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773440608] [2020-11-29 20:28:18,173 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:28:18,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477388942] [2020-11-29 20:28:18,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 20:28:18,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-29 20:28:18,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282233283] [2020-11-29 20:28:18,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 20:28:18,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:28:18,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 20:28:18,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-29 20:28:18,175 INFO L87 Difference]: Start difference. First operand 96 states and 113 transitions. Second operand 7 states. [2020-11-29 20:28:18,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:28:18,406 INFO L93 Difference]: Finished difference Result 166 states and 194 transitions. [2020-11-29 20:28:18,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 20:28:18,407 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-11-29 20:28:18,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:28:18,408 INFO L225 Difference]: With dead ends: 166 [2020-11-29 20:28:18,408 INFO L226 Difference]: Without dead ends: 103 [2020-11-29 20:28:18,409 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-11-29 20:28:18,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-11-29 20:28:18,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 93. [2020-11-29 20:28:18,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-11-29 20:28:18,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 109 transitions. [2020-11-29 20:28:18,421 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 109 transitions. Word has length 25 [2020-11-29 20:28:18,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:28:18,421 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 109 transitions. [2020-11-29 20:28:18,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 20:28:18,422 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 109 transitions. [2020-11-29 20:28:18,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-29 20:28:18,426 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:28:18,427 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] [2020-11-29 20:28:18,640 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-29 20:28:18,641 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]=== [2020-11-29 20:28:18,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:28:18,641 INFO L82 PathProgramCache]: Analyzing trace with hash -187977777, now seen corresponding path program 1 times [2020-11-29 20:28:18,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:28:18,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683693068] [2020-11-29 20:28:18,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:28:18,651 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:28:18,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [781121777] [2020-11-29 20:28:18,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c45c8fe-1f41-4850-92a8-1e5d216404c1/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 [2020-11-29 20:28:18,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:28:18,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 20:28:18,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:28:18,770 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:28:18,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683693068] [2020-11-29 20:28:18,771 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:28:18,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781121777] [2020-11-29 20:28:18,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 20:28:18,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-29 20:28:18,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904581641] [2020-11-29 20:28:18,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 20:28:18,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:28:18,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 20:28:18,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 20:28:18,773 INFO L87 Difference]: Start difference. First operand 93 states and 109 transitions. Second operand 6 states. [2020-11-29 20:28:18,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:28:18,815 INFO L93 Difference]: Finished difference Result 147 states and 173 transitions. [2020-11-29 20:28:18,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 20:28:18,816 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-11-29 20:28:18,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:28:18,817 INFO L225 Difference]: With dead ends: 147 [2020-11-29 20:28:18,817 INFO L226 Difference]: Without dead ends: 93 [2020-11-29 20:28:18,817 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-29 20:28:18,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-11-29 20:28:18,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2020-11-29 20:28:18,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-11-29 20:28:18,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 108 transitions. [2020-11-29 20:28:18,825 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 108 transitions. Word has length 28 [2020-11-29 20:28:18,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:28:18,826 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 108 transitions. [2020-11-29 20:28:18,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 20:28:18,826 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 108 transitions. [2020-11-29 20:28:18,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-11-29 20:28:18,827 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:28:18,827 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:28:19,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:28:19,049 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:28:19,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:28:19,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1237119461, now seen corresponding path program 2 times [2020-11-29 20:28:19,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:28:19,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421937021] [2020-11-29 20:28:19,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:28:19,065 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:28:19,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1310658605] [2020-11-29 20:28:19,066 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c45c8fe-1f41-4850-92a8-1e5d216404c1/bin/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:28:19,123 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 20:28:19,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 20:28:19,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-29 20:28:19,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:28:19,149 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 20:28:19,150 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:28:19,218 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:28:19,220 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:28:19,238 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:28:19,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421937021] [2020-11-29 20:28:19,238 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:28:19,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310658605] [2020-11-29 20:28:19,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 20:28:19,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-11-29 20:28:19,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885839575] [2020-11-29 20:28:19,239 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 20:28:19,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:28:19,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 20:28:19,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-29 20:28:19,240 INFO L87 Difference]: Start difference. First operand 93 states and 108 transitions. Second operand 8 states. [2020-11-29 20:28:19,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:28:19,831 INFO L93 Difference]: Finished difference Result 178 states and 204 transitions. [2020-11-29 20:28:19,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-29 20:28:19,832 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2020-11-29 20:28:19,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:28:19,833 INFO L225 Difference]: With dead ends: 178 [2020-11-29 20:28:19,833 INFO L226 Difference]: Without dead ends: 172 [2020-11-29 20:28:19,834 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-11-29 20:28:19,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-11-29 20:28:19,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 113. [2020-11-29 20:28:19,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-11-29 20:28:19,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 133 transitions. [2020-11-29 20:28:19,844 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 133 transitions. Word has length 34 [2020-11-29 20:28:19,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:28:19,845 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 133 transitions. [2020-11-29 20:28:19,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 20:28:19,845 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 133 transitions. [2020-11-29 20:28:19,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-11-29 20:28:19,850 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:28:19,850 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:28:20,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:28:20,077 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:28:20,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:28:20,077 INFO L82 PathProgramCache]: Analyzing trace with hash -426201444, now seen corresponding path program 1 times [2020-11-29 20:28:20,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:28:20,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531322035] [2020-11-29 20:28:20,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:28:20,090 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:28:20,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [741473962] [2020-11-29 20:28:20,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c45c8fe-1f41-4850-92a8-1e5d216404c1/bin/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:28:20,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:28:20,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 20:28:20,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:28:20,240 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:28:20,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531322035] [2020-11-29 20:28:20,240 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:28:20,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741473962] [2020-11-29 20:28:20,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 20:28:20,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-29 20:28:20,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292180533] [2020-11-29 20:28:20,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 20:28:20,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:28:20,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 20:28:20,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-29 20:28:20,242 INFO L87 Difference]: Start difference. First operand 113 states and 133 transitions. Second operand 7 states. [2020-11-29 20:28:20,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:28:20,291 INFO L93 Difference]: Finished difference Result 120 states and 140 transitions. [2020-11-29 20:28:20,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 20:28:20,292 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-11-29 20:28:20,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:28:20,293 INFO L225 Difference]: With dead ends: 120 [2020-11-29 20:28:20,293 INFO L226 Difference]: Without dead ends: 116 [2020-11-29 20:28:20,295 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-11-29 20:28:20,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-11-29 20:28:20,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2020-11-29 20:28:20,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-11-29 20:28:20,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 136 transitions. [2020-11-29 20:28:20,304 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 136 transitions. Word has length 34 [2020-11-29 20:28:20,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:28:20,305 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 136 transitions. [2020-11-29 20:28:20,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 20:28:20,305 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 136 transitions. [2020-11-29 20:28:20,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-11-29 20:28:20,306 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:28:20,307 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:28:20,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-11-29 20:28:20,521 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:28:20,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:28:20,521 INFO L82 PathProgramCache]: Analyzing trace with hash -328235454, now seen corresponding path program 1 times [2020-11-29 20:28:20,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:28:20,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162418795] [2020-11-29 20:28:20,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:28:20,530 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:28:20,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [81926565] [2020-11-29 20:28:20,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c45c8fe-1f41-4850-92a8-1e5d216404c1/bin/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:28:20,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:28:20,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 23 conjunts are in the unsatisfiable core [2020-11-29 20:28:20,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:28:20,745 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:28:20,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162418795] [2020-11-29 20:28:20,745 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:28:20,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81926565] [2020-11-29 20:28:20,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 20:28:20,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-11-29 20:28:20,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311904259] [2020-11-29 20:28:20,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 20:28:20,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:28:20,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 20:28:20,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-29 20:28:20,749 INFO L87 Difference]: Start difference. First operand 116 states and 136 transitions. Second operand 9 states. [2020-11-29 20:28:21,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:28:21,112 INFO L93 Difference]: Finished difference Result 187 states and 218 transitions. [2020-11-29 20:28:21,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-29 20:28:21,113 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-11-29 20:28:21,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:28:21,114 INFO L225 Difference]: With dead ends: 187 [2020-11-29 20:28:21,114 INFO L226 Difference]: Without dead ends: 179 [2020-11-29 20:28:21,115 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2020-11-29 20:28:21,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-11-29 20:28:21,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 138. [2020-11-29 20:28:21,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-11-29 20:28:21,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 162 transitions. [2020-11-29 20:28:21,127 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 162 transitions. Word has length 35 [2020-11-29 20:28:21,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:28:21,128 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 162 transitions. [2020-11-29 20:28:21,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 20:28:21,128 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 162 transitions. [2020-11-29 20:28:21,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-11-29 20:28:21,128 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:28:21,128 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:28:21,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-11-29 20:28:21,345 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:28:21,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:28:21,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1249964580, now seen corresponding path program 2 times [2020-11-29 20:28:21,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:28:21,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055417863] [2020-11-29 20:28:21,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:28:21,365 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:28:21,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [587707398] [2020-11-29 20:28:21,366 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c45c8fe-1f41-4850-92a8-1e5d216404c1/bin/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:28:21,471 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 20:28:21,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 20:28:21,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 20:28:21,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:28:21,531 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:28:21,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055417863] [2020-11-29 20:28:21,531 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:28:21,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587707398] [2020-11-29 20:28:21,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 20:28:21,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-29 20:28:21,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507171972] [2020-11-29 20:28:21,532 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 20:28:21,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:28:21,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 20:28:21,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-29 20:28:21,533 INFO L87 Difference]: Start difference. First operand 138 states and 162 transitions. Second operand 7 states. [2020-11-29 20:28:21,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:28:21,590 INFO L93 Difference]: Finished difference Result 206 states and 244 transitions. [2020-11-29 20:28:21,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 20:28:21,591 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-11-29 20:28:21,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:28:21,592 INFO L225 Difference]: With dead ends: 206 [2020-11-29 20:28:21,592 INFO L226 Difference]: Without dead ends: 142 [2020-11-29 20:28:21,592 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-29 20:28:21,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-11-29 20:28:21,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2020-11-29 20:28:21,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-11-29 20:28:21,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 166 transitions. [2020-11-29 20:28:21,604 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 166 transitions. Word has length 38 [2020-11-29 20:28:21,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:28:21,604 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 166 transitions. [2020-11-29 20:28:21,604 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 20:28:21,604 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 166 transitions. [2020-11-29 20:28:21,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-11-29 20:28:21,605 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:28:21,605 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:28:21,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-11-29 20:28:21,805 INFO L429 AbstractCegarLoop]: === Iteration 16 === [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]=== [2020-11-29 20:28:21,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:28:21,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1789775885, now seen corresponding path program 1 times [2020-11-29 20:28:21,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:28:21,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316354185] [2020-11-29 20:28:21,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:28:21,813 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:28:21,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [616923744] [2020-11-29 20:28:21,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c45c8fe-1f41-4850-92a8-1e5d216404c1/bin/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:28:21,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:28:21,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 20:28:21,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:28:21,948 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:28:21,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316354185] [2020-11-29 20:28:21,949 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:28:21,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616923744] [2020-11-29 20:28:21,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 20:28:21,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-29 20:28:21,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321694984] [2020-11-29 20:28:21,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 20:28:21,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:28:21,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 20:28:21,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-11-29 20:28:21,950 INFO L87 Difference]: Start difference. First operand 142 states and 166 transitions. Second operand 8 states. [2020-11-29 20:28:22,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:28:22,034 INFO L93 Difference]: Finished difference Result 218 states and 257 transitions. [2020-11-29 20:28:22,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-29 20:28:22,035 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 43 [2020-11-29 20:28:22,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:28:22,036 INFO L225 Difference]: With dead ends: 218 [2020-11-29 20:28:22,036 INFO L226 Difference]: Without dead ends: 154 [2020-11-29 20:28:22,037 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-11-29 20:28:22,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-11-29 20:28:22,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 152. [2020-11-29 20:28:22,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-11-29 20:28:22,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 176 transitions. [2020-11-29 20:28:22,049 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 176 transitions. Word has length 43 [2020-11-29 20:28:22,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:28:22,050 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 176 transitions. [2020-11-29 20:28:22,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 20:28:22,050 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 176 transitions. [2020-11-29 20:28:22,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-11-29 20:28:22,050 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:28:22,051 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:28:22,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:28:22,277 INFO L429 AbstractCegarLoop]: === Iteration 17 === [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]=== [2020-11-29 20:28:22,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:28:22,277 INFO L82 PathProgramCache]: Analyzing trace with hash -1351982982, now seen corresponding path program 3 times [2020-11-29 20:28:22,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:28:22,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598832723] [2020-11-29 20:28:22,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:28:22,283 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:28:22,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1095505617] [2020-11-29 20:28:22,284 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c45c8fe-1f41-4850-92a8-1e5d216404c1/bin/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:28:22,330 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-29 20:28:22,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 20:28:22,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-29 20:28:22,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:28:22,375 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 20:28:22,375 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:28:26,742 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:28:32,904 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-11-29 20:28:32,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598832723] [2020-11-29 20:28:32,904 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:28:32,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095505617] [2020-11-29 20:28:32,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 20:28:32,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-29 20:28:32,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82157876] [2020-11-29 20:28:32,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 20:28:32,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:28:32,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 20:28:32,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=20, Unknown=1, NotChecked=0, Total=30 [2020-11-29 20:28:32,906 INFO L87 Difference]: Start difference. First operand 152 states and 176 transitions. Second operand 6 states. [2020-11-29 20:28:39,098 WARN L193 SmtUtils]: Spent 4.12 s on a formula simplification that was a NOOP. DAG size: 17 [2020-11-29 20:28:47,428 WARN L193 SmtUtils]: Spent 8.29 s on a formula simplification. DAG size of input: 26 DAG size of output: 20 [2020-11-29 20:29:23,320 WARN L838 $PredicateComparison]: unable to prove that (and (let ((.cse0 (= c_ULTIMATE.start_main_~b~0 (* c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~y~0)))) (or (and (= 0 c_ULTIMATE.start___VERIFIER_assert_~cond) (not .cse0)) (and (= 1 c_ULTIMATE.start___VERIFIER_assert_~cond) .cse0))) (= (mod c_ULTIMATE.start_main_~a~0 (- 2)) 0) (= c_ULTIMATE.start_main_~b~0 (* 2 (* (div (* c_ULTIMATE.start_main_~a~0 (- 1)) (- 2)) c_ULTIMATE.start_main_~y~0)))) is different from false [2020-11-29 20:29:31,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:29:31,993 INFO L93 Difference]: Finished difference Result 190 states and 215 transitions. [2020-11-29 20:29:31,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 20:29:31,996 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44 [2020-11-29 20:29:31,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:29:31,998 INFO L225 Difference]: With dead ends: 190 [2020-11-29 20:29:31,998 INFO L226 Difference]: Without dead ends: 184 [2020-11-29 20:29:31,999 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 23.2s TimeCoverageRelationStatistics Valid=33, Invalid=56, Unknown=5, NotChecked=16, Total=110 [2020-11-29 20:29:31,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-11-29 20:29:32,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 134. [2020-11-29 20:29:32,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-11-29 20:29:32,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 153 transitions. [2020-11-29 20:29:32,020 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 153 transitions. Word has length 44 [2020-11-29 20:29:32,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:29:32,020 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 153 transitions. [2020-11-29 20:29:32,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 20:29:32,021 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 153 transitions. [2020-11-29 20:29:32,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-11-29 20:29:32,021 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:29:32,022 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:29:32,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-11-29 20:29:32,222 INFO L429 AbstractCegarLoop]: === Iteration 18 === [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]=== [2020-11-29 20:29:32,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:29:32,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1279663409, now seen corresponding path program 2 times [2020-11-29 20:29:32,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:29:32,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708672550] [2020-11-29 20:29:32,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:29:32,247 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:29:32,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1925797142] [2020-11-29 20:29:32,252 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c45c8fe-1f41-4850-92a8-1e5d216404c1/bin/uautomizer/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:29:32,321 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 20:29:32,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 20:29:32,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 20:29:32,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:29:32,414 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:29:32,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708672550] [2020-11-29 20:29:32,415 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:29:32,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925797142] [2020-11-29 20:29:32,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 20:29:32,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-29 20:29:32,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961967836] [2020-11-29 20:29:32,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 20:29:32,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:29:32,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 20:29:32,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-11-29 20:29:32,417 INFO L87 Difference]: Start difference. First operand 134 states and 153 transitions. Second operand 8 states. [2020-11-29 20:29:32,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:29:32,545 INFO L93 Difference]: Finished difference Result 141 states and 160 transitions. [2020-11-29 20:29:32,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 20:29:32,546 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 44 [2020-11-29 20:29:32,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:29:32,549 INFO L225 Difference]: With dead ends: 141 [2020-11-29 20:29:32,549 INFO L226 Difference]: Without dead ends: 137 [2020-11-29 20:29:32,549 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-11-29 20:29:32,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-11-29 20:29:32,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2020-11-29 20:29:32,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-11-29 20:29:32,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 156 transitions. [2020-11-29 20:29:32,569 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 156 transitions. Word has length 44 [2020-11-29 20:29:32,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:29:32,570 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 156 transitions. [2020-11-29 20:29:32,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 20:29:32,570 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 156 transitions. [2020-11-29 20:29:32,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-29 20:29:32,570 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:29:32,571 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:29:32,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-11-29 20:29:32,785 INFO L429 AbstractCegarLoop]: === Iteration 19 === [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]=== [2020-11-29 20:29:32,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:29:32,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1013967437, now seen corresponding path program 2 times [2020-11-29 20:29:32,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:29:32,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611705448] [2020-11-29 20:29:32,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:29:32,792 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:29:32,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [413318929] [2020-11-29 20:29:32,793 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c45c8fe-1f41-4850-92a8-1e5d216404c1/bin/uautomizer/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:29:32,852 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 20:29:32,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 20:29:32,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-29 20:29:32,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:29:32,880 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 20:29:32,881 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:29:33,393 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:29:33,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611705448] [2020-11-29 20:29:33,394 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:29:33,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413318929] [2020-11-29 20:29:33,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 20:29:33,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-11-29 20:29:33,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742997355] [2020-11-29 20:29:33,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 20:29:33,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:29:33,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 20:29:33,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-11-29 20:29:33,396 INFO L87 Difference]: Start difference. First operand 137 states and 156 transitions. Second operand 10 states. [2020-11-29 20:29:34,026 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 20 [2020-11-29 20:29:34,292 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2020-11-29 20:29:34,540 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 20 [2020-11-29 20:29:34,827 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2020-11-29 20:29:35,290 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 16 [2020-11-29 20:29:35,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:29:35,723 INFO L93 Difference]: Finished difference Result 199 states and 230 transitions. [2020-11-29 20:29:35,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-29 20:29:35,725 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 45 [2020-11-29 20:29:35,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:29:35,727 INFO L225 Difference]: With dead ends: 199 [2020-11-29 20:29:35,727 INFO L226 Difference]: Without dead ends: 191 [2020-11-29 20:29:35,728 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=125, Invalid=337, Unknown=0, NotChecked=0, Total=462 [2020-11-29 20:29:35,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-11-29 20:29:35,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 143. [2020-11-29 20:29:35,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-11-29 20:29:35,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 163 transitions. [2020-11-29 20:29:35,750 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 163 transitions. Word has length 45 [2020-11-29 20:29:35,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:29:35,750 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 163 transitions. [2020-11-29 20:29:35,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 20:29:35,750 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 163 transitions. [2020-11-29 20:29:35,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-11-29 20:29:35,751 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:29:35,751 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:29:35,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:29:35,973 INFO L429 AbstractCegarLoop]: === Iteration 20 === [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]=== [2020-11-29 20:29:35,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:29:35,973 INFO L82 PathProgramCache]: Analyzing trace with hash -2111494054, now seen corresponding path program 3 times [2020-11-29 20:29:35,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:29:35,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279407034] [2020-11-29 20:29:35,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:29:35,980 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:29:35,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [116139040] [2020-11-29 20:29:35,981 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c45c8fe-1f41-4850-92a8-1e5d216404c1/bin/uautomizer/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:29:36,049 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-29 20:29:36,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 20:29:36,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 32 conjunts are in the unsatisfiable core [2020-11-29 20:29:36,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:29:36,068 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 20:29:36,068 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:29:36,206 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 20:29:36,206 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:29:36,355 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:29:36,357 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 20:29:36,389 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-11-29 20:29:36,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279407034] [2020-11-29 20:29:36,389 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:29:36,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116139040] [2020-11-29 20:29:36,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:29:36,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-11-29 20:29:36,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466237053] [2020-11-29 20:29:36,390 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-29 20:29:36,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:29:36,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-29 20:29:36,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-11-29 20:29:36,391 INFO L87 Difference]: Start difference. First operand 143 states and 163 transitions. Second operand 11 states. [2020-11-29 20:29:37,502 WARN L193 SmtUtils]: Spent 619.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2020-11-29 20:29:38,410 WARN L193 SmtUtils]: Spent 621.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 21 [2020-11-29 20:29:38,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:29:38,633 INFO L93 Difference]: Finished difference Result 212 states and 246 transitions. [2020-11-29 20:29:38,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-29 20:29:38,634 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 49 [2020-11-29 20:29:38,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:29:38,635 INFO L225 Difference]: With dead ends: 212 [2020-11-29 20:29:38,636 INFO L226 Difference]: Without dead ends: 150 [2020-11-29 20:29:38,638 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2020-11-29 20:29:38,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-11-29 20:29:38,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 143. [2020-11-29 20:29:38,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-11-29 20:29:38,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 161 transitions. [2020-11-29 20:29:38,666 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 161 transitions. Word has length 49 [2020-11-29 20:29:38,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:29:38,666 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 161 transitions. [2020-11-29 20:29:38,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-29 20:29:38,667 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 161 transitions. [2020-11-29 20:29:38,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-11-29 20:29:38,667 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:29:38,667 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:29:38,888 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:29:38,889 INFO L429 AbstractCegarLoop]: === Iteration 21 === [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]=== [2020-11-29 20:29:38,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:29:38,889 INFO L82 PathProgramCache]: Analyzing trace with hash -721749736, now seen corresponding path program 2 times [2020-11-29 20:29:38,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:29:38,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771659459] [2020-11-29 20:29:38,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:29:38,901 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:29:38,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [298481911] [2020-11-29 20:29:38,904 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c45c8fe-1f41-4850-92a8-1e5d216404c1/bin/uautomizer/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:29:38,981 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 20:29:38,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 20:29:38,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-29 20:29:38,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:29:39,101 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 5 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:29:39,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771659459] [2020-11-29 20:29:39,102 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:29:39,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298481911] [2020-11-29 20:29:39,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 20:29:39,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-11-29 20:29:39,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383189631] [2020-11-29 20:29:39,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 20:29:39,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:29:39,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 20:29:39,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-11-29 20:29:39,105 INFO L87 Difference]: Start difference. First operand 143 states and 161 transitions. Second operand 9 states. [2020-11-29 20:29:39,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:29:39,331 INFO L93 Difference]: Finished difference Result 218 states and 249 transitions. [2020-11-29 20:29:39,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-29 20:29:39,333 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 53 [2020-11-29 20:29:39,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:29:39,334 INFO L225 Difference]: With dead ends: 218 [2020-11-29 20:29:39,334 INFO L226 Difference]: Without dead ends: 165 [2020-11-29 20:29:39,335 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2020-11-29 20:29:39,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-11-29 20:29:39,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 163. [2020-11-29 20:29:39,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-11-29 20:29:39,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 181 transitions. [2020-11-29 20:29:39,358 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 181 transitions. Word has length 53 [2020-11-29 20:29:39,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:29:39,358 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 181 transitions. [2020-11-29 20:29:39,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 20:29:39,358 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 181 transitions. [2020-11-29 20:29:39,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-11-29 20:29:39,359 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:29:39,359 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:29:39,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:29:39,560 INFO L429 AbstractCegarLoop]: === Iteration 22 === [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]=== [2020-11-29 20:29:39,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:29:39,560 INFO L82 PathProgramCache]: Analyzing trace with hash 731780486, now seen corresponding path program 4 times [2020-11-29 20:29:39,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:29:39,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392142159] [2020-11-29 20:29:39,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:29:39,565 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:29:39,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1171500690] [2020-11-29 20:29:39,565 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c45c8fe-1f41-4850-92a8-1e5d216404c1/bin/uautomizer/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:29:39,616 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 20:29:39,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 20:29:39,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 42 conjunts are in the unsatisfiable core [2020-11-29 20:29:39,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:29:40,774 WARN L193 SmtUtils]: Spent 770.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2020-11-29 20:29:40,776 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 20:29:40,776 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:29:41,901 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-11-29 20:29:42,545 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-11-29 20:29:44,471 WARN L193 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 35 DAG size of output: 27 [2020-11-29 20:29:44,973 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-11-29 20:29:45,612 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2020-11-29 20:29:48,935 WARN L193 SmtUtils]: Spent 1.72 s on a formula simplification. DAG size of input: 39 DAG size of output: 32 [2020-11-29 20:29:49,660 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 29 [2020-11-29 20:29:50,801 WARN L193 SmtUtils]: Spent 468.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-11-29 20:29:50,830 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:29:50,848 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:29:50,860 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:29:51,504 WARN L193 SmtUtils]: Spent 623.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2020-11-29 20:29:51,693 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:29:51,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392142159] [2020-11-29 20:29:51,694 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:29:51,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171500690] [2020-11-29 20:29:51,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 20:29:51,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-11-29 20:29:51,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274208693] [2020-11-29 20:29:51,695 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-29 20:29:51,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:29:51,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-29 20:29:51,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2020-11-29 20:29:51,696 INFO L87 Difference]: Start difference. First operand 163 states and 181 transitions. Second operand 15 states. [2020-11-29 20:29:55,943 WARN L193 SmtUtils]: Spent 696.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 20 [2020-11-29 20:29:58,093 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2020-11-29 20:30:01,952 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2020-11-29 20:30:03,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:30:03,890 INFO L93 Difference]: Finished difference Result 229 states and 259 transitions. [2020-11-29 20:30:03,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-29 20:30:03,897 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 54 [2020-11-29 20:30:03,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:30:03,898 INFO L225 Difference]: With dead ends: 229 [2020-11-29 20:30:03,898 INFO L226 Difference]: Without dead ends: 220 [2020-11-29 20:30:03,898 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2020-11-29 20:30:03,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-11-29 20:30:03,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 172. [2020-11-29 20:30:03,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-11-29 20:30:03,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 191 transitions. [2020-11-29 20:30:03,922 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 191 transitions. Word has length 54 [2020-11-29 20:30:03,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:30:03,922 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 191 transitions. [2020-11-29 20:30:03,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-29 20:30:03,923 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 191 transitions. [2020-11-29 20:30:03,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-11-29 20:30:03,923 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:30:03,923 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:30:04,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-11-29 20:30:04,133 INFO L429 AbstractCegarLoop]: === Iteration 23 === [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]=== [2020-11-29 20:30:04,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:30:04,133 INFO L82 PathProgramCache]: Analyzing trace with hash -2096365201, now seen corresponding path program 5 times [2020-11-29 20:30:04,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:30:04,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78180565] [2020-11-29 20:30:04,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:30:04,139 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:30:04,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [22488754] [2020-11-29 20:30:04,140 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c45c8fe-1f41-4850-92a8-1e5d216404c1/bin/uautomizer/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:30:04,183 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-11-29 20:30:04,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 20:30:04,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 20:30:04,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:30:04,584 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 37 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:30:04,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78180565] [2020-11-29 20:30:04,585 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:30:04,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22488754] [2020-11-29 20:30:04,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 20:30:04,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-29 20:30:04,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162375469] [2020-11-29 20:30:04,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 20:30:04,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:30:04,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 20:30:04,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-29 20:30:04,587 INFO L87 Difference]: Start difference. First operand 172 states and 191 transitions. Second operand 7 states. [2020-11-29 20:30:06,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:30:06,454 INFO L93 Difference]: Finished difference Result 312 states and 348 transitions. [2020-11-29 20:30:06,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 20:30:06,457 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 59 [2020-11-29 20:30:06,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:30:06,458 INFO L225 Difference]: With dead ends: 312 [2020-11-29 20:30:06,458 INFO L226 Difference]: Without dead ends: 217 [2020-11-29 20:30:06,459 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-11-29 20:30:06,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-11-29 20:30:06,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 165. [2020-11-29 20:30:06,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-11-29 20:30:06,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 187 transitions. [2020-11-29 20:30:06,483 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 187 transitions. Word has length 59 [2020-11-29 20:30:06,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:30:06,483 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 187 transitions. [2020-11-29 20:30:06,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 20:30:06,484 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 187 transitions. [2020-11-29 20:30:06,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-11-29 20:30:06,484 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:30:06,484 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:30:06,688 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-11-29 20:30:06,689 INFO L429 AbstractCegarLoop]: === Iteration 24 === [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]=== [2020-11-29 20:30:06,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:30:06,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1988325277, now seen corresponding path program 3 times [2020-11-29 20:30:06,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:30:06,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687745366] [2020-11-29 20:30:06,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:30:06,704 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:30:06,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [932687478] [2020-11-29 20:30:06,705 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c45c8fe-1f41-4850-92a8-1e5d216404c1/bin/uautomizer/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:30:06,747 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-29 20:30:06,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 20:30:06,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-29 20:30:06,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:30:06,768 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 20:30:06,768 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:30:06,845 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2020-11-29 20:30:06,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687745366] [2020-11-29 20:30:06,845 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:30:06,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932687478] [2020-11-29 20:30:06,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:30:06,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 20:30:06,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550625904] [2020-11-29 20:30:06,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 20:30:06,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:30:06,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 20:30:06,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-29 20:30:06,847 INFO L87 Difference]: Start difference. First operand 165 states and 187 transitions. Second operand 6 states. [2020-11-29 20:30:11,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:30:11,267 INFO L93 Difference]: Finished difference Result 188 states and 213 transitions. [2020-11-29 20:30:11,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 20:30:11,268 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 63 [2020-11-29 20:30:11,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:30:11,269 INFO L225 Difference]: With dead ends: 188 [2020-11-29 20:30:11,269 INFO L226 Difference]: Without dead ends: 167 [2020-11-29 20:30:11,270 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-11-29 20:30:11,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-11-29 20:30:11,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 124. [2020-11-29 20:30:11,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-11-29 20:30:11,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 134 transitions. [2020-11-29 20:30:11,297 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 134 transitions. Word has length 63 [2020-11-29 20:30:11,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:30:11,297 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 134 transitions. [2020-11-29 20:30:11,297 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 20:30:11,297 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 134 transitions. [2020-11-29 20:30:11,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-11-29 20:30:11,298 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:30:11,298 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:30:11,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:30:11,513 INFO L429 AbstractCegarLoop]: === Iteration 25 === [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]=== [2020-11-29 20:30:11,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:30:11,513 INFO L82 PathProgramCache]: Analyzing trace with hash -1474300883, now seen corresponding path program 4 times [2020-11-29 20:30:11,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:30:11,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708697321] [2020-11-29 20:30:11,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:30:11,521 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:30:11,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1584996069] [2020-11-29 20:30:11,521 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c45c8fe-1f41-4850-92a8-1e5d216404c1/bin/uautomizer/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:30:11,602 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 20:30:11,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 20:30:11,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 46 conjunts are in the unsatisfiable core [2020-11-29 20:30:11,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:30:14,156 WARN L193 SmtUtils]: Spent 1.41 s on a formula simplification that was a NOOP. DAG size: 35 [2020-11-29 20:30:14,158 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 20:30:14,158 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:30:14,824 WARN L193 SmtUtils]: Spent 453.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-11-29 20:30:15,245 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2020-11-29 20:30:15,933 WARN L193 SmtUtils]: Spent 542.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 24 [2020-11-29 20:30:16,782 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-11-29 20:30:17,717 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-11-29 20:30:18,172 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-11-29 20:30:18,180 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:30:18,184 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:30:18,187 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:30:18,460 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 15 [2020-11-29 20:30:18,563 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-11-29 20:30:18,904 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:30:18,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708697321] [2020-11-29 20:30:18,904 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:30:18,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584996069] [2020-11-29 20:30:18,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 20:30:18,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-11-29 20:30:18,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758829443] [2020-11-29 20:30:18,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-29 20:30:18,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:30:18,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-29 20:30:18,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-11-29 20:30:18,906 INFO L87 Difference]: Start difference. First operand 124 states and 134 transitions. Second operand 16 states. [2020-11-29 20:30:30,301 WARN L193 SmtUtils]: Spent 4.99 s on a formula simplification. DAG size of input: 52 DAG size of output: 39 [2020-11-29 20:30:31,075 WARN L193 SmtUtils]: Spent 660.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 34 [2020-11-29 20:30:32,690 WARN L193 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 40 DAG size of output: 34 [2020-11-29 20:30:35,418 WARN L193 SmtUtils]: Spent 1.92 s on a formula simplification. DAG size of input: 45 DAG size of output: 25 [2020-11-29 20:30:36,859 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-11-29 20:30:41,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:30:41,165 INFO L93 Difference]: Finished difference Result 275 states and 308 transitions. [2020-11-29 20:30:41,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-11-29 20:30:41,166 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 63 [2020-11-29 20:30:41,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:30:41,167 INFO L225 Difference]: With dead ends: 275 [2020-11-29 20:30:41,167 INFO L226 Difference]: Without dead ends: 198 [2020-11-29 20:30:41,168 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 17.8s TimeCoverageRelationStatistics Valid=93, Invalid=507, Unknown=0, NotChecked=0, Total=600 [2020-11-29 20:30:41,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-11-29 20:30:41,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 134. [2020-11-29 20:30:41,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-11-29 20:30:41,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 144 transitions. [2020-11-29 20:30:41,204 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 144 transitions. Word has length 63 [2020-11-29 20:30:41,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:30:41,204 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 144 transitions. [2020-11-29 20:30:41,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-11-29 20:30:41,205 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 144 transitions. [2020-11-29 20:30:41,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-11-29 20:30:41,206 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:30:41,206 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:30:41,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-11-29 20:30:41,425 INFO L429 AbstractCegarLoop]: === Iteration 26 === [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]=== [2020-11-29 20:30:41,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:30:41,425 INFO L82 PathProgramCache]: Analyzing trace with hash 122644379, now seen corresponding path program 6 times [2020-11-29 20:30:41,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:30:41,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986367138] [2020-11-29 20:30:41,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:30:41,431 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:30:41,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [455678328] [2020-11-29 20:30:41,432 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c45c8fe-1f41-4850-92a8-1e5d216404c1/bin/uautomizer/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:30:41,507 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-11-29 20:30:41,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 20:30:41,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 25 conjunts are in the unsatisfiable core [2020-11-29 20:30:41,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:30:41,563 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 20:30:41,563 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:30:41,636 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 20:30:41,637 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:30:41,688 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:30:41,691 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:30:41,733 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 43 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-11-29 20:30:41,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986367138] [2020-11-29 20:30:41,734 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:30:41,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455678328] [2020-11-29 20:30:41,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 20:30:41,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-11-29 20:30:41,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133719509] [2020-11-29 20:30:41,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 20:30:41,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:30:41,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 20:30:41,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-11-29 20:30:41,736 INFO L87 Difference]: Start difference. First operand 134 states and 144 transitions. Second operand 9 states. [2020-11-29 20:30:46,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:30:46,661 INFO L93 Difference]: Finished difference Result 206 states and 225 transitions. [2020-11-29 20:30:46,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-29 20:30:46,664 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-11-29 20:30:46,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:30:46,666 INFO L225 Difference]: With dead ends: 206 [2020-11-29 20:30:46,666 INFO L226 Difference]: Without dead ends: 200 [2020-11-29 20:30:46,666 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-11-29 20:30:46,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-11-29 20:30:46,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 144. [2020-11-29 20:30:46,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-11-29 20:30:46,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 156 transitions. [2020-11-29 20:30:46,697 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 156 transitions. Word has length 64 [2020-11-29 20:30:46,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:30:46,698 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 156 transitions. [2020-11-29 20:30:46,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 20:30:46,698 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 156 transitions. [2020-11-29 20:30:46,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-11-29 20:30:46,699 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:30:46,699 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:30:46,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:30:46,917 INFO L429 AbstractCegarLoop]: === Iteration 27 === [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]=== [2020-11-29 20:30:46,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:30:46,917 INFO L82 PathProgramCache]: Analyzing trace with hash -372809896, now seen corresponding path program 1 times [2020-11-29 20:30:46,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:30:46,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531110212] [2020-11-29 20:30:46,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:30:46,923 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:30:46,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [863067680] [2020-11-29 20:30:46,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c45c8fe-1f41-4850-92a8-1e5d216404c1/bin/uautomizer/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:30:47,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:30:47,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-29 20:30:47,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:30:47,119 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 3 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:30:47,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531110212] [2020-11-29 20:30:47,119 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:30:47,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863067680] [2020-11-29 20:30:47,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 20:30:47,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-11-29 20:30:47,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22168338] [2020-11-29 20:30:47,121 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 20:30:47,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:30:47,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 20:30:47,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-11-29 20:30:47,122 INFO L87 Difference]: Start difference. First operand 144 states and 156 transitions. Second operand 10 states. [2020-11-29 20:30:47,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:30:47,421 INFO L93 Difference]: Finished difference Result 228 states and 251 transitions. [2020-11-29 20:30:47,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-29 20:30:47,422 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 67 [2020-11-29 20:30:47,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:30:47,422 INFO L225 Difference]: With dead ends: 228 [2020-11-29 20:30:47,423 INFO L226 Difference]: Without dead ends: 146 [2020-11-29 20:30:47,423 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210 [2020-11-29 20:30:47,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-11-29 20:30:47,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 144. [2020-11-29 20:30:47,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-11-29 20:30:47,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 156 transitions. [2020-11-29 20:30:47,444 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 156 transitions. Word has length 67 [2020-11-29 20:30:47,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:30:47,444 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 156 transitions. [2020-11-29 20:30:47,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 20:30:47,444 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 156 transitions. [2020-11-29 20:30:47,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-11-29 20:30:47,444 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:30:47,445 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:30:47,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-11-29 20:30:47,645 INFO L429 AbstractCegarLoop]: === Iteration 28 === [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]=== [2020-11-29 20:30:47,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:30:47,645 INFO L82 PathProgramCache]: Analyzing trace with hash -204396104, now seen corresponding path program 5 times [2020-11-29 20:30:47,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:30:47,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696695546] [2020-11-29 20:30:47,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:30:47,656 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:30:47,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [455270861] [2020-11-29 20:30:47,656 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c45c8fe-1f41-4850-92a8-1e5d216404c1/bin/uautomizer/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:30:47,765 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-11-29 20:30:47,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 20:30:47,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-29 20:30:47,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:30:47,885 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 5 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:30:47,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696695546] [2020-11-29 20:30:47,888 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:30:47,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455270861] [2020-11-29 20:30:47,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 20:30:47,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-11-29 20:30:47,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620156599] [2020-11-29 20:30:47,890 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-29 20:30:47,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:30:47,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-29 20:30:47,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-11-29 20:30:47,891 INFO L87 Difference]: Start difference. First operand 144 states and 156 transitions. Second operand 11 states. [2020-11-29 20:30:48,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:30:48,226 INFO L93 Difference]: Finished difference Result 238 states and 262 transitions. [2020-11-29 20:30:48,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-29 20:30:48,230 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 73 [2020-11-29 20:30:48,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:30:48,231 INFO L225 Difference]: With dead ends: 238 [2020-11-29 20:30:48,231 INFO L226 Difference]: Without dead ends: 175 [2020-11-29 20:30:48,232 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=171, Unknown=0, NotChecked=0, Total=272 [2020-11-29 20:30:48,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-11-29 20:30:48,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 173. [2020-11-29 20:30:48,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-11-29 20:30:48,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 186 transitions. [2020-11-29 20:30:48,268 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 186 transitions. Word has length 73 [2020-11-29 20:30:48,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:30:48,269 INFO L481 AbstractCegarLoop]: Abstraction has 173 states and 186 transitions. [2020-11-29 20:30:48,269 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-29 20:30:48,269 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 186 transitions. [2020-11-29 20:30:48,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-11-29 20:30:48,269 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:30:48,269 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:30:48,470 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-11-29 20:30:48,470 INFO L429 AbstractCegarLoop]: === Iteration 29 === [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]=== [2020-11-29 20:30:48,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:30:48,470 INFO L82 PathProgramCache]: Analyzing trace with hash -982821435, now seen corresponding path program 7 times [2020-11-29 20:30:48,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:30:48,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957205821] [2020-11-29 20:30:48,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:30:48,476 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:30:48,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [771203607] [2020-11-29 20:30:48,477 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c45c8fe-1f41-4850-92a8-1e5d216404c1/bin/uautomizer/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:30:48,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:30:48,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 19 conjunts are in the unsatisfiable core [2020-11-29 20:30:48,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:30:48,733 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 0 proven. 143 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:30:48,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957205821] [2020-11-29 20:30:48,734 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:30:48,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771203607] [2020-11-29 20:30:48,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 20:30:48,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-11-29 20:30:48,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768987924] [2020-11-29 20:30:48,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-29 20:30:48,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:30:48,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-29 20:30:48,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-11-29 20:30:48,736 INFO L87 Difference]: Start difference. First operand 173 states and 186 transitions. Second operand 12 states. [2020-11-29 20:30:49,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:30:49,080 INFO L93 Difference]: Finished difference Result 218 states and 233 transitions. [2020-11-29 20:30:49,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-29 20:30:49,081 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 79 [2020-11-29 20:30:49,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:30:49,084 INFO L225 Difference]: With dead ends: 218 [2020-11-29 20:30:49,084 INFO L226 Difference]: Without dead ends: 214 [2020-11-29 20:30:49,086 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=151, Unknown=0, NotChecked=0, Total=240 [2020-11-29 20:30:49,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-11-29 20:30:49,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 182. [2020-11-29 20:30:49,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-11-29 20:30:49,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 196 transitions. [2020-11-29 20:30:49,123 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 196 transitions. Word has length 79 [2020-11-29 20:30:49,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:30:49,124 INFO L481 AbstractCegarLoop]: Abstraction has 182 states and 196 transitions. [2020-11-29 20:30:49,124 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-29 20:30:49,124 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 196 transitions. [2020-11-29 20:30:49,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-11-29 20:30:49,127 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:30:49,127 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-11-29 20:30:49,352 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-11-29 20:30:49,353 INFO L429 AbstractCegarLoop]: === Iteration 30 === [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]=== [2020-11-29 20:30:49,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:30:49,353 INFO L82 PathProgramCache]: Analyzing trace with hash -403585991, now seen corresponding path program 3 times [2020-11-29 20:30:49,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:30:49,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100766682] [2020-11-29 20:30:49,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:30:49,359 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:30:49,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1090048353] [2020-11-29 20:30:49,360 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c45c8fe-1f41-4850-92a8-1e5d216404c1/bin/uautomizer/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:30:49,425 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-29 20:30:49,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 20:30:49,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 23 conjunts are in the unsatisfiable core [2020-11-29 20:30:49,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:30:49,458 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 20:30:49,458 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:30:49,477 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 20:30:49,477 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:30:49,521 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-11-29 20:30:49,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100766682] [2020-11-29 20:30:49,521 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:30:49,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090048353] [2020-11-29 20:30:49,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:30:49,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 20:30:49,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844716779] [2020-11-29 20:30:49,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 20:30:49,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:30:49,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 20:30:49,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-29 20:30:49,523 INFO L87 Difference]: Start difference. First operand 182 states and 196 transitions. Second operand 6 states. [2020-11-29 20:30:56,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:30:56,068 INFO L93 Difference]: Finished difference Result 189 states and 204 transitions. [2020-11-29 20:30:56,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 20:30:56,069 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2020-11-29 20:30:56,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:30:56,070 INFO L225 Difference]: With dead ends: 189 [2020-11-29 20:30:56,070 INFO L226 Difference]: Without dead ends: 181 [2020-11-29 20:30:56,071 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-11-29 20:30:56,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-11-29 20:30:56,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 171. [2020-11-29 20:30:56,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-11-29 20:30:56,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 183 transitions. [2020-11-29 20:30:56,113 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 183 transitions. Word has length 80 [2020-11-29 20:30:56,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:30:56,114 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 183 transitions. [2020-11-29 20:30:56,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 20:30:56,114 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 183 transitions. [2020-11-29 20:30:56,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-11-29 20:30:56,121 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:30:56,121 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:30:56,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:30:56,345 INFO L429 AbstractCegarLoop]: === Iteration 31 === [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]=== [2020-11-29 20:30:56,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:30:56,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1198599555, now seen corresponding path program 6 times [2020-11-29 20:30:56,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:30:56,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500944355] [2020-11-29 20:30:56,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:30:56,358 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:30:56,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2086903260] [2020-11-29 20:30:56,369 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c45c8fe-1f41-4850-92a8-1e5d216404c1/bin/uautomizer/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:30:56,466 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2020-11-29 20:30:56,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 20:30:56,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 41 conjunts are in the unsatisfiable core [2020-11-29 20:30:56,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:30:56,544 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 20:30:56,544 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:30:56,871 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 0 proven. 109 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-11-29 20:30:56,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500944355] [2020-11-29 20:30:56,871 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:30:56,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086903260] [2020-11-29 20:30:56,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 20:30:56,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-11-29 20:30:56,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185683517] [2020-11-29 20:30:56,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-29 20:30:56,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:30:56,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-29 20:30:56,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-11-29 20:30:56,873 INFO L87 Difference]: Start difference. First operand 171 states and 183 transitions. Second operand 11 states. [2020-11-29 20:30:57,309 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 19 [2020-11-29 20:30:57,689 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 16 [2020-11-29 20:30:58,628 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 17 [2020-11-29 20:31:11,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:31:11,905 INFO L93 Difference]: Finished difference Result 203 states and 216 transitions. [2020-11-29 20:31:11,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-11-29 20:31:11,906 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 83 [2020-11-29 20:31:11,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:31:11,907 INFO L225 Difference]: With dead ends: 203 [2020-11-29 20:31:11,907 INFO L226 Difference]: Without dead ends: 195 [2020-11-29 20:31:11,908 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 71 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2020-11-29 20:31:11,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-11-29 20:31:11,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 162. [2020-11-29 20:31:11,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-11-29 20:31:11,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 173 transitions. [2020-11-29 20:31:11,951 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 173 transitions. Word has length 83 [2020-11-29 20:31:11,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:31:11,951 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 173 transitions. [2020-11-29 20:31:11,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-29 20:31:11,951 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 173 transitions. [2020-11-29 20:31:11,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-11-29 20:31:11,952 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:31:11,953 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:31:12,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2020-11-29 20:31:12,157 INFO L429 AbstractCegarLoop]: === Iteration 32 === [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]=== [2020-11-29 20:31:12,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:31:12,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1544954675, now seen corresponding path program 7 times [2020-11-29 20:31:12,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:31:12,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003013010] [2020-11-29 20:31:12,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:31:12,164 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:31:12,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [309047539] [2020-11-29 20:31:12,164 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c45c8fe-1f41-4850-92a8-1e5d216404c1/bin/uautomizer/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:31:12,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:31:12,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 19 conjunts are in the unsatisfiable core [2020-11-29 20:31:12,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:31:12,368 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 5 proven. 158 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:31:12,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003013010] [2020-11-29 20:31:12,368 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:31:12,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309047539] [2020-11-29 20:31:12,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 20:31:12,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-11-29 20:31:12,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7888389] [2020-11-29 20:31:12,369 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-29 20:31:12,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:31:12,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-29 20:31:12,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-11-29 20:31:12,370 INFO L87 Difference]: Start difference. First operand 162 states and 173 transitions. Second operand 12 states. [2020-11-29 20:31:12,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:31:12,744 INFO L93 Difference]: Finished difference Result 255 states and 277 transitions. [2020-11-29 20:31:12,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-29 20:31:12,750 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 83 [2020-11-29 20:31:12,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:31:12,751 INFO L225 Difference]: With dead ends: 255 [2020-11-29 20:31:12,751 INFO L226 Difference]: Without dead ends: 203 [2020-11-29 20:31:12,754 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=215, Unknown=0, NotChecked=0, Total=342 [2020-11-29 20:31:12,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-11-29 20:31:12,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 201. [2020-11-29 20:31:12,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-11-29 20:31:12,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 213 transitions. [2020-11-29 20:31:12,817 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 213 transitions. Word has length 83 [2020-11-29 20:31:12,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:31:12,817 INFO L481 AbstractCegarLoop]: Abstraction has 201 states and 213 transitions. [2020-11-29 20:31:12,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-29 20:31:12,817 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 213 transitions. [2020-11-29 20:31:12,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-11-29 20:31:12,818 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:31:12,819 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:31:13,032 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:31:13,033 INFO L429 AbstractCegarLoop]: === Iteration 33 === [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]=== [2020-11-29 20:31:13,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:31:13,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1439999258, now seen corresponding path program 8 times [2020-11-29 20:31:13,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:31:13,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321620228] [2020-11-29 20:31:13,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:31:13,039 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:31:13,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1070323256] [2020-11-29 20:31:13,040 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c45c8fe-1f41-4850-92a8-1e5d216404c1/bin/uautomizer/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:31:13,139 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 20:31:13,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 20:31:13,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-29 20:31:13,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:31:13,299 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 0 proven. 199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:31:13,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321620228] [2020-11-29 20:31:13,300 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:31:13,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070323256] [2020-11-29 20:31:13,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 20:31:13,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-11-29 20:31:13,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056102791] [2020-11-29 20:31:13,301 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-29 20:31:13,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:31:13,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-29 20:31:13,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-11-29 20:31:13,301 INFO L87 Difference]: Start difference. First operand 201 states and 213 transitions. Second operand 13 states. [2020-11-29 20:31:13,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:31:13,659 INFO L93 Difference]: Finished difference Result 255 states and 269 transitions. [2020-11-29 20:31:13,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-11-29 20:31:13,660 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 89 [2020-11-29 20:31:13,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:31:13,662 INFO L225 Difference]: With dead ends: 255 [2020-11-29 20:31:13,662 INFO L226 Difference]: Without dead ends: 251 [2020-11-29 20:31:13,663 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=194, Unknown=0, NotChecked=0, Total=306 [2020-11-29 20:31:13,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-11-29 20:31:13,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 207. [2020-11-29 20:31:13,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-11-29 20:31:13,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 220 transitions. [2020-11-29 20:31:13,711 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 220 transitions. Word has length 89 [2020-11-29 20:31:13,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:31:13,711 INFO L481 AbstractCegarLoop]: Abstraction has 207 states and 220 transitions. [2020-11-29 20:31:13,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-29 20:31:13,711 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 220 transitions. [2020-11-29 20:31:13,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-11-29 20:31:13,712 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:31:13,712 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:31:13,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2020-11-29 20:31:13,929 INFO L429 AbstractCegarLoop]: === Iteration 34 === [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]=== [2020-11-29 20:31:13,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:31:13,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1830206841, now seen corresponding path program 1 times [2020-11-29 20:31:13,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:31:13,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504196455] [2020-11-29 20:31:13,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:31:13,934 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:31:13,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1825783993] [2020-11-29 20:31:13,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c45c8fe-1f41-4850-92a8-1e5d216404c1/bin/uautomizer/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:31:14,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:31:14,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-29 20:31:14,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:31:14,427 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-11-29 20:31:16,113 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-11-29 20:31:17,513 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 37 proven. 188 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:31:17,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504196455] [2020-11-29 20:31:17,513 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:31:17,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825783993] [2020-11-29 20:31:17,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 20:31:17,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-11-29 20:31:17,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656171323] [2020-11-29 20:31:17,514 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-29 20:31:17,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:31:17,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-29 20:31:17,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-11-29 20:31:17,515 INFO L87 Difference]: Start difference. First operand 207 states and 220 transitions. Second operand 11 states. [2020-11-29 20:31:23,103 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2020-11-29 20:31:26,321 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 32 [2020-11-29 20:31:36,040 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 36 [2020-11-29 20:31:41,698 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 39 [2020-11-29 20:31:42,550 WARN L193 SmtUtils]: Spent 557.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2020-11-29 20:31:45,595 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 29 [2020-11-29 20:31:49,491 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-11-29 20:31:50,264 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 31 [2020-11-29 20:31:55,228 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 34 [2020-11-29 20:31:55,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:31:55,913 INFO L93 Difference]: Finished difference Result 383 states and 409 transitions. [2020-11-29 20:31:55,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-29 20:31:55,928 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 92 [2020-11-29 20:31:55,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:31:55,930 INFO L225 Difference]: With dead ends: 383 [2020-11-29 20:31:55,930 INFO L226 Difference]: Without dead ends: 331 [2020-11-29 20:31:55,931 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=99, Invalid=279, Unknown=2, NotChecked=0, Total=380 [2020-11-29 20:31:55,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2020-11-29 20:31:55,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 261. [2020-11-29 20:31:55,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-11-29 20:31:55,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 280 transitions. [2020-11-29 20:31:55,997 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 280 transitions. Word has length 92 [2020-11-29 20:31:55,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:31:55,997 INFO L481 AbstractCegarLoop]: Abstraction has 261 states and 280 transitions. [2020-11-29 20:31:55,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-29 20:31:55,998 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 280 transitions. [2020-11-29 20:31:55,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-11-29 20:31:55,998 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:31:55,998 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:31:56,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-11-29 20:31:56,199 INFO L429 AbstractCegarLoop]: === Iteration 35 === [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]=== [2020-11-29 20:31:56,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:31:56,199 INFO L82 PathProgramCache]: Analyzing trace with hash -1359225128, now seen corresponding path program 8 times [2020-11-29 20:31:56,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:31:56,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071377806] [2020-11-29 20:31:56,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:31:56,204 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:31:56,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1697118271] [2020-11-29 20:31:56,204 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c45c8fe-1f41-4850-92a8-1e5d216404c1/bin/uautomizer/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:31:56,269 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 20:31:56,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 20:31:56,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-29 20:31:56,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:31:56,437 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 5 proven. 218 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:31:56,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071377806] [2020-11-29 20:31:56,438 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:31:56,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697118271] [2020-11-29 20:31:56,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 20:31:56,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-11-29 20:31:56,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650291669] [2020-11-29 20:31:56,439 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-29 20:31:56,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:31:56,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-29 20:31:56,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-11-29 20:31:56,440 INFO L87 Difference]: Start difference. First operand 261 states and 280 transitions. Second operand 13 states. [2020-11-29 20:31:56,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:31:56,966 INFO L93 Difference]: Finished difference Result 410 states and 447 transitions. [2020-11-29 20:31:56,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-11-29 20:31:56,967 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 93 [2020-11-29 20:31:56,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:31:56,968 INFO L225 Difference]: With dead ends: 410 [2020-11-29 20:31:56,968 INFO L226 Difference]: Without dead ends: 304 [2020-11-29 20:31:56,969 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=156, Invalid=264, Unknown=0, NotChecked=0, Total=420 [2020-11-29 20:31:56,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-11-29 20:31:57,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 300. [2020-11-29 20:31:57,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2020-11-29 20:31:57,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 320 transitions. [2020-11-29 20:31:57,050 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 320 transitions. Word has length 93 [2020-11-29 20:31:57,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:31:57,050 INFO L481 AbstractCegarLoop]: Abstraction has 300 states and 320 transitions. [2020-11-29 20:31:57,051 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-29 20:31:57,051 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 320 transitions. [2020-11-29 20:31:57,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-11-29 20:31:57,052 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:31:57,052 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 6, 6, 6, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:31:57,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-11-29 20:31:57,281 INFO L429 AbstractCegarLoop]: === Iteration 36 === [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]=== [2020-11-29 20:31:57,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:31:57,281 INFO L82 PathProgramCache]: Analyzing trace with hash 1572975333, now seen corresponding path program 9 times [2020-11-29 20:31:57,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:31:57,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125287073] [2020-11-29 20:31:57,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:31:57,288 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:31:57,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1197793502] [2020-11-29 20:31:57,288 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c45c8fe-1f41-4850-92a8-1e5d216404c1/bin/uautomizer/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:31:57,357 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-29 20:31:57,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 20:31:57,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 23 conjunts are in the unsatisfiable core [2020-11-29 20:31:57,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:31:57,384 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 20:31:57,384 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:31:57,425 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 20:31:57,425 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:31:57,552 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2020-11-29 20:31:57,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125287073] [2020-11-29 20:31:57,553 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:31:57,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197793502] [2020-11-29 20:31:57,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:31:57,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-29 20:31:57,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599579127] [2020-11-29 20:31:57,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 20:31:57,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:31:57,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 20:31:57,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-29 20:31:57,554 INFO L87 Difference]: Start difference. First operand 300 states and 320 transitions. Second operand 8 states. [2020-11-29 20:32:10,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:32:10,209 INFO L93 Difference]: Finished difference Result 328 states and 349 transitions. [2020-11-29 20:32:10,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 20:32:10,210 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 99 [2020-11-29 20:32:10,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:32:10,212 INFO L225 Difference]: With dead ends: 328 [2020-11-29 20:32:10,212 INFO L226 Difference]: Without dead ends: 324 [2020-11-29 20:32:10,212 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-11-29 20:32:10,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-11-29 20:32:10,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 284. [2020-11-29 20:32:10,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2020-11-29 20:32:10,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 302 transitions. [2020-11-29 20:32:10,283 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 302 transitions. Word has length 99 [2020-11-29 20:32:10,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:32:10,284 INFO L481 AbstractCegarLoop]: Abstraction has 284 states and 302 transitions. [2020-11-29 20:32:10,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 20:32:10,284 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 302 transitions. [2020-11-29 20:32:10,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-11-29 20:32:10,285 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:32:10,285 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 7, 7, 7, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:32:10,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-11-29 20:32:10,491 INFO L429 AbstractCegarLoop]: === Iteration 37 === [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]=== [2020-11-29 20:32:10,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:32:10,491 INFO L82 PathProgramCache]: Analyzing trace with hash -934357042, now seen corresponding path program 2 times [2020-11-29 20:32:10,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:32:10,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620546410] [2020-11-29 20:32:10,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:32:10,498 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:32:10,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1991638549] [2020-11-29 20:32:10,500 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c45c8fe-1f41-4850-92a8-1e5d216404c1/bin/uautomizer/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:32:10,569 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 20:32:10,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 20:32:10,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 20:32:10,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:32:10,595 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2020-11-29 20:32:10,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620546410] [2020-11-29 20:32:10,595 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:32:10,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991638549] [2020-11-29 20:32:10,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:32:10,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 20:32:10,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551284943] [2020-11-29 20:32:10,596 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 20:32:10,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:32:10,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 20:32:10,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:32:10,597 INFO L87 Difference]: Start difference. First operand 284 states and 302 transitions. Second operand 5 states. [2020-11-29 20:32:10,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:32:10,811 INFO L93 Difference]: Finished difference Result 393 states and 424 transitions. [2020-11-29 20:32:10,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 20:32:10,813 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-11-29 20:32:10,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:32:10,814 INFO L225 Difference]: With dead ends: 393 [2020-11-29 20:32:10,815 INFO L226 Difference]: Without dead ends: 281 [2020-11-29 20:32:10,815 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 20:32:10,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2020-11-29 20:32:10,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 247. [2020-11-29 20:32:10,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2020-11-29 20:32:10,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 258 transitions. [2020-11-29 20:32:10,885 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 258 transitions. Word has length 102 [2020-11-29 20:32:10,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:32:10,886 INFO L481 AbstractCegarLoop]: Abstraction has 247 states and 258 transitions. [2020-11-29 20:32:10,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 20:32:10,886 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 258 transitions. [2020-11-29 20:32:10,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-11-29 20:32:10,887 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:32:10,887 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 7, 7, 7, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:32:11,112 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-11-29 20:32:11,113 INFO L429 AbstractCegarLoop]: === Iteration 38 === [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]=== [2020-11-29 20:32:11,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:32:11,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1161359581, now seen corresponding path program 9 times [2020-11-29 20:32:11,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:32:11,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19082001] [2020-11-29 20:32:11,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:32:11,120 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:32:11,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1815708783] [2020-11-29 20:32:11,122 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c45c8fe-1f41-4850-92a8-1e5d216404c1/bin/uautomizer/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:32:11,201 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-29 20:32:11,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 20:32:11,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 38 conjunts are in the unsatisfiable core [2020-11-29 20:32:11,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:32:11,256 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 20:32:11,256 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:32:11,389 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 20:32:11,389 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:32:14,531 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 12 proven. 139 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2020-11-29 20:32:14,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19082001] [2020-11-29 20:32:14,532 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:32:14,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815708783] [2020-11-29 20:32:14,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 20:32:14,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-11-29 20:32:14,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113486644] [2020-11-29 20:32:14,532 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-29 20:32:14,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:32:14,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-29 20:32:14,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=83, Unknown=1, NotChecked=0, Total=110 [2020-11-29 20:32:14,533 INFO L87 Difference]: Start difference. First operand 247 states and 258 transitions. Second operand 11 states. [2020-11-29 20:32:15,195 WARN L193 SmtUtils]: Spent 526.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 24 [2020-11-29 20:32:33,207 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 25 [2020-11-29 20:32:47,695 WARN L838 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~x~0) (= c_ULTIMATE.start_main_~q~0 0) (let ((.cse0 (= c_ULTIMATE.start_main_~b~0 (* c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~y~0)))) (or (and (= 0 c_ULTIMATE.start___VERIFIER_assert_~cond) (not .cse0)) (and (= 1 c_ULTIMATE.start___VERIFIER_assert_~cond) .cse0))) (= (mod c_ULTIMATE.start_main_~a~0 (- 2)) 0) (= c_ULTIMATE.start_main_~b~0 (* 2 (* (div (* c_ULTIMATE.start_main_~a~0 (- 1)) (- 2)) c_ULTIMATE.start_main_~y~0))) (= (+ (* c_ULTIMATE.start_main_~q~0 c_ULTIMATE.start_main_~y~0) c_ULTIMATE.start_main_~r~0) c_ULTIMATE.start_main_~x~0)) is different from false [2020-11-29 20:32:55,743 WARN L193 SmtUtils]: Spent 648.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-11-29 20:33:10,375 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 24 [2020-11-29 20:33:12,438 WARN L838 $PredicateComparison]: unable to prove that (and (let ((.cse0 (= c_ULTIMATE.start_main_~b~0 (* c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~y~0)))) (or (and (= 0 c_ULTIMATE.start___VERIFIER_assert_~cond) (not .cse0)) (and (= 1 c_ULTIMATE.start___VERIFIER_assert_~cond) .cse0))) (= (mod c_ULTIMATE.start_main_~a~0 (- 2)) 0) (= c_ULTIMATE.start_main_~b~0 (* 2 (* (div (* c_ULTIMATE.start_main_~a~0 (- 1)) (- 2)) c_ULTIMATE.start_main_~y~0))) (= (+ (* c_ULTIMATE.start_main_~q~0 c_ULTIMATE.start_main_~y~0) c_ULTIMATE.start_main_~r~0) c_ULTIMATE.start_main_~x~0)) is different from false [2020-11-29 20:33:53,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:33:53,817 INFO L93 Difference]: Finished difference Result 269 states and 282 transitions. [2020-11-29 20:33:53,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-29 20:33:53,818 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 103 [2020-11-29 20:33:53,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:33:53,819 INFO L225 Difference]: With dead ends: 269 [2020-11-29 20:33:53,819 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 20:33:53,820 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 91 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 32.5s TimeCoverageRelationStatistics Valid=132, Invalid=325, Unknown=13, NotChecked=82, Total=552 [2020-11-29 20:33:53,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 20:33:53,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 20:33:53,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 20:33:53,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 20:33:53,828 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 103 [2020-11-29 20:33:53,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:33:53,829 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 20:33:53,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-29 20:33:53,829 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 20:33:53,829 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 20:33:54,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2020-11-29 20:33:54,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 20:33:54,453 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 272 DAG size of output: 231 [2020-11-29 20:33:54,890 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 306 DAG size of output: 239 [2020-11-29 20:33:55,204 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 273 DAG size of output: 239 [2020-11-29 20:33:55,348 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 156 [2020-11-29 20:33:56,400 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 299 DAG size of output: 266 [2020-11-29 20:33:56,669 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 272 DAG size of output: 229 [2020-11-29 20:33:56,847 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 150 [2020-11-29 20:33:57,123 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 208 [2020-11-29 20:35:28,041 WARN L193 SmtUtils]: Spent 1.52 m on a formula simplification. DAG size of input: 228 DAG size of output: 36 [2020-11-29 20:36:03,371 WARN L193 SmtUtils]: Spent 35.33 s on a formula simplification. DAG size of input: 233 DAG size of output: 48 [2020-11-29 20:36:54,280 WARN L193 SmtUtils]: Spent 50.91 s on a formula simplification. DAG size of input: 236 DAG size of output: 35 [2020-11-29 20:37:33,909 WARN L193 SmtUtils]: Spent 39.63 s on a formula simplification. DAG size of input: 153 DAG size of output: 56 [2020-11-29 20:39:10,414 WARN L193 SmtUtils]: Spent 1.61 m on a formula simplification. DAG size of input: 263 DAG size of output: 34 [2020-11-29 20:40:32,049 WARN L193 SmtUtils]: Spent 1.36 m on a formula simplification. DAG size of input: 226 DAG size of output: 34 [2020-11-29 20:40:47,330 WARN L193 SmtUtils]: Spent 15.28 s on a formula simplification. DAG size of input: 148 DAG size of output: 40 [2020-11-29 20:41:52,701 WARN L193 SmtUtils]: Spent 1.09 m on a formula simplification. DAG size of input: 202 DAG size of output: 34 [2020-11-29 20:41:52,705 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-29 20:41:52,705 INFO L274 CegarLoopResult]: For program point L11(lines 11 13) no Hoare annotation was computed. [2020-11-29 20:41:52,705 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-29 20:41:52,705 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 20:41:52,705 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 20:41:52,705 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-11-29 20:41:52,705 INFO L274 CegarLoopResult]: For program point L37-1(lines 37 61) no Hoare annotation was computed. [2020-11-29 20:41:52,706 INFO L270 CegarLoopResult]: At program point L37-3(lines 37 61) the Hoare annotation is: (let ((.cse1 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0))) (and (let ((.cse0 (<= 1 ULTIMATE.start_main_~y~0))) (or (and .cse0 (= ULTIMATE.start_main_~a~0 1) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (and .cse0 (= ULTIMATE.start_main_~b~0 (* (* (div (* ULTIMATE.start_main_~a~0 (- 1)) (- 2)) ULTIMATE.start_main_~y~0) 2)) (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0) (= ULTIMATE.start_main_~b~0 .cse1)))) (= (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0)) (+ .cse1 ULTIMATE.start_main_~x~0)) (= ULTIMATE.start_assume_abort_if_not_~cond 1))) [2020-11-29 20:41:52,706 INFO L274 CegarLoopResult]: For program point L37-4(lines 37 61) no Hoare annotation was computed. [2020-11-29 20:41:52,706 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-29 20:41:52,706 INFO L274 CegarLoopResult]: For program point L46-1(lines 46 58) no Hoare annotation was computed. [2020-11-29 20:41:52,707 INFO L270 CegarLoopResult]: At program point L46-3(lines 46 58) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0)))) (.cse1 (<= 1 ULTIMATE.start_main_~y~0)) (.cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse6 (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0))) (.cse5 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse4 (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~r~0))) (or (and .cse0 (<= 1 ULTIMATE.start_main_~r~0) (= ULTIMATE.start_main_~b~0 (* (* (div (* ULTIMATE.start_main_~a~0 (- 1)) (- 2)) ULTIMATE.start_main_~y~0) 2)) .cse1 .cse2 .cse3 (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0)) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6) (and (<= ~counter~0 4) (= ULTIMATE.start_main_~q~0 2) (< (* 2 ULTIMATE.start_main_~r~0) ULTIMATE.start_main_~x~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse3 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~y~0 2))) .cse6 .cse5 .cse4))) [2020-11-29 20:41:52,707 INFO L274 CegarLoopResult]: For program point L46-4(lines 46 58) no Hoare annotation was computed. [2020-11-29 20:41:52,707 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-29 20:41:52,707 INFO L277 CegarLoopResult]: At program point L64(lines 23 65) the Hoare annotation is: true [2020-11-29 20:41:52,707 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-29 20:41:52,707 INFO L274 CegarLoopResult]: For program point L15(lines 15 18) no Hoare annotation was computed. [2020-11-29 20:41:52,708 INFO L270 CegarLoopResult]: At program point L15-1(lines 14 20) the Hoare annotation is: (let ((.cse3 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0))) (let ((.cse0 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 .cse3))) (.cse2 (<= 1 ULTIMATE.start_main_~y~0)) (.cse1 (= ULTIMATE.start_assume_abort_if_not_~cond 1))) (or (and .cse0 (< ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) .cse1 (<= 0 ULTIMATE.start_main_~r~0)) (and .cse0 .cse2 (<= (+ (div (+ ULTIMATE.start_main_~b~0 (- 1)) 2) 1) ULTIMATE.start_main_~y~0) .cse1 (< (+ (div (+ ULTIMATE.start_main_~r~0 (- 2)) 2) 1) ULTIMATE.start_main_~y~0)) (let ((.cse4 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0))) (and .cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~b~0 .cse3) (+ .cse4 ULTIMATE.start_main_~x~0)) .cse1 (= ULTIMATE.start_main_~b~0 .cse4)))))) [2020-11-29 20:41:52,708 INFO L274 CegarLoopResult]: For program point L15-2(lines 15 18) no Hoare annotation was computed. [2020-11-29 20:41:52,708 INFO L270 CegarLoopResult]: At program point L15-3(lines 41 42) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (<= (+ (div (+ ULTIMATE.start_main_~b~0 (- 1)) 2) 1) ULTIMATE.start_main_~y~0)) (.cse4 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0)))) (.cse5 (<= 1 ULTIMATE.start_main_~y~0)) (.cse6 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse3 (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)))) (or (and (<= ~counter~0 4) (= ULTIMATE.start_main_~b~0 (* (* (div (* ULTIMATE.start_main_~a~0 (- 1)) (- 2)) ULTIMATE.start_main_~y~0) 2)) (= ULTIMATE.start_main_~q~0 2) (< (* 2 ULTIMATE.start_main_~r~0) ULTIMATE.start_main_~x~0) .cse0 .cse1 .cse2 (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~y~0 2))) .cse3 (<= (* 2 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~x~0)) (and .cse4 .cse0 (< ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (<= 0 ULTIMATE.start_main_~r~0) .cse2) (and .cse4 .cse5 .cse6 .cse1 (< (+ (div (+ ULTIMATE.start_main_~r~0 (- 2)) 2) 1) ULTIMATE.start_main_~y~0) .cse2) (and .cse4 .cse5 .cse6 .cse2 .cse3))) [2020-11-29 20:41:52,708 INFO L274 CegarLoopResult]: For program point L15-4(lines 15 18) no Hoare annotation was computed. [2020-11-29 20:41:52,708 INFO L270 CegarLoopResult]: At program point L15-5(lines 14 20) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0)))) (.cse1 (<= 1 ULTIMATE.start_main_~y~0)) (.cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse4 (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)))) (or (and .cse0 (<= 1 ULTIMATE.start_main_~r~0) .cse1 (= ULTIMATE.start_main_~b~0 (* (* (div (* ULTIMATE.start_main_~a~0 (- 1)) (- 2)) ULTIMATE.start_main_~y~0) 2)) .cse2 .cse3 (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0) .cse4) (and .cse0 .cse1 .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~r~0)))) [2020-11-29 20:41:52,709 INFO L274 CegarLoopResult]: For program point L15-6(lines 15 18) no Hoare annotation was computed. [2020-11-29 20:41:52,709 INFO L270 CegarLoopResult]: At program point L15-7(lines 14 20) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0)))) (.cse1 (<= 1 ULTIMATE.start_main_~y~0)) (.cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse4 (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)))) (or (and .cse0 (<= 1 ULTIMATE.start_main_~r~0) .cse1 (= ULTIMATE.start_main_~b~0 (* (* (div (* ULTIMATE.start_main_~a~0 (- 1)) (- 2)) ULTIMATE.start_main_~y~0) 2)) .cse2 .cse3 (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0) .cse4) (and .cse0 .cse1 .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~r~0)))) [2020-11-29 20:41:52,709 INFO L274 CegarLoopResult]: For program point L15-8(lines 15 18) no Hoare annotation was computed. [2020-11-29 20:41:52,709 INFO L270 CegarLoopResult]: At program point L15-9(lines 51 52) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0)))) (.cse1 (<= 1 ULTIMATE.start_main_~y~0)) (.cse2 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse3 (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)))) (or (and (<= 1 ULTIMATE.start_main_~r~0) .cse0 (= ULTIMATE.start_main_~b~0 (* (* (div (* ULTIMATE.start_main_~a~0 (- 1)) (- 2)) ULTIMATE.start_main_~y~0) 2)) .cse1 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse2 (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0) .cse3) (and .cse0 .cse1 (= ULTIMATE.start_main_~a~0 1) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse2 .cse3 (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~r~0)))) [2020-11-29 20:41:52,709 INFO L274 CegarLoopResult]: For program point L15-10(lines 15 18) no Hoare annotation was computed. [2020-11-29 20:41:52,710 INFO L270 CegarLoopResult]: At program point L15-11(lines 14 20) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0)))) (.cse1 (<= 1 ULTIMATE.start_main_~y~0)) (.cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse4 (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)))) (or (and .cse0 (<= 1 ULTIMATE.start_main_~r~0) .cse1 (= ULTIMATE.start_main_~b~0 (* (* (div (* ULTIMATE.start_main_~a~0 (- 1)) (- 2)) ULTIMATE.start_main_~y~0) 2)) .cse2 .cse3 (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0) .cse4) (and .cse0 .cse1 .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~r~0)))) [2020-11-29 20:41:52,710 INFO L274 CegarLoopResult]: For program point L15-12(lines 15 18) no Hoare annotation was computed. [2020-11-29 20:41:52,710 INFO L277 CegarLoopResult]: At program point L15-13(lines 14 20) the Hoare annotation is: true [2020-11-29 20:41:52,710 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 20:41:52,710 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-29 20:41:52,710 INFO L274 CegarLoopResult]: For program point L16(lines 16 17) no Hoare annotation was computed. [2020-11-29 20:41:52,710 INFO L274 CegarLoopResult]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2020-11-29 20:41:52,711 INFO L274 CegarLoopResult]: For program point L16-2(lines 16 17) no Hoare annotation was computed. [2020-11-29 20:41:52,711 INFO L274 CegarLoopResult]: For program point L16-3(lines 16 17) no Hoare annotation was computed. [2020-11-29 20:41:52,711 INFO L274 CegarLoopResult]: For program point L16-4(lines 16 17) no Hoare annotation was computed. [2020-11-29 20:41:52,711 INFO L274 CegarLoopResult]: For program point L16-5(lines 16 17) no Hoare annotation was computed. [2020-11-29 20:41:52,711 INFO L274 CegarLoopResult]: For program point L16-6(lines 16 17) no Hoare annotation was computed. [2020-11-29 20:41:52,711 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 20:41:52,711 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-29 20:41:52,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 08:41:52 BoogieIcfgContainer [2020-11-29 20:41:52,764 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 20:41:52,764 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:41:52,765 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:41:52,765 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:41:52,766 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:28:13" (3/4) ... [2020-11-29 20:41:52,770 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 20:41:52,784 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2020-11-29 20:41:52,785 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 20:41:52,785 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 20:41:52,786 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 20:41:52,839 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_1c45c8fe-1f41-4850-92a8-1e5d216404c1/bin/uautomizer/witness.graphml [2020-11-29 20:41:52,839 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:41:52,840 INFO L168 Benchmark]: Toolchain (without parser) took 820569.30 ms. Allocated memory was 92.3 MB in the beginning and 134.2 MB in the end (delta: 41.9 MB). Free memory was 61.0 MB in the beginning and 100.5 MB in the end (delta: -39.5 MB). Peak memory consumption was 1.6 MB. Max. memory is 16.1 GB. [2020-11-29 20:41:52,841 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 92.3 MB. Free memory was 51.4 MB in the beginning and 51.4 MB in the end (delta: 34.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:41:52,841 INFO L168 Benchmark]: CACSL2BoogieTranslator took 269.39 ms. Allocated memory is still 92.3 MB. Free memory was 60.8 MB in the beginning and 69.2 MB in the end (delta: -8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 20:41:52,842 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.96 ms. Allocated memory is still 92.3 MB. Free memory was 69.2 MB in the beginning and 67.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:41:52,842 INFO L168 Benchmark]: Boogie Preprocessor took 22.28 ms. Allocated memory is still 92.3 MB. Free memory was 67.5 MB in the beginning and 66.4 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:41:52,843 INFO L168 Benchmark]: RCFGBuilder took 504.53 ms. Allocated memory is still 92.3 MB. Free memory was 66.4 MB in the beginning and 50.0 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-29 20:41:52,843 INFO L168 Benchmark]: TraceAbstraction took 819651.44 ms. Allocated memory was 92.3 MB in the beginning and 134.2 MB in the end (delta: 41.9 MB). Free memory was 49.6 MB in the beginning and 103.7 MB in the end (delta: -54.1 MB). Peak memory consumption was 65.6 MB. Max. memory is 16.1 GB. [2020-11-29 20:41:52,844 INFO L168 Benchmark]: Witness Printer took 74.70 ms. Allocated memory is still 134.2 MB. Free memory was 103.7 MB in the beginning and 100.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 20:41:52,846 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 92.3 MB. Free memory was 51.4 MB in the beginning and 51.4 MB in the end (delta: 34.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 269.39 ms. Allocated memory is still 92.3 MB. Free memory was 60.8 MB in the beginning and 69.2 MB in the end (delta: -8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.96 ms. Allocated memory is still 92.3 MB. Free memory was 69.2 MB in the beginning and 67.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.28 ms. Allocated memory is still 92.3 MB. Free memory was 67.5 MB in the beginning and 66.4 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 504.53 ms. Allocated memory is still 92.3 MB. Free memory was 66.4 MB in the beginning and 50.0 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 819651.44 ms. Allocated memory was 92.3 MB in the beginning and 134.2 MB in the end (delta: 41.9 MB). Free memory was 49.6 MB in the beginning and 103.7 MB in the end (delta: -54.1 MB). Peak memory consumption was 65.6 MB. Max. memory is 16.1 GB. * Witness Printer took 74.70 ms. Allocated memory is still 134.2 MB. Free memory was 103.7 MB in the beginning and 100.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 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: (((((((x == r + q * y && 1 <= r) && 1 <= y) && b == a * -1 / -2 * y * 2) && 1 == cond) && cond == 1) && a % -2 == 0) && b == a * y) || ((((((x == r + q * y && 1 <= y) && 1 == cond) && cond == 1) && b == a * y) && b == y) && y <= r) - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: (((((((x == r + q * y && 1 <= r) && b == a * -1 / -2 * y * 2) && 1 <= y) && 1 == cond) && cond == 1) && a % -2 == 0) || ((((((x == r + q * y && 1 <= y) && 1 == cond) && cond == 1) && y <= r) && b == y) && b == a * y)) || ((((((((counter <= 4 && q == 2) && 2 * r < x) && 1 <= cond) && cond == 1) && x == r + y * 2) && b == a * y) && b == y) && y <= r) - InvariantResult [Line: 51]: Loop Invariant Derived loop invariant: (((((((1 <= r && x == r + q * y) && b == a * -1 / -2 * y * 2) && 1 <= y) && 1 <= cond) && cond == 1) && a % -2 == 0) && b == a * y) || ((((((x == r + q * y && 1 <= y) && a == 1) && 1 == cond) && cond == 1) && b == a * y) && y <= r) - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: ((((((((((((counter <= 4 && b == a * -1 / -2 * y * 2) && q == 2) && 2 * r < x) && 1 <= cond) && (b + -1) / 2 + 1 <= y) && cond == 1) && a % -2 == 0) && x == r + y * 2) && b == a * y) && 2 * y <= x) || ((((x == r + q * y && 1 <= cond) && r < y) && 0 <= r) && cond == 1)) || (((((x == r + q * y && 1 <= y) && 1 == cond) && (b + -1) / 2 + 1 <= y) && (r + -2) / 2 + 1 < y) && cond == 1)) || ((((x == r + q * y && 1 <= y) && 1 == cond) && cond == 1) && b == a * y) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: ((((1 <= y && a == 1) && b == y) || (((1 <= y && b == a * -1 / -2 * y * 2) && a % -2 == 0) && b == a * y)) && r + b + q * y == a * y + x) && cond == 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((((x == r + q * y && 1 <= r) && 1 <= y) && b == a * -1 / -2 * y * 2) && 1 == cond) && cond == 1) && a % -2 == 0) && b == a * y) || ((((((x == r + q * y && 1 <= y) && 1 == cond) && cond == 1) && b == a * y) && b == y) && y <= r) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((x == r + q * y && r < y) && cond == 1) && 0 <= r) || ((((x == r + q * y && 1 <= y) && (b + -1) / 2 + 1 <= y) && cond == 1) && (r + -2) / 2 + 1 < y)) || ((((1 <= y && 1 == cond) && r + b + q * y == a * y + x) && cond == 1) && b == a * y) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((((x == r + q * y && 1 <= r) && 1 <= y) && b == a * -1 / -2 * y * 2) && 1 == cond) && cond == 1) && a % -2 == 0) && b == a * y) || ((((((x == r + q * y && 1 <= y) && 1 == cond) && cond == 1) && b == a * y) && 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: 340.8s, OverallIterations: 38, TraceHistogramMax: 9, AutomataDifference: 287.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 478.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1239 SDtfs, 3134 SDslu, 4207 SDs, 0 SdLazy, 3936 SolverSat, 935 SolverUnsat, 69 SolverUnknown, 0 SolverNotchecked, 193.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2102 GetRequests, 1675 SyntacticMatches, 8 SemanticMatches, 419 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 869 ImplicationChecksByTransitivity, 108.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=300occurred in iteration=35, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 38 MinimizatonAttempts, 847 StatesRemovedByMinimization, 29 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 10 PreInvPairs, 177 NumberOfFragments, 650 HoareAnnotationTreeSize, 10 FomulaSimplifications, 643029904998 FormulaSimplificationTreeSizeReduction, 3.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 34211917107 FormulaSimplificationTreeSizeReductionInter, 475.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 41.4s InterpolantComputationTime, 1951 NumberOfCodeBlocks, 1608 NumberOfCodeBlocksAsserted, 66 NumberOfCheckSat, 1913 ConstructedInterpolants, 53 QuantifiedInterpolants, 812692 SizeOfPredicates, 275 NumberOfNonLiveVariables, 6141 ConjunctsInSsa, 658 ConjunctsInUnsatCore, 38 InterpolantComputations, 12 PerfectInterpolantSequences, 1259/2971 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! [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...