./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_unwindbound5.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_cfae1247-b9cb-4329-9482-a2f55f7746db/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_cfae1247-b9cb-4329-9482-a2f55f7746db/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_cfae1247-b9cb-4329-9482-a2f55f7746db/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_cfae1247-b9cb-4329-9482-a2f55f7746db/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_unwindbound5.c -s /tmp/vcloud-vcloud-master/worker/run_dir_cfae1247-b9cb-4329-9482-a2f55f7746db/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_cfae1247-b9cb-4329-9482-a2f55f7746db/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 da2855a3b9d79ea31d743c942a3327e8ed25edbd ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 02:56:49,825 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:56:49,837 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:56:49,906 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:56:49,907 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:56:49,913 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:56:49,916 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:56:49,921 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:56:49,924 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:56:49,930 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:56:49,931 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:56:49,934 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:56:49,934 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:56:49,938 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:56:49,940 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:56:49,943 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:56:49,944 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:56:49,948 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:56:49,952 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:56:49,960 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:56:49,963 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:56:49,964 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:56:49,967 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:56:49,968 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:56:49,978 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:56:49,978 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:56:49,979 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:56:49,981 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:56:49,982 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:56:49,984 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:56:49,984 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:56:49,986 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:56:49,989 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:56:49,990 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:56:49,991 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:56:49,992 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:56:49,993 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:56:49,993 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:56:49,994 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:56:49,995 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:56:49,997 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:56:50,000 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_cfae1247-b9cb-4329-9482-a2f55f7746db/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 02:56:50,043 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:56:50,043 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:56:50,045 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:56:50,045 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:56:50,045 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:56:50,046 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:56:50,046 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 02:56:50,046 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 02:56:50,046 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 02:56:50,047 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:56:50,048 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 02:56:50,048 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 02:56:50,048 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 02:56:50,049 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 02:56:50,049 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 02:56:50,049 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:56:50,049 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 02:56:50,049 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:56:50,050 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:56:50,050 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 02:56:50,050 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 02:56:50,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:56:50,051 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:56:50,051 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 02:56:50,051 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 02:56:50,051 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 02:56:50,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 02:56:50,052 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 02:56:50,052 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:56:50,052 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_cfae1247-b9cb-4329-9482-a2f55f7746db/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_cfae1247-b9cb-4329-9482-a2f55f7746db/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da2855a3b9d79ea31d743c942a3327e8ed25edbd [2020-11-28 02:56:50,396 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:56:50,454 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:56:50,457 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:56:50,458 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:56:50,461 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:56:50,463 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_cfae1247-b9cb-4329-9482-a2f55f7746db/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_unwindbound5.c [2020-11-28 02:56:50,548 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cfae1247-b9cb-4329-9482-a2f55f7746db/bin/uautomizer/data/477258dbc/172ab682525c48e8bf47fbce270aa40c/FLAG93c649cb8 [2020-11-28 02:56:51,122 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:56:51,123 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_cfae1247-b9cb-4329-9482-a2f55f7746db/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_unwindbound5.c [2020-11-28 02:56:51,134 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cfae1247-b9cb-4329-9482-a2f55f7746db/bin/uautomizer/data/477258dbc/172ab682525c48e8bf47fbce270aa40c/FLAG93c649cb8 [2020-11-28 02:56:51,467 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_cfae1247-b9cb-4329-9482-a2f55f7746db/bin/uautomizer/data/477258dbc/172ab682525c48e8bf47fbce270aa40c [2020-11-28 02:56:51,470 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:56:51,472 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 02:56:51,477 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:56:51,477 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:56:51,481 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:56:51,483 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:56:51" (1/1) ... [2020-11-28 02:56:51,485 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a02ebe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:51, skipping insertion in model container [2020-11-28 02:56:51,485 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:56:51" (1/1) ... [2020-11-28 02:56:51,492 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:56:51,513 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:56:51,739 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:56:51,757 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:56:51,779 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:56:51,794 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:56:51,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:51 WrapperNode [2020-11-28 02:56:51,795 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:56:51,796 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 02:56:51,797 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 02:56:51,797 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 02:56:51,805 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:51" (1/1) ... [2020-11-28 02:56:51,812 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:51" (1/1) ... [2020-11-28 02:56:51,836 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 02:56:51,837 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:56:51,837 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:56:51,837 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:56:51,846 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:51" (1/1) ... [2020-11-28 02:56:51,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:51" (1/1) ... [2020-11-28 02:56:51,849 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:51" (1/1) ... [2020-11-28 02:56:51,849 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:51" (1/1) ... [2020-11-28 02:56:51,854 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:51" (1/1) ... [2020-11-28 02:56:51,859 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:51" (1/1) ... [2020-11-28 02:56:51,861 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:51" (1/1) ... [2020-11-28 02:56:51,863 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:56:51,864 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:56:51,864 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:56:51,865 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:56:51,873 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cfae1247-b9cb-4329-9482-a2f55f7746db/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:56:51,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 02:56:51,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 02:56:51,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:56:51,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:56:52,524 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:56:52,524 INFO L298 CfgBuilder]: Removed 31 assume(true) statements. [2020-11-28 02:56:52,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:52 BoogieIcfgContainer [2020-11-28 02:56:52,529 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:56:52,531 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 02:56:52,532 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 02:56:52,536 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 02:56:52,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:56:51" (1/3) ... [2020-11-28 02:56:52,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19e05e53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:56:52, skipping insertion in model container [2020-11-28 02:56:52,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:51" (2/3) ... [2020-11-28 02:56:52,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19e05e53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:56:52, skipping insertion in model container [2020-11-28 02:56:52,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:52" (3/3) ... [2020-11-28 02:56:52,539 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd3-ll_unwindbound5.c [2020-11-28 02:56:52,551 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 02:56:52,556 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-11-28 02:56:52,568 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-11-28 02:56:52,605 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 02:56:52,606 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 02:56:52,606 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 02:56:52,606 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:56:52,606 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:56:52,606 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 02:56:52,606 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:56:52,606 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 02:56:52,622 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-11-28 02:56:52,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 02:56:52,627 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:52,628 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:52,629 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:52,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:52,634 INFO L82 PathProgramCache]: Analyzing trace with hash -1233216625, now seen corresponding path program 1 times [2020-11-28 02:56:52,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:52,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228214971] [2020-11-28 02:56:52,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:52,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:52,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:52,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228214971] [2020-11-28 02:56:52,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:52,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 02:56:52,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902270022] [2020-11-28 02:56:52,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 02:56:52,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:52,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 02:56:52,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 02:56:52,866 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2020-11-28 02:56:52,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:52,893 INFO L93 Difference]: Finished difference Result 77 states and 106 transitions. [2020-11-28 02:56:52,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 02:56:52,895 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-28 02:56:52,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:52,911 INFO L225 Difference]: With dead ends: 77 [2020-11-28 02:56:52,911 INFO L226 Difference]: Without dead ends: 36 [2020-11-28 02:56:52,918 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 02:56:52,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-28 02:56:52,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-11-28 02:56:52,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-28 02:56:52,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2020-11-28 02:56:52,960 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 10 [2020-11-28 02:56:52,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:52,961 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2020-11-28 02:56:52,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 02:56:52,961 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2020-11-28 02:56:52,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 02:56:52,962 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:52,962 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:52,962 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 02:56:52,963 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:52,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:52,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1507355568, now seen corresponding path program 1 times [2020-11-28 02:56:52,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:52,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379574521] [2020-11-28 02:56:52,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:52,997 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 02:56:52,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1865551258] [2020-11-28 02:56:52,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cfae1247-b9cb-4329-9482-a2f55f7746db/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:56:53,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:53,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 02:56:53,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:53,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:53,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379574521] [2020-11-28 02:56:53,185 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 02:56:53,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865551258] [2020-11-28 02:56:53,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:53,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 02:56:53,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731917941] [2020-11-28 02:56:53,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:56:53,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:53,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:56:53,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:56:53,190 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand 4 states. [2020-11-28 02:56:53,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:53,217 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-11-28 02:56:53,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:56:53,218 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-28 02:56:53,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:53,219 INFO L225 Difference]: With dead ends: 42 [2020-11-28 02:56:53,219 INFO L226 Difference]: Without dead ends: 38 [2020-11-28 02:56:53,220 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:56:53,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-11-28 02:56:53,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-11-28 02:56:53,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-11-28 02:56:53,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2020-11-28 02:56:53,231 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 11 [2020-11-28 02:56:53,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:53,232 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2020-11-28 02:56:53,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:56:53,233 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2020-11-28 02:56:53,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 02:56:53,235 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:53,235 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:53,449 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-28 02:56:53,449 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:53,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:53,450 INFO L82 PathProgramCache]: Analyzing trace with hash 515750889, now seen corresponding path program 1 times [2020-11-28 02:56:53,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:53,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407033059] [2020-11-28 02:56:53,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:53,469 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 02:56:53,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2088001411] [2020-11-28 02:56:53,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cfae1247-b9cb-4329-9482-a2f55f7746db/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:56:53,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:53,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 02:56:53,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:53,566 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-28 02:56:53,567 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 02:56:53,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:53,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407033059] [2020-11-28 02:56:53,610 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 02:56:53,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088001411] [2020-11-28 02:56:53,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:53,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 02:56:53,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967075904] [2020-11-28 02:56:53,611 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:56:53,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:53,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:56:53,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:56:53,612 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 5 states. [2020-11-28 02:56:53,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:53,771 INFO L93 Difference]: Finished difference Result 66 states and 75 transitions. [2020-11-28 02:56:53,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 02:56:53,778 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-28 02:56:53,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:53,779 INFO L225 Difference]: With dead ends: 66 [2020-11-28 02:56:53,780 INFO L226 Difference]: Without dead ends: 62 [2020-11-28 02:56:53,780 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:56:53,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-11-28 02:56:53,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 39. [2020-11-28 02:56:53,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-28 02:56:53,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2020-11-28 02:56:53,787 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 12 [2020-11-28 02:56:53,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:53,788 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2020-11-28 02:56:53,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:56:53,788 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2020-11-28 02:56:53,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 02:56:53,789 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:53,789 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:54,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:56:54,017 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:54,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:54,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1270616931, now seen corresponding path program 1 times [2020-11-28 02:56:54,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:54,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340366119] [2020-11-28 02:56:54,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:54,037 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 02:56:54,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [893387442] [2020-11-28 02:56:54,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cfae1247-b9cb-4329-9482-a2f55f7746db/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:56:54,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:54,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-28 02:56:54,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:54,171 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-28 02:56:54,171 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 02:56:54,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:54,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340366119] [2020-11-28 02:56:54,345 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 02:56:54,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893387442] [2020-11-28 02:56:54,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:54,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 02:56:54,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745820254] [2020-11-28 02:56:54,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 02:56:54,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:54,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 02:56:54,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:56:54,348 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand 6 states. [2020-11-28 02:56:54,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:54,580 INFO L93 Difference]: Finished difference Result 62 states and 71 transitions. [2020-11-28 02:56:54,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 02:56:54,581 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-11-28 02:56:54,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:54,583 INFO L225 Difference]: With dead ends: 62 [2020-11-28 02:56:54,583 INFO L226 Difference]: Without dead ends: 60 [2020-11-28 02:56:54,583 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-11-28 02:56:54,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-11-28 02:56:54,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 53. [2020-11-28 02:56:54,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-11-28 02:56:54,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 65 transitions. [2020-11-28 02:56:54,594 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 65 transitions. Word has length 16 [2020-11-28 02:56:54,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:54,595 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 65 transitions. [2020-11-28 02:56:54,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 02:56:54,595 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 65 transitions. [2020-11-28 02:56:54,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 02:56:54,596 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:54,596 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:54,809 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:56:54,809 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:54,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:54,810 INFO L82 PathProgramCache]: Analyzing trace with hash -533984263, now seen corresponding path program 1 times [2020-11-28 02:56:54,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:54,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067328805] [2020-11-28 02:56:54,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:54,827 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 02:56:54,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [333348151] [2020-11-28 02:56:54,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cfae1247-b9cb-4329-9482-a2f55f7746db/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:56:54,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:54,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 02:56:54,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:54,972 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:54,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067328805] [2020-11-28 02:56:54,973 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 02:56:54,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333348151] [2020-11-28 02:56:54,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:54,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:56:54,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716939958] [2020-11-28 02:56:54,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:56:54,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:54,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:56:54,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:56:54,975 INFO L87 Difference]: Start difference. First operand 53 states and 65 transitions. Second operand 5 states. [2020-11-28 02:56:55,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:55,025 INFO L93 Difference]: Finished difference Result 85 states and 103 transitions. [2020-11-28 02:56:55,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 02:56:55,026 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-11-28 02:56:55,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:55,028 INFO L225 Difference]: With dead ends: 85 [2020-11-28 02:56:55,028 INFO L226 Difference]: Without dead ends: 55 [2020-11-28 02:56:55,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:56:55,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-11-28 02:56:55,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-11-28 02:56:55,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-11-28 02:56:55,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 67 transitions. [2020-11-28 02:56:55,041 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 67 transitions. Word has length 17 [2020-11-28 02:56:55,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:55,041 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 67 transitions. [2020-11-28 02:56:55,041 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:56:55,041 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 67 transitions. [2020-11-28 02:56:55,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 02:56:55,042 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:55,042 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:55,243 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:56:55,243 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:55,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:55,244 INFO L82 PathProgramCache]: Analyzing trace with hash -1239576457, now seen corresponding path program 1 times [2020-11-28 02:56:55,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:55,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300006742] [2020-11-28 02:56:55,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:55,277 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 02:56:55,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [537168829] [2020-11-28 02:56:55,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cfae1247-b9cb-4329-9482-a2f55f7746db/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:56:55,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:55,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 02:56:55,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:55,405 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:55,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300006742] [2020-11-28 02:56:55,405 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 02:56:55,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537168829] [2020-11-28 02:56:55,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 02:56:55,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-28 02:56:55,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409383622] [2020-11-28 02:56:55,406 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 02:56:55,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:55,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 02:56:55,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:56:55,407 INFO L87 Difference]: Start difference. First operand 55 states and 67 transitions. Second operand 6 states. [2020-11-28 02:56:55,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:55,460 INFO L93 Difference]: Finished difference Result 64 states and 77 transitions. [2020-11-28 02:56:55,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 02:56:55,461 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-11-28 02:56:55,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:55,462 INFO L225 Difference]: With dead ends: 64 [2020-11-28 02:56:55,462 INFO L226 Difference]: Without dead ends: 60 [2020-11-28 02:56:55,462 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:56:55,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-11-28 02:56:55,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-11-28 02:56:55,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-11-28 02:56:55,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 72 transitions. [2020-11-28 02:56:55,472 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 72 transitions. Word has length 18 [2020-11-28 02:56:55,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:55,472 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 72 transitions. [2020-11-28 02:56:55,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 02:56:55,473 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 72 transitions. [2020-11-28 02:56:55,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 02:56:55,474 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:55,474 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:55,687 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-11-28 02:56:55,687 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:55,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:55,687 INFO L82 PathProgramCache]: Analyzing trace with hash -1291970880, now seen corresponding path program 1 times [2020-11-28 02:56:55,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:55,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831827736] [2020-11-28 02:56:55,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:55,707 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 02:56:55,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2083826341] [2020-11-28 02:56:55,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cfae1247-b9cb-4329-9482-a2f55f7746db/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:56:55,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:55,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-28 02:56:55,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:55,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:55,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831827736] [2020-11-28 02:56:55,812 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 02:56:55,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083826341] [2020-11-28 02:56:55,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:55,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:56:55,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364461865] [2020-11-28 02:56:55,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:56:55,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:55,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:56:55,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:56:55,814 INFO L87 Difference]: Start difference. First operand 59 states and 72 transitions. Second operand 4 states. [2020-11-28 02:56:55,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:55,911 INFO L93 Difference]: Finished difference Result 66 states and 76 transitions. [2020-11-28 02:56:55,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:56:55,911 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-11-28 02:56:55,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:55,912 INFO L225 Difference]: With dead ends: 66 [2020-11-28 02:56:55,913 INFO L226 Difference]: Without dead ends: 64 [2020-11-28 02:56:55,913 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:56:55,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-11-28 02:56:55,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 59. [2020-11-28 02:56:55,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-11-28 02:56:55,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 71 transitions. [2020-11-28 02:56:55,928 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 71 transitions. Word has length 18 [2020-11-28 02:56:55,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:55,929 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 71 transitions. [2020-11-28 02:56:55,930 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:56:55,930 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 71 transitions. [2020-11-28 02:56:55,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 02:56:55,932 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:55,932 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:56,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:56:56,139 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:56,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:56,140 INFO L82 PathProgramCache]: Analyzing trace with hash 226968738, now seen corresponding path program 1 times [2020-11-28 02:56:56,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:56,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048507995] [2020-11-28 02:56:56,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:56,161 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 02:56:56,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [802215397] [2020-11-28 02:56:56,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cfae1247-b9cb-4329-9482-a2f55f7746db/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:56:56,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:56,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-28 02:56:56,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:56,268 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-28 02:56:56,268 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 02:56:56,333 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:56,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048507995] [2020-11-28 02:56:56,334 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 02:56:56,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802215397] [2020-11-28 02:56:56,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 02:56:56,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-28 02:56:56,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123197154] [2020-11-28 02:56:56,335 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 02:56:56,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:56,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 02:56:56,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:56:56,336 INFO L87 Difference]: Start difference. First operand 59 states and 71 transitions. Second operand 7 states. [2020-11-28 02:56:56,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:56,709 INFO L93 Difference]: Finished difference Result 191 states and 227 transitions. [2020-11-28 02:56:56,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-28 02:56:56,710 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-11-28 02:56:56,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:56,712 INFO L225 Difference]: With dead ends: 191 [2020-11-28 02:56:56,712 INFO L226 Difference]: Without dead ends: 187 [2020-11-28 02:56:56,713 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-11-28 02:56:56,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-11-28 02:56:56,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 91. [2020-11-28 02:56:56,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-11-28 02:56:56,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 119 transitions. [2020-11-28 02:56:56,748 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 119 transitions. Word has length 19 [2020-11-28 02:56:56,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:56,750 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 119 transitions. [2020-11-28 02:56:56,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 02:56:56,751 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 119 transitions. [2020-11-28 02:56:56,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-28 02:56:56,752 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:56,752 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:56,957 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:56:56,957 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:56,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:56,958 INFO L82 PathProgramCache]: Analyzing trace with hash -338279005, now seen corresponding path program 1 times [2020-11-28 02:56:56,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:56,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662421478] [2020-11-28 02:56:56,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:56,973 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 02:56:56,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [993608404] [2020-11-28 02:56:56,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cfae1247-b9cb-4329-9482-a2f55f7746db/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:56:57,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:57,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-28 02:56:57,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:57,074 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-28 02:56:57,075 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 02:56:57,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:57,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662421478] [2020-11-28 02:56:57,153 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 02:56:57,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993608404] [2020-11-28 02:56:57,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:57,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-28 02:56:57,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978167508] [2020-11-28 02:56:57,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 02:56:57,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:57,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 02:56:57,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:56:57,155 INFO L87 Difference]: Start difference. First operand 91 states and 119 transitions. Second operand 7 states. [2020-11-28 02:56:57,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:57,426 INFO L93 Difference]: Finished difference Result 111 states and 139 transitions. [2020-11-28 02:56:57,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 02:56:57,426 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-11-28 02:56:57,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:57,427 INFO L225 Difference]: With dead ends: 111 [2020-11-28 02:56:57,427 INFO L226 Difference]: Without dead ends: 109 [2020-11-28 02:56:57,428 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-28 02:56:57,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-11-28 02:56:57,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 101. [2020-11-28 02:56:57,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-11-28 02:56:57,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 132 transitions. [2020-11-28 02:56:57,454 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 132 transitions. Word has length 20 [2020-11-28 02:56:57,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:57,454 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 132 transitions. [2020-11-28 02:56:57,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 02:56:57,455 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 132 transitions. [2020-11-28 02:56:57,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-28 02:56:57,459 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:57,459 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:57,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-11-28 02:56:57,685 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:57,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:57,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1331579206, now seen corresponding path program 1 times [2020-11-28 02:56:57,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:57,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169319665] [2020-11-28 02:56:57,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:57,700 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 02:56:57,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [866249321] [2020-11-28 02:56:57,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cfae1247-b9cb-4329-9482-a2f55f7746db/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:56:57,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:57,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-28 02:56:57,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:57,804 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-28 02:56:57,805 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 02:56:57,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:57,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169319665] [2020-11-28 02:56:57,871 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 02:56:57,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866249321] [2020-11-28 02:56:57,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:57,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-28 02:56:57,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45245800] [2020-11-28 02:56:57,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 02:56:57,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:57,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 02:56:57,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:56:57,874 INFO L87 Difference]: Start difference. First operand 101 states and 132 transitions. Second operand 7 states. [2020-11-28 02:56:58,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:58,263 INFO L93 Difference]: Finished difference Result 162 states and 210 transitions. [2020-11-28 02:56:58,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 02:56:58,264 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2020-11-28 02:56:58,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:58,266 INFO L225 Difference]: With dead ends: 162 [2020-11-28 02:56:58,266 INFO L226 Difference]: Without dead ends: 160 [2020-11-28 02:56:58,266 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2020-11-28 02:56:58,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-11-28 02:56:58,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 119. [2020-11-28 02:56:58,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-11-28 02:56:58,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 153 transitions. [2020-11-28 02:56:58,289 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 153 transitions. Word has length 22 [2020-11-28 02:56:58,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:58,290 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 153 transitions. [2020-11-28 02:56:58,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 02:56:58,291 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 153 transitions. [2020-11-28 02:56:58,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-28 02:56:58,296 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:58,296 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:58,517 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:56:58,517 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:58,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:58,518 INFO L82 PathProgramCache]: Analyzing trace with hash -1657245482, now seen corresponding path program 1 times [2020-11-28 02:56:58,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:58,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889557249] [2020-11-28 02:56:58,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:58,536 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 02:56:58,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2035231852] [2020-11-28 02:56:58,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cfae1247-b9cb-4329-9482-a2f55f7746db/bin/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:56:58,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:58,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-28 02:56:58,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:58,622 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-28 02:56:58,622 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 02:56:58,755 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:58,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889557249] [2020-11-28 02:56:58,755 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 02:56:58,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035231852] [2020-11-28 02:56:58,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 02:56:58,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-11-28 02:56:58,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101800259] [2020-11-28 02:56:58,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-28 02:56:58,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:58,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-28 02:56:58,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-11-28 02:56:58,757 INFO L87 Difference]: Start difference. First operand 119 states and 153 transitions. Second operand 9 states. [2020-11-28 02:56:59,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:59,166 INFO L93 Difference]: Finished difference Result 183 states and 226 transitions. [2020-11-28 02:56:59,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-28 02:56:59,166 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-11-28 02:56:59,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:59,167 INFO L225 Difference]: With dead ends: 183 [2020-11-28 02:56:59,168 INFO L226 Difference]: Without dead ends: 181 [2020-11-28 02:56:59,168 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-11-28 02:56:59,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-11-28 02:56:59,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 155. [2020-11-28 02:56:59,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-11-28 02:56:59,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 207 transitions. [2020-11-28 02:56:59,184 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 207 transitions. Word has length 23 [2020-11-28 02:56:59,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:59,185 INFO L481 AbstractCegarLoop]: Abstraction has 155 states and 207 transitions. [2020-11-28 02:56:59,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-28 02:56:59,185 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 207 transitions. [2020-11-28 02:56:59,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-28 02:56:59,186 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:59,186 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] [2020-11-28 02:56:59,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:56:59,412 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:59,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:59,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1336387389, now seen corresponding path program 1 times [2020-11-28 02:56:59,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:59,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791588108] [2020-11-28 02:56:59,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:59,427 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 02:56:59,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1307240522] [2020-11-28 02:56:59,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cfae1247-b9cb-4329-9482-a2f55f7746db/bin/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:56:59,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:59,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 02:56:59,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:56:59,586 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:56:59,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791588108] [2020-11-28 02:56:59,587 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 02:56:59,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307240522] [2020-11-28 02:56:59,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:56:59,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 02:56:59,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114784233] [2020-11-28 02:56:59,588 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 02:56:59,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:56:59,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 02:56:59,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:56:59,589 INFO L87 Difference]: Start difference. First operand 155 states and 207 transitions. Second operand 6 states. [2020-11-28 02:56:59,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:56:59,657 INFO L93 Difference]: Finished difference Result 226 states and 300 transitions. [2020-11-28 02:56:59,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 02:56:59,658 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-11-28 02:56:59,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:56:59,659 INFO L225 Difference]: With dead ends: 226 [2020-11-28 02:56:59,660 INFO L226 Difference]: Without dead ends: 155 [2020-11-28 02:56:59,663 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:56:59,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-11-28 02:56:59,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2020-11-28 02:56:59,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-11-28 02:56:59,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 206 transitions. [2020-11-28 02:56:59,684 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 206 transitions. Word has length 23 [2020-11-28 02:56:59,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:56:59,685 INFO L481 AbstractCegarLoop]: Abstraction has 155 states and 206 transitions. [2020-11-28 02:56:59,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 02:56:59,685 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 206 transitions. [2020-11-28 02:56:59,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-28 02:56:59,690 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:56:59,690 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:56:59,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-11-28 02:56:59,913 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:56:59,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:56:59,914 INFO L82 PathProgramCache]: Analyzing trace with hash 365432544, now seen corresponding path program 1 times [2020-11-28 02:56:59,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:56:59,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565149663] [2020-11-28 02:56:59,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:56:59,924 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 02:56:59,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [175363196] [2020-11-28 02:56:59,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cfae1247-b9cb-4329-9482-a2f55f7746db/bin/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:56:59,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:56:59,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-28 02:56:59,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:57:00,062 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:00,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565149663] [2020-11-28 02:57:00,063 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 02:57:00,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175363196] [2020-11-28 02:57:00,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 02:57:00,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-28 02:57:00,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647956823] [2020-11-28 02:57:00,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 02:57:00,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:00,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 02:57:00,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:57:00,065 INFO L87 Difference]: Start difference. First operand 155 states and 206 transitions. Second operand 7 states. [2020-11-28 02:57:00,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:00,143 INFO L93 Difference]: Finished difference Result 240 states and 323 transitions. [2020-11-28 02:57:00,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 02:57:00,145 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-11-28 02:57:00,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:00,146 INFO L225 Difference]: With dead ends: 240 [2020-11-28 02:57:00,146 INFO L226 Difference]: Without dead ends: 160 [2020-11-28 02:57:00,149 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-28 02:57:00,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-11-28 02:57:00,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 159. [2020-11-28 02:57:00,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-11-28 02:57:00,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 210 transitions. [2020-11-28 02:57:00,165 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 210 transitions. Word has length 24 [2020-11-28 02:57:00,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:00,167 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 210 transitions. [2020-11-28 02:57:00,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 02:57:00,167 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 210 transitions. [2020-11-28 02:57:00,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-28 02:57:00,173 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:00,173 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:00,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-11-28 02:57:00,389 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:00,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:00,390 INFO L82 PathProgramCache]: Analyzing trace with hash 872540784, now seen corresponding path program 2 times [2020-11-28 02:57:00,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:00,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413773318] [2020-11-28 02:57:00,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:00,414 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 02:57:00,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [580100024] [2020-11-28 02:57:00,416 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cfae1247-b9cb-4329-9482-a2f55f7746db/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 [2020-11-28 02:57:00,500 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 02:57:00,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 02:57:00,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-28 02:57:00,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:57:00,615 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:00,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413773318] [2020-11-28 02:57:00,615 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 02:57:00,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580100024] [2020-11-28 02:57:00,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 02:57:00,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-28 02:57:00,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011207568] [2020-11-28 02:57:00,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 02:57:00,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:00,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 02:57:00,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-11-28 02:57:00,617 INFO L87 Difference]: Start difference. First operand 159 states and 210 transitions. Second operand 8 states. [2020-11-28 02:57:00,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:00,717 INFO L93 Difference]: Finished difference Result 187 states and 242 transitions. [2020-11-28 02:57:00,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-28 02:57:00,718 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-11-28 02:57:00,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:00,720 INFO L225 Difference]: With dead ends: 187 [2020-11-28 02:57:00,720 INFO L226 Difference]: Without dead ends: 183 [2020-11-28 02:57:00,720 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-11-28 02:57:00,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-11-28 02:57:00,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 166. [2020-11-28 02:57:00,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-11-28 02:57:00,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 218 transitions. [2020-11-28 02:57:00,737 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 218 transitions. Word has length 25 [2020-11-28 02:57:00,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:00,737 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 218 transitions. [2020-11-28 02:57:00,738 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 02:57:00,738 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 218 transitions. [2020-11-28 02:57:00,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-28 02:57:00,738 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:00,738 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:00,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-11-28 02:57:00,939 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:00,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:00,939 INFO L82 PathProgramCache]: Analyzing trace with hash 820146361, now seen corresponding path program 1 times [2020-11-28 02:57:00,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:00,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016994365] [2020-11-28 02:57:00,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:00,949 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 02:57:00,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1694102997] [2020-11-28 02:57:00,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cfae1247-b9cb-4329-9482-a2f55f7746db/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 [2020-11-28 02:57:01,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:01,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-28 02:57:01,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:57:01,081 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-28 02:57:01,081 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 02:57:01,184 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:01,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016994365] [2020-11-28 02:57:01,185 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 02:57:01,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694102997] [2020-11-28 02:57:01,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 02:57:01,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-11-28 02:57:01,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259368046] [2020-11-28 02:57:01,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 02:57:01,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:01,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 02:57:01,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-28 02:57:01,186 INFO L87 Difference]: Start difference. First operand 166 states and 218 transitions. Second operand 8 states. [2020-11-28 02:57:01,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:01,731 INFO L93 Difference]: Finished difference Result 180 states and 226 transitions. [2020-11-28 02:57:01,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-28 02:57:01,732 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-11-28 02:57:01,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:01,733 INFO L225 Difference]: With dead ends: 180 [2020-11-28 02:57:01,734 INFO L226 Difference]: Without dead ends: 178 [2020-11-28 02:57:01,734 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-11-28 02:57:01,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-11-28 02:57:01,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 166. [2020-11-28 02:57:01,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-11-28 02:57:01,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 217 transitions. [2020-11-28 02:57:01,751 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 217 transitions. Word has length 25 [2020-11-28 02:57:01,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:01,751 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 217 transitions. [2020-11-28 02:57:01,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 02:57:01,751 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 217 transitions. [2020-11-28 02:57:01,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-28 02:57:01,752 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:01,752 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:01,967 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:57:01,968 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:01,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:01,968 INFO L82 PathProgramCache]: Analyzing trace with hash -2113141412, now seen corresponding path program 1 times [2020-11-28 02:57:01,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:01,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030624964] [2020-11-28 02:57:01,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:01,988 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 02:57:01,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [961472694] [2020-11-28 02:57:01,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cfae1247-b9cb-4329-9482-a2f55f7746db/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 [2020-11-28 02:57:02,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:02,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-28 02:57:02,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:57:02,099 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-28 02:57:02,100 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 02:57:02,159 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:02,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030624964] [2020-11-28 02:57:02,159 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 02:57:02,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961472694] [2020-11-28 02:57:02,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 02:57:02,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-11-28 02:57:02,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66126561] [2020-11-28 02:57:02,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-28 02:57:02,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:02,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-28 02:57:02,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-11-28 02:57:02,161 INFO L87 Difference]: Start difference. First operand 166 states and 217 transitions. Second operand 9 states. [2020-11-28 02:57:02,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:02,565 INFO L93 Difference]: Finished difference Result 264 states and 322 transitions. [2020-11-28 02:57:02,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-28 02:57:02,566 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-11-28 02:57:02,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:02,568 INFO L225 Difference]: With dead ends: 264 [2020-11-28 02:57:02,568 INFO L226 Difference]: Without dead ends: 262 [2020-11-28 02:57:02,569 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2020-11-28 02:57:02,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-11-28 02:57:02,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 189. [2020-11-28 02:57:02,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-11-28 02:57:02,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 250 transitions. [2020-11-28 02:57:02,588 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 250 transitions. Word has length 27 [2020-11-28 02:57:02,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:02,589 INFO L481 AbstractCegarLoop]: Abstraction has 189 states and 250 transitions. [2020-11-28 02:57:02,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-28 02:57:02,590 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 250 transitions. [2020-11-28 02:57:02,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-28 02:57:02,590 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:02,590 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:02,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-11-28 02:57:02,817 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:02,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:02,817 INFO L82 PathProgramCache]: Analyzing trace with hash 790822591, now seen corresponding path program 1 times [2020-11-28 02:57:02,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:02,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875881770] [2020-11-28 02:57:02,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:02,826 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 02:57:02,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1643864547] [2020-11-28 02:57:02,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cfae1247-b9cb-4329-9482-a2f55f7746db/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 [2020-11-28 02:57:02,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:02,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 02:57:02,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:57:02,914 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-28 02:57:02,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875881770] [2020-11-28 02:57:02,914 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 02:57:02,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643864547] [2020-11-28 02:57:02,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:02,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:57:02,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751113579] [2020-11-28 02:57:02,915 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:57:02,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:02,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:57:02,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:57:02,916 INFO L87 Difference]: Start difference. First operand 189 states and 250 transitions. Second operand 4 states. [2020-11-28 02:57:03,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:03,064 INFO L93 Difference]: Finished difference Result 382 states and 527 transitions. [2020-11-28 02:57:03,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 02:57:03,065 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-11-28 02:57:03,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:03,067 INFO L225 Difference]: With dead ends: 382 [2020-11-28 02:57:03,068 INFO L226 Difference]: Without dead ends: 380 [2020-11-28 02:57:03,068 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:57:03,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2020-11-28 02:57:03,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 243. [2020-11-28 02:57:03,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-11-28 02:57:03,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 321 transitions. [2020-11-28 02:57:03,088 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 321 transitions. Word has length 29 [2020-11-28 02:57:03,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:03,089 INFO L481 AbstractCegarLoop]: Abstraction has 243 states and 321 transitions. [2020-11-28 02:57:03,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:57:03,089 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 321 transitions. [2020-11-28 02:57:03,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-28 02:57:03,090 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:03,090 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:03,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-11-28 02:57:03,313 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:03,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:03,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1240831363, now seen corresponding path program 2 times [2020-11-28 02:57:03,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:03,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833824640] [2020-11-28 02:57:03,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:03,338 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 02:57:03,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2007792317] [2020-11-28 02:57:03,338 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cfae1247-b9cb-4329-9482-a2f55f7746db/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 [2020-11-28 02:57:03,396 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 02:57:03,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 02:57:03,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-28 02:57:03,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:57:03,505 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:03,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833824640] [2020-11-28 02:57:03,506 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 02:57:03,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007792317] [2020-11-28 02:57:03,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:03,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-28 02:57:03,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411362121] [2020-11-28 02:57:03,506 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-28 02:57:03,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:03,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-28 02:57:03,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-11-28 02:57:03,507 INFO L87 Difference]: Start difference. First operand 243 states and 321 transitions. Second operand 10 states. [2020-11-28 02:57:03,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:03,603 INFO L93 Difference]: Finished difference Result 412 states and 541 transitions. [2020-11-28 02:57:03,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-28 02:57:03,604 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 30 [2020-11-28 02:57:03,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:03,605 INFO L225 Difference]: With dead ends: 412 [2020-11-28 02:57:03,606 INFO L226 Difference]: Without dead ends: 217 [2020-11-28 02:57:03,610 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2020-11-28 02:57:03,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-11-28 02:57:03,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 161. [2020-11-28 02:57:03,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-11-28 02:57:03,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 199 transitions. [2020-11-28 02:57:03,628 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 199 transitions. Word has length 30 [2020-11-28 02:57:03,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:03,628 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 199 transitions. [2020-11-28 02:57:03,628 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-28 02:57:03,628 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 199 transitions. [2020-11-28 02:57:03,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-28 02:57:03,630 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:03,631 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:03,849 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-11-28 02:57:03,849 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:03,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:03,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1752801508, now seen corresponding path program 1 times [2020-11-28 02:57:03,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:03,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515675641] [2020-11-28 02:57:03,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:03,858 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 02:57:03,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [511496374] [2020-11-28 02:57:03,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cfae1247-b9cb-4329-9482-a2f55f7746db/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 [2020-11-28 02:57:03,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:03,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-28 02:57:03,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:57:03,978 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:03,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515675641] [2020-11-28 02:57:03,978 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 02:57:03,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511496374] [2020-11-28 02:57:03,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 02:57:03,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-28 02:57:03,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357240758] [2020-11-28 02:57:03,979 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 02:57:03,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:03,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 02:57:03,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-11-28 02:57:03,980 INFO L87 Difference]: Start difference. First operand 161 states and 199 transitions. Second operand 8 states. [2020-11-28 02:57:04,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:04,060 INFO L93 Difference]: Finished difference Result 217 states and 271 transitions. [2020-11-28 02:57:04,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-28 02:57:04,061 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2020-11-28 02:57:04,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:04,062 INFO L225 Difference]: With dead ends: 217 [2020-11-28 02:57:04,062 INFO L226 Difference]: Without dead ends: 163 [2020-11-28 02:57:04,063 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-11-28 02:57:04,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-11-28 02:57:04,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 161. [2020-11-28 02:57:04,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-11-28 02:57:04,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 195 transitions. [2020-11-28 02:57:04,078 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 195 transitions. Word has length 30 [2020-11-28 02:57:04,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:04,078 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 195 transitions. [2020-11-28 02:57:04,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 02:57:04,078 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 195 transitions. [2020-11-28 02:57:04,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-28 02:57:04,080 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:04,080 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:04,293 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:57:04,293 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:04,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:04,293 INFO L82 PathProgramCache]: Analyzing trace with hash 389368345, now seen corresponding path program 2 times [2020-11-28 02:57:04,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:04,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638997643] [2020-11-28 02:57:04,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:04,302 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 02:57:04,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1699264028] [2020-11-28 02:57:04,302 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cfae1247-b9cb-4329-9482-a2f55f7746db/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 [2020-11-28 02:57:04,356 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 02:57:04,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 02:57:04,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 02:57:04,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:57:04,426 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-28 02:57:04,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638997643] [2020-11-28 02:57:04,427 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 02:57:04,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699264028] [2020-11-28 02:57:04,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:04,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 02:57:04,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295236166] [2020-11-28 02:57:04,428 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:57:04,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:04,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:57:04,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:57:04,429 INFO L87 Difference]: Start difference. First operand 161 states and 195 transitions. Second operand 5 states. [2020-11-28 02:57:04,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:04,576 INFO L93 Difference]: Finished difference Result 251 states and 311 transitions. [2020-11-28 02:57:04,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 02:57:04,576 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-11-28 02:57:04,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:04,578 INFO L225 Difference]: With dead ends: 251 [2020-11-28 02:57:04,578 INFO L226 Difference]: Without dead ends: 210 [2020-11-28 02:57:04,579 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:57:04,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-11-28 02:57:04,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 178. [2020-11-28 02:57:04,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-11-28 02:57:04,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 219 transitions. [2020-11-28 02:57:04,599 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 219 transitions. Word has length 31 [2020-11-28 02:57:04,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:04,599 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 219 transitions. [2020-11-28 02:57:04,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:57:04,599 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 219 transitions. [2020-11-28 02:57:04,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-28 02:57:04,600 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:04,600 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] [2020-11-28 02:57:04,813 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:57:04,813 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:04,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:04,813 INFO L82 PathProgramCache]: Analyzing trace with hash -1035876869, now seen corresponding path program 1 times [2020-11-28 02:57:04,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:04,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601281275] [2020-11-28 02:57:04,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:04,821 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 02:57:04,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1234777288] [2020-11-28 02:57:04,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cfae1247-b9cb-4329-9482-a2f55f7746db/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 [2020-11-28 02:57:04,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:04,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-28 02:57:04,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:57:04,951 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:04,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601281275] [2020-11-28 02:57:04,951 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 02:57:04,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234777288] [2020-11-28 02:57:04,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 02:57:04,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-28 02:57:04,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796806439] [2020-11-28 02:57:04,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:57:04,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:04,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:57:04,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:57:04,953 INFO L87 Difference]: Start difference. First operand 178 states and 219 transitions. Second operand 5 states. [2020-11-28 02:57:05,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:05,151 INFO L93 Difference]: Finished difference Result 242 states and 301 transitions. [2020-11-28 02:57:05,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 02:57:05,152 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2020-11-28 02:57:05,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:05,154 INFO L225 Difference]: With dead ends: 242 [2020-11-28 02:57:05,154 INFO L226 Difference]: Without dead ends: 240 [2020-11-28 02:57:05,154 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:57:05,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-11-28 02:57:05,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 171. [2020-11-28 02:57:05,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-11-28 02:57:05,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 208 transitions. [2020-11-28 02:57:05,179 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 208 transitions. Word has length 32 [2020-11-28 02:57:05,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:05,179 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 208 transitions. [2020-11-28 02:57:05,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:57:05,179 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 208 transitions. [2020-11-28 02:57:05,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-28 02:57:05,180 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:05,180 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:05,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-11-28 02:57:05,405 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:05,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:05,406 INFO L82 PathProgramCache]: Analyzing trace with hash -559947050, now seen corresponding path program 1 times [2020-11-28 02:57:05,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:05,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990469278] [2020-11-28 02:57:05,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:05,424 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 02:57:05,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1785164384] [2020-11-28 02:57:05,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cfae1247-b9cb-4329-9482-a2f55f7746db/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 [2020-11-28 02:57:05,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:05,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 57 conjunts are in the unsatisfiable core [2020-11-28 02:57:05,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:57:05,865 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:05,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990469278] [2020-11-28 02:57:05,866 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 02:57:05,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785164384] [2020-11-28 02:57:05,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 02:57:05,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-11-28 02:57:05,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723526053] [2020-11-28 02:57:05,867 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-28 02:57:05,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:05,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-28 02:57:05,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-11-28 02:57:05,869 INFO L87 Difference]: Start difference. First operand 171 states and 208 transitions. Second operand 11 states. [2020-11-28 02:57:06,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:06,507 INFO L93 Difference]: Finished difference Result 232 states and 284 transitions. [2020-11-28 02:57:06,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-28 02:57:06,508 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 33 [2020-11-28 02:57:06,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:06,510 INFO L225 Difference]: With dead ends: 232 [2020-11-28 02:57:06,511 INFO L226 Difference]: Without dead ends: 226 [2020-11-28 02:57:06,511 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2020-11-28 02:57:06,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-11-28 02:57:06,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 179. [2020-11-28 02:57:06,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-11-28 02:57:06,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 216 transitions. [2020-11-28 02:57:06,534 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 216 transitions. Word has length 33 [2020-11-28 02:57:06,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:06,534 INFO L481 AbstractCegarLoop]: Abstraction has 179 states and 216 transitions. [2020-11-28 02:57:06,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-28 02:57:06,534 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 216 transitions. [2020-11-28 02:57:06,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-11-28 02:57:06,535 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:06,535 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 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] [2020-11-28 02:57:06,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-11-28 02:57:06,749 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:06,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:06,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1005324756, now seen corresponding path program 1 times [2020-11-28 02:57:06,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:06,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291810926] [2020-11-28 02:57:06,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:06,758 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 02:57:06,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1226240343] [2020-11-28 02:57:06,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cfae1247-b9cb-4329-9482-a2f55f7746db/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 [2020-11-28 02:57:06,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:06,848 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:06,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:06,882 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:06,924 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:57:06,924 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 02:57:07,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:57:07,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:57:07 BoogieIcfgContainer [2020-11-28 02:57:07,202 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 02:57:07,203 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:57:07,203 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:57:07,203 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:57:07,203 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:56:52" (3/4) ... [2020-11-28 02:57:07,205 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 02:57:07,266 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_cfae1247-b9cb-4329-9482-a2f55f7746db/bin/uautomizer/witness.graphml [2020-11-28 02:57:07,266 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:57:07,268 INFO L168 Benchmark]: Toolchain (without parser) took 15794.30 ms. Allocated memory was 81.8 MB in the beginning and 132.1 MB in the end (delta: 50.3 MB). Free memory was 51.3 MB in the beginning and 46.4 MB in the end (delta: 5.0 MB). Peak memory consumption was 53.5 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:07,268 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 81.8 MB. Free memory was 53.0 MB in the beginning and 52.9 MB in the end (delta: 29.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:57:07,269 INFO L168 Benchmark]: CACSL2BoogieTranslator took 318.60 ms. Allocated memory was 81.8 MB in the beginning and 109.1 MB in the end (delta: 27.3 MB). Free memory was 51.1 MB in the beginning and 85.9 MB in the end (delta: -34.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:07,269 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.59 ms. Allocated memory is still 109.1 MB. Free memory was 85.9 MB in the beginning and 84.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:07,270 INFO L168 Benchmark]: Boogie Preprocessor took 26.71 ms. Allocated memory is still 109.1 MB. Free memory was 84.5 MB in the beginning and 83.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:07,270 INFO L168 Benchmark]: RCFGBuilder took 664.74 ms. Allocated memory is still 109.1 MB. Free memory was 83.0 MB in the beginning and 65.7 MB in the end (delta: 17.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:07,271 INFO L168 Benchmark]: TraceAbstraction took 14671.03 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 65.1 MB in the beginning and 50.5 MB in the end (delta: 14.5 MB). Peak memory consumption was 39.3 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:07,271 INFO L168 Benchmark]: Witness Printer took 63.45 ms. Allocated memory is still 132.1 MB. Free memory was 50.5 MB in the beginning and 46.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:07,274 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 81.8 MB. Free memory was 53.0 MB in the beginning and 52.9 MB in the end (delta: 29.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 318.60 ms. Allocated memory was 81.8 MB in the beginning and 109.1 MB in the end (delta: 27.3 MB). Free memory was 51.1 MB in the beginning and 85.9 MB in the end (delta: -34.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.59 ms. Allocated memory is still 109.1 MB. Free memory was 85.9 MB in the beginning and 84.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.71 ms. Allocated memory is still 109.1 MB. Free memory was 84.5 MB in the beginning and 83.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 664.74 ms. Allocated memory is still 109.1 MB. Free memory was 83.0 MB in the beginning and 65.7 MB in the end (delta: 17.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 14671.03 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 65.1 MB in the beginning and 50.5 MB in the end (delta: 14.5 MB). Peak memory consumption was 39.3 MB. Max. memory is 16.1 GB. * Witness Printer took 63.45 ms. Allocated memory is still 132.1 MB. Free memory was 50.5 MB in the beginning and 46.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L18] int counter = 0; VAL [counter=0] [L20] int x, y; [L21] long long a, b, p, q, r, s; [L22] x = __VERIFIER_nondet_int() [L23] y = __VERIFIER_nondet_int() [L8] COND FALSE !(!cond) VAL [counter=0] [L8] COND FALSE !(!cond) VAL [counter=0] [L27] a = x [L28] b = y [L29] p = 1 [L30] q = 0 [L31] r = 0 [L32] s = 1 VAL [counter=0] [L34] EXPR counter++ VAL [counter=1] [L34] COND TRUE counter++<5 [L35] COND FALSE !(!(b != 0)) [L37] long long c, k; [L38] c = a [L39] k = 0 VAL [counter=1] [L41] EXPR counter++ VAL [counter=2] [L41] COND TRUE counter++<5 [L42] COND TRUE !(c >= b) VAL [counter=2] [L63] a = b [L64] b = c [L65] long long temp; [L66] temp = p [L67] p = q [L68] q = temp - q * k [L69] temp = r [L70] r = s [L71] s = temp - s * k VAL [counter=2] [L34] EXPR counter++ VAL [counter=3] [L34] COND TRUE counter++<5 [L35] COND FALSE !(!(b != 0)) [L37] long long c, k; [L38] c = a [L39] k = 0 VAL [counter=3] [L41] EXPR counter++ VAL [counter=4] [L41] COND TRUE counter++<5 [L42] COND FALSE !(!(c >= b)) [L44] long long d, v; [L45] d = 1 [L46] v = b VAL [counter=4] [L48] EXPR counter++ VAL [counter=5] [L48] COND TRUE counter++<5 [L11] COND FALSE !(!(cond)) VAL [counter=5] [L11] COND FALSE !(!(cond)) VAL [counter=5] [L11] COND FALSE !(!(cond)) VAL [counter=5] [L11] COND FALSE !(!(cond)) VAL [counter=5] [L54] COND TRUE !(c >= 2 * v) VAL [counter=5] [L59] c = c - v [L60] k = k + d VAL [counter=5] [L41] EXPR counter++ VAL [counter=6] [L41] COND FALSE !(counter++<5) [L63] a = b [L64] b = c [L65] long long temp; [L66] temp = p [L67] p = q [L68] q = temp - q * k [L69] temp = r [L70] r = s [L71] s = temp - s * k VAL [counter=6] [L34] EXPR counter++ VAL [counter=7] [L34] COND FALSE !(counter++<5) [L11] COND TRUE !(cond) VAL [counter=7] [L4] __assert_fail("0", "egcd3-ll.c", 4, "reach_error") VAL [counter=7] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 40 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 14.5s, OverallIterations: 23, TraceHistogramMax: 4, AutomataDifference: 4.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 900 SDtfs, 2254 SDslu, 2175 SDs, 0 SdLazy, 1419 SolverSat, 209 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 534 GetRequests, 369 SyntacticMatches, 2 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=243occurred in iteration=17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 22 MinimizatonAttempts, 653 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 533 NumberOfCodeBlocks, 533 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 473 ConstructedInterpolants, 0 QuantifiedInterpolants, 66346 SizeOfPredicates, 137 NumberOfNonLiveVariables, 2559 ConjunctsInSsa, 294 ConjunctsInUnsatCore, 22 InterpolantComputations, 12 PerfectInterpolantSequences, 70/130 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 incorrect! Received shutdown request...