./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_948ff708-5a1f-4fe2-9ec1-d57c517f976e/bin/utaipan-tZwUujhuQw/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_948ff708-5a1f-4fe2-9ec1-d57c517f976e/bin/utaipan-tZwUujhuQw/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_948ff708-5a1f-4fe2-9ec1-d57c517f976e/bin/utaipan-tZwUujhuQw/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_948ff708-5a1f-4fe2-9ec1-d57c517f976e/bin/utaipan-tZwUujhuQw/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_948ff708-5a1f-4fe2-9ec1-d57c517f976e/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_948ff708-5a1f-4fe2-9ec1-d57c517f976e/bin/utaipan-tZwUujhuQw --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a74f29702f111ed73ba2cd9dfef16b5785bcb6a565ff8c65e98f4116fd8b0956 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 0.2.1-dev-e943c26 [2021-10-20 06:14:44,938 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-20 06:14:44,942 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-20 06:14:44,994 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-20 06:14:44,996 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-20 06:14:44,998 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-20 06:14:45,002 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-20 06:14:45,010 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-20 06:14:45,015 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-20 06:14:45,017 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-20 06:14:45,019 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-20 06:14:45,023 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-20 06:14:45,024 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-20 06:14:45,034 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-20 06:14:45,037 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-20 06:14:45,040 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-20 06:14:45,043 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-20 06:14:45,047 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-20 06:14:45,054 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-20 06:14:45,063 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-20 06:14:45,071 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-20 06:14:45,073 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-20 06:14:45,075 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-20 06:14:45,079 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-20 06:14:45,083 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-20 06:14:45,086 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-20 06:14:45,087 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-20 06:14:45,090 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-20 06:14:45,091 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-20 06:14:45,093 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-20 06:14:45,094 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-20 06:14:45,096 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-20 06:14:45,098 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-20 06:14:45,100 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-20 06:14:45,102 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-20 06:14:45,102 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-20 06:14:45,103 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-20 06:14:45,104 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-20 06:14:45,104 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-20 06:14:45,106 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-20 06:14:45,107 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-20 06:14:45,108 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_948ff708-5a1f-4fe2-9ec1-d57c517f976e/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-20 06:14:45,168 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-20 06:14:45,170 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-20 06:14:45,173 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-20 06:14:45,173 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-20 06:14:45,174 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-20 06:14:45,174 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-20 06:14:45,174 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-20 06:14:45,175 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-20 06:14:45,175 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-20 06:14:45,175 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-20 06:14:45,177 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-20 06:14:45,177 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-20 06:14:45,177 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-20 06:14:45,178 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-20 06:14:45,178 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-20 06:14:45,179 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-20 06:14:45,179 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-20 06:14:45,180 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-20 06:14:45,180 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-20 06:14:45,180 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-20 06:14:45,180 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-20 06:14:45,181 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-20 06:14:45,181 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-20 06:14:45,181 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-20 06:14:45,182 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-20 06:14:45,182 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-20 06:14:45,182 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-20 06:14:45,182 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-20 06:14:45,183 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-20 06:14:45,183 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-20 06:14:45,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 06:14:45,184 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-20 06:14:45,184 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-20 06:14:45,185 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-20 06:14:45,185 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-20 06:14:45,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-20 06:14:45,185 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-20 06:14:45,186 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-20 06:14:45,186 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-20 06:14:45,186 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_worker_vcloud-master_on_vcloud-master/run_dir_948ff708-5a1f-4fe2-9ec1-d57c517f976e/bin/utaipan-tZwUujhuQw/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_948ff708-5a1f-4fe2-9ec1-d57c517f976e/bin/utaipan-tZwUujhuQw Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a74f29702f111ed73ba2cd9dfef16b5785bcb6a565ff8c65e98f4116fd8b0956 [2021-10-20 06:14:45,540 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-20 06:14:45,573 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-20 06:14:45,576 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-20 06:14:45,578 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-20 06:14:45,579 INFO L275 PluginConnector]: CDTParser initialized [2021-10-20 06:14:45,580 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_948ff708-5a1f-4fe2-9ec1-d57c517f976e/bin/utaipan-tZwUujhuQw/../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound2.c [2021-10-20 06:14:45,662 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_948ff708-5a1f-4fe2-9ec1-d57c517f976e/bin/utaipan-tZwUujhuQw/data/eaf04d5b7/e408d7470c134ba384f7dcd38dd99349/FLAG943873db8 [2021-10-20 06:14:46,286 INFO L306 CDTParser]: Found 1 translation units. [2021-10-20 06:14:46,287 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_948ff708-5a1f-4fe2-9ec1-d57c517f976e/sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound2.c [2021-10-20 06:14:46,300 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_948ff708-5a1f-4fe2-9ec1-d57c517f976e/bin/utaipan-tZwUujhuQw/data/eaf04d5b7/e408d7470c134ba384f7dcd38dd99349/FLAG943873db8 [2021-10-20 06:14:46,618 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_948ff708-5a1f-4fe2-9ec1-d57c517f976e/bin/utaipan-tZwUujhuQw/data/eaf04d5b7/e408d7470c134ba384f7dcd38dd99349 [2021-10-20 06:14:46,621 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-20 06:14:46,623 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-20 06:14:46,628 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-20 06:14:46,629 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-20 06:14:46,634 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-20 06:14:46,635 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:14:46" (1/1) ... [2021-10-20 06:14:46,639 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58f8f64e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:14:46, skipping insertion in model container [2021-10-20 06:14:46,639 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:14:46" (1/1) ... [2021-10-20 06:14:46,648 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-20 06:14:46,681 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-20 06:14:46,911 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_948ff708-5a1f-4fe2-9ec1-d57c517f976e/sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound2.c[538,551] [2021-10-20 06:14:46,933 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 06:14:46,941 INFO L203 MainTranslator]: Completed pre-run [2021-10-20 06:14:46,955 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_948ff708-5a1f-4fe2-9ec1-d57c517f976e/sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound2.c[538,551] [2021-10-20 06:14:46,964 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 06:14:46,977 INFO L208 MainTranslator]: Completed translation [2021-10-20 06:14:46,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:14:46 WrapperNode [2021-10-20 06:14:46,978 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-20 06:14:46,979 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-20 06:14:46,979 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-20 06:14:46,979 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-20 06:14:46,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:14:46" (1/1) ... [2021-10-20 06:14:46,994 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:14:46" (1/1) ... [2021-10-20 06:14:47,022 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-20 06:14:47,023 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-20 06:14:47,024 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-20 06:14:47,024 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-20 06:14:47,034 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:14:46" (1/1) ... [2021-10-20 06:14:47,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:14:46" (1/1) ... [2021-10-20 06:14:47,048 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:14:46" (1/1) ... [2021-10-20 06:14:47,048 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:14:46" (1/1) ... [2021-10-20 06:14:47,053 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:14:46" (1/1) ... [2021-10-20 06:14:47,073 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:14:46" (1/1) ... [2021-10-20 06:14:47,074 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:14:46" (1/1) ... [2021-10-20 06:14:47,077 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-20 06:14:47,078 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-20 06:14:47,079 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-20 06:14:47,079 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-20 06:14:47,080 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:14:46" (1/1) ... [2021-10-20 06:14:47,096 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 06:14:47,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_948ff708-5a1f-4fe2-9ec1-d57c517f976e/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 06:14:47,123 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_948ff708-5a1f-4fe2-9ec1-d57c517f976e/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-20 06:14:47,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_948ff708-5a1f-4fe2-9ec1-d57c517f976e/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-20 06:14:47,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-20 06:14:47,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-20 06:14:47,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-20 06:14:47,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-20 06:14:47,543 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-20 06:14:47,544 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2021-10-20 06:14:47,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:14:47 BoogieIcfgContainer [2021-10-20 06:14:47,547 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-20 06:14:47,549 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-20 06:14:47,550 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-20 06:14:47,569 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-20 06:14:47,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:14:46" (1/3) ... [2021-10-20 06:14:47,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7629a809 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:14:47, skipping insertion in model container [2021-10-20 06:14:47,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:14:46" (2/3) ... [2021-10-20 06:14:47,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7629a809 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:14:47, skipping insertion in model container [2021-10-20 06:14:47,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:14:47" (3/3) ... [2021-10-20 06:14:47,573 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-ll_unwindbound2.c [2021-10-20 06:14:47,579 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-20 06:14:47,580 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-10-20 06:14:47,638 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-20 06:14:47,646 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-20 06:14:47,647 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-10-20 06:14:47,683 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 34 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:14:47,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-20 06:14:47,702 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:14:47,702 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-20 06:14:47,703 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-20 06:14:47,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:14:47,720 INFO L82 PathProgramCache]: Analyzing trace with hash 155587567, now seen corresponding path program 1 times [2021-10-20 06:14:47,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 06:14:47,732 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913092783] [2021-10-20 06:14:47,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:14:47,734 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 06:14:47,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:14:48,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:14:48,098 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 06:14:48,098 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913092783] [2021-10-20 06:14:48,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913092783] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 06:14:48,100 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 06:14:48,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-20 06:14:48,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838776851] [2021-10-20 06:14:48,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-20 06:14:48,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 06:14:48,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-20 06:14:48,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-20 06:14:48,130 INFO L87 Difference]: Start difference. First operand has 35 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 34 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:14:48,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:14:48,311 INFO L93 Difference]: Finished difference Result 92 states and 126 transitions. [2021-10-20 06:14:48,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-20 06:14:48,313 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-20 06:14:48,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:14:48,326 INFO L225 Difference]: With dead ends: 92 [2021-10-20 06:14:48,327 INFO L226 Difference]: Without dead ends: 54 [2021-10-20 06:14:48,336 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 59.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-20 06:14:48,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-10-20 06:14:48,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 31. [2021-10-20 06:14:48,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 25 states have (on average 1.36) internal successors, (34), 30 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:14:48,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2021-10-20 06:14:48,393 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 5 [2021-10-20 06:14:48,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:14:48,394 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2021-10-20 06:14:48,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:14:48,395 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2021-10-20 06:14:48,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-20 06:14:48,396 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:14:48,396 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-20 06:14:48,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-20 06:14:48,397 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-20 06:14:48,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:14:48,404 INFO L82 PathProgramCache]: Analyzing trace with hash -804784526, now seen corresponding path program 1 times [2021-10-20 06:14:48,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 06:14:48,405 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619296227] [2021-10-20 06:14:48,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:14:48,406 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 06:14:48,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:14:48,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:14:48,506 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 06:14:48,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619296227] [2021-10-20 06:14:48,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619296227] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 06:14:48,508 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 06:14:48,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-20 06:14:48,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974153872] [2021-10-20 06:14:48,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-20 06:14:48,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 06:14:48,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-20 06:14:48,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-20 06:14:48,517 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:14:48,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:14:48,563 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2021-10-20 06:14:48,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-20 06:14:48,565 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-20 06:14:48,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:14:48,567 INFO L225 Difference]: With dead ends: 51 [2021-10-20 06:14:48,567 INFO L226 Difference]: Without dead ends: 33 [2021-10-20 06:14:48,569 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.2ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-20 06:14:48,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-10-20 06:14:48,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-10-20 06:14:48,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 27 states have (on average 1.3333333333333333) internal successors, (36), 32 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:14:48,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2021-10-20 06:14:48,581 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 7 [2021-10-20 06:14:48,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:14:48,582 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2021-10-20 06:14:48,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:14:48,583 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2021-10-20 06:14:48,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-20 06:14:48,583 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:14:48,584 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-20 06:14:48,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-20 06:14:48,584 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-20 06:14:48,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:14:48,585 INFO L82 PathProgramCache]: Analyzing trace with hash -804047694, now seen corresponding path program 1 times [2021-10-20 06:14:48,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 06:14:48,586 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210327225] [2021-10-20 06:14:48,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:14:48,587 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 06:14:48,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:14:48,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:14:48,672 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 06:14:48,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210327225] [2021-10-20 06:14:48,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210327225] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 06:14:48,674 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 06:14:48,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-20 06:14:48,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715424832] [2021-10-20 06:14:48,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-20 06:14:48,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 06:14:48,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-20 06:14:48,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-20 06:14:48,681 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:14:48,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:14:48,790 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2021-10-20 06:14:48,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-20 06:14:48,791 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-20 06:14:48,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:14:48,793 INFO L225 Difference]: With dead ends: 51 [2021-10-20 06:14:48,793 INFO L226 Difference]: Without dead ends: 49 [2021-10-20 06:14:48,794 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-20 06:14:48,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-10-20 06:14:48,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 31. [2021-10-20 06:14:48,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 30 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:14:48,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2021-10-20 06:14:48,803 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 7 [2021-10-20 06:14:48,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:14:48,803 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2021-10-20 06:14:48,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:14:48,804 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2021-10-20 06:14:48,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-20 06:14:48,804 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:14:48,804 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 06:14:48,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-20 06:14:48,805 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-20 06:14:48,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:14:48,806 INFO L82 PathProgramCache]: Analyzing trace with hash 404435477, now seen corresponding path program 1 times [2021-10-20 06:14:48,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 06:14:48,807 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975748729] [2021-10-20 06:14:48,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:14:48,807 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 06:14:48,865 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-20 06:14:48,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1347439377] [2021-10-20 06:14:48,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:14:48,870 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 06:14:48,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_948ff708-5a1f-4fe2-9ec1-d57c517f976e/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 06:14:48,873 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_948ff708-5a1f-4fe2-9ec1-d57c517f976e/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-20 06:14:48,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_948ff708-5a1f-4fe2-9ec1-d57c517f976e/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-20 06:14:48,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:14:48,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-20 06:14:48,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 06:14:49,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:14:49,205 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 06:14:49,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:14:49,336 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 06:14:49,336 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975748729] [2021-10-20 06:14:49,337 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-20 06:14:49,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347439377] [2021-10-20 06:14:49,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347439377] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 06:14:49,338 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 06:14:49,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-20 06:14:49,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410925250] [2021-10-20 06:14:49,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-20 06:14:49,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 06:14:49,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-20 06:14:49,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-20 06:14:49,340 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:14:50,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:14:50,541 INFO L93 Difference]: Finished difference Result 88 states and 100 transitions. [2021-10-20 06:14:50,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-20 06:14:50,542 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-20 06:14:50,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:14:50,543 INFO L225 Difference]: With dead ends: 88 [2021-10-20 06:14:50,543 INFO L226 Difference]: Without dead ends: 66 [2021-10-20 06:14:50,544 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 64.0ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-20 06:14:50,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-10-20 06:14:50,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 49. [2021-10-20 06:14:50,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 45 states have (on average 1.288888888888889) internal successors, (58), 48 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:14:50,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 58 transitions. [2021-10-20 06:14:50,557 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 58 transitions. Word has length 9 [2021-10-20 06:14:50,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:14:50,557 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 58 transitions. [2021-10-20 06:14:50,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:14:50,558 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 58 transitions. [2021-10-20 06:14:50,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-20 06:14:50,559 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:14:50,559 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 06:14:50,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_948ff708-5a1f-4fe2-9ec1-d57c517f976e/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-20 06:14:50,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_948ff708-5a1f-4fe2-9ec1-d57c517f976e/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 06:14:50,775 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-20 06:14:50,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:14:50,776 INFO L82 PathProgramCache]: Analyzing trace with hash 1567670847, now seen corresponding path program 1 times [2021-10-20 06:14:50,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 06:14:50,777 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474568324] [2021-10-20 06:14:50,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:14:50,777 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 06:14:50,805 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-20 06:14:50,806 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2137663857] [2021-10-20 06:14:50,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:14:50,806 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 06:14:50,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_948ff708-5a1f-4fe2-9ec1-d57c517f976e/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 06:14:50,807 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_948ff708-5a1f-4fe2-9ec1-d57c517f976e/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-20 06:14:50,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_948ff708-5a1f-4fe2-9ec1-d57c517f976e/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-20 06:14:50,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:14:50,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-20 06:14:50,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 06:14:51,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:14:51,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 06:14:51,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:14:51,450 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 06:14:51,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474568324] [2021-10-20 06:14:51,450 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-20 06:14:51,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137663857] [2021-10-20 06:14:51,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137663857] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 06:14:51,451 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 06:14:51,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-20 06:14:51,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350355914] [2021-10-20 06:14:51,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-20 06:14:51,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 06:14:51,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-20 06:14:51,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-20 06:14:51,455 INFO L87 Difference]: Start difference. First operand 49 states and 58 transitions. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:14:51,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:14:51,882 INFO L93 Difference]: Finished difference Result 63 states and 69 transitions. [2021-10-20 06:14:51,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-20 06:14:51,890 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-20 06:14:51,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:14:51,891 INFO L225 Difference]: With dead ends: 63 [2021-10-20 06:14:51,892 INFO L226 Difference]: Without dead ends: 51 [2021-10-20 06:14:51,893 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 130.1ms TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2021-10-20 06:14:51,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-10-20 06:14:51,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 43. [2021-10-20 06:14:51,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 39 states have (on average 1.2307692307692308) internal successors, (48), 42 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:14:51,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2021-10-20 06:14:51,904 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 13 [2021-10-20 06:14:51,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:14:51,904 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2021-10-20 06:14:51,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:14:51,905 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2021-10-20 06:14:51,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-20 06:14:51,906 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:14:51,906 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 06:14:51,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_948ff708-5a1f-4fe2-9ec1-d57c517f976e/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-20 06:14:52,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_948ff708-5a1f-4fe2-9ec1-d57c517f976e/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 06:14:52,122 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-20 06:14:52,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:14:52,123 INFO L82 PathProgramCache]: Analyzing trace with hash 487859498, now seen corresponding path program 1 times [2021-10-20 06:14:52,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 06:14:52,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680112316] [2021-10-20 06:14:52,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:14:52,124 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 06:14:52,158 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-20 06:14:52,159 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1377702853] [2021-10-20 06:14:52,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:14:52,159 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 06:14:52,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_948ff708-5a1f-4fe2-9ec1-d57c517f976e/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 06:14:52,170 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_948ff708-5a1f-4fe2-9ec1-d57c517f976e/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-20 06:14:52,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_948ff708-5a1f-4fe2-9ec1-d57c517f976e/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-20 06:14:52,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:14:52,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-20 06:14:52,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 06:14:52,370 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:14:52,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 06:14:52,439 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:14:52,440 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 06:14:52,440 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680112316] [2021-10-20 06:14:52,440 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-20 06:14:52,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377702853] [2021-10-20 06:14:52,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377702853] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-20 06:14:52,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [352479785] [2021-10-20 06:14:52,468 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-10-20 06:14:52,468 INFO L166 IcfgInterpreter]: Building call graph [2021-10-20 06:14:52,474 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-20 06:14:52,481 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-20 06:14:52,481 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-20 06:14:52,561 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:52,575 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:52,576 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:52,576 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-20 06:14:52,577 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:52,578 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:52,581 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-20 06:14:52,586 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 165 [2021-10-20 06:14:52,619 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_13|], 21=[|v_#valid_14|]} [2021-10-20 06:14:52,644 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-20 06:14:52,645 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:52,645 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-20 06:14:52,646 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:52,646 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-20 06:14:52,647 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-20 06:14:52,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:52,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:52,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:52,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-20 06:14:52,684 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:52,684 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-20 06:14:52,686 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:52,687 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-20 06:14:52,688 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-20 06:14:52,691 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:52,752 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:52,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:52,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:52,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:52,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:52,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:52,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:52,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:52,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:52,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:52,799 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-10-20 06:14:52,800 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:52,803 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-20 06:14:52,804 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:52,805 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-20 06:14:52,806 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-20 06:14:52,806 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:52,825 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:52,828 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:52,831 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-10-20 06:14:52,832 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-20 06:14:52,833 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:302, output treesize:125 [2021-10-20 06:14:52,854 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:52,859 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 130 [2021-10-20 06:14:52,871 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.0 percent of original size [2021-10-20 06:14:52,877 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 144 [2021-10-20 06:14:52,885 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:52,895 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 148 [2021-10-20 06:14:52,906 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:52,921 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 152 [2021-10-20 06:14:52,938 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:52,949 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 142 [2021-10-20 06:14:52,954 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:52,960 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 147 [2021-10-20 06:14:52,969 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.2 percent of original size [2021-10-20 06:14:52,983 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 153 [2021-10-20 06:14:53,002 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:53,019 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 157 [2021-10-20 06:14:53,026 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:53,039 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 161 [2021-10-20 06:14:53,046 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:53,136 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:53,139 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:53,150 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:53,157 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:53,160 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:53,190 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:53,237 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:53,248 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 151 [2021-10-20 06:14:53,255 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:53,261 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 156 [2021-10-20 06:14:53,274 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:53,293 INFO L185 QuantifierPusher]: treesize reduction 42, result has 67.9 percent of original size 89 [2021-10-20 06:14:53,304 INFO L180 QuantifierPusher]: treesize reduction 42, result has 73.6 percent of original size [2021-10-20 06:14:53,321 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-10-20 06:14:53,331 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:53,339 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 102 [2021-10-20 06:14:53,349 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:53,358 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 149 [2021-10-20 06:14:53,362 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:53,392 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:53,398 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:53,404 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:53,406 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:53,421 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:53,439 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:53,465 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:53,470 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 154 [2021-10-20 06:14:53,474 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:53,507 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:53,510 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:53,513 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:53,515 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:53,528 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:53,544 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:53,567 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:53,591 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:53,593 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:53,595 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:53,597 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:53,603 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:53,618 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:53,640 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:53,664 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:53,666 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:53,668 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:53,670 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:53,675 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:53,690 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:53,715 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:53,728 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:53,730 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:53,733 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-10-20 06:14:53,741 INFO L185 QuantifierPusher]: treesize reduction 42, result has 56.7 percent of original size 55 [2021-10-20 06:14:53,750 INFO L180 QuantifierPusher]: treesize reduction 42, result has 60.4 percent of original size [2021-10-20 06:14:53,753 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-10-20 06:14:53,779 INFO L180 QuantifierPusher]: treesize reduction 4, result has 93.8 percent of original size [2021-10-20 06:14:53,782 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-10-20 06:14:53,788 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:53,793 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-10-20 06:14:53,802 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:53,808 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:53,812 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:53,818 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 147 [2021-10-20 06:14:53,832 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:53,836 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:53,843 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 138 [2021-10-20 06:14:53,846 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 179 [2021-10-20 06:14:53,857 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:53,865 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 183 [2021-10-20 06:14:53,877 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:53,892 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 192 [2021-10-20 06:14:53,895 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-20 06:14:56,461 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-20 06:14:56,462 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-20 06:14:56,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-10-20 06:14:56,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542642685] [2021-10-20 06:14:56,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-20 06:14:56,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 06:14:56,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-20 06:14:56,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2021-10-20 06:14:56,464 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:14:56,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:14:56,514 INFO L93 Difference]: Finished difference Result 71 states and 80 transitions. [2021-10-20 06:14:56,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-20 06:14:56,515 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-20 06:14:56,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:14:56,516 INFO L225 Difference]: With dead ends: 71 [2021-10-20 06:14:56,516 INFO L226 Difference]: Without dead ends: 45 [2021-10-20 06:14:56,517 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 2596.5ms TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2021-10-20 06:14:56,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-10-20 06:14:56,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2021-10-20 06:14:56,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 44 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:14:56,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2021-10-20 06:14:56,535 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 16 [2021-10-20 06:14:56,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:14:56,535 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2021-10-20 06:14:56,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:14:56,536 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2021-10-20 06:14:56,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-20 06:14:56,538 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:14:56,538 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 06:14:56,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_948ff708-5a1f-4fe2-9ec1-d57c517f976e/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-20 06:14:56,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_948ff708-5a1f-4fe2-9ec1-d57c517f976e/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-20 06:14:56,766 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-20 06:14:56,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:14:56,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1352312707, now seen corresponding path program 1 times [2021-10-20 06:14:56,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 06:14:56,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128775859] [2021-10-20 06:14:56,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:14:56,767 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 06:14:56,805 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-20 06:14:56,805 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1702916938] [2021-10-20 06:14:56,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:14:56,806 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 06:14:56,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_948ff708-5a1f-4fe2-9ec1-d57c517f976e/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 06:14:56,807 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_948ff708-5a1f-4fe2-9ec1-d57c517f976e/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-20 06:14:56,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_948ff708-5a1f-4fe2-9ec1-d57c517f976e/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-20 06:14:56,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:14:56,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-20 06:14:56,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 06:14:57,153 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-20 06:14:57,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 06:14:57,399 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-20 06:14:57,399 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 06:14:57,403 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128775859] [2021-10-20 06:14:57,403 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-20 06:14:57,403 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702916938] [2021-10-20 06:14:57,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702916938] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 06:14:57,404 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 06:14:57,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-20 06:14:57,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160484426] [2021-10-20 06:14:57,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-20 06:14:57,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 06:14:57,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-20 06:14:57,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-20 06:14:57,407 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:14:57,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:14:57,509 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2021-10-20 06:14:57,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-20 06:14:57,510 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-20 06:14:57,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:14:57,511 INFO L225 Difference]: With dead ends: 53 [2021-10-20 06:14:57,511 INFO L226 Difference]: Without dead ends: 49 [2021-10-20 06:14:57,512 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 61.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-20 06:14:57,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-10-20 06:14:57,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2021-10-20 06:14:57,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 41 states have (on average 1.1951219512195121) internal successors, (49), 44 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:14:57,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2021-10-20 06:14:57,527 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 22 [2021-10-20 06:14:57,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:14:57,528 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2021-10-20 06:14:57,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:14:57,528 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2021-10-20 06:14:57,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-20 06:14:57,532 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:14:57,532 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 06:14:57,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_948ff708-5a1f-4fe2-9ec1-d57c517f976e/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-20 06:14:57,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_948ff708-5a1f-4fe2-9ec1-d57c517f976e/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 06:14:57,733 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-20 06:14:57,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:14:57,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1802737760, now seen corresponding path program 1 times [2021-10-20 06:14:57,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 06:14:57,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852819547] [2021-10-20 06:14:57,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:14:57,734 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 06:14:57,755 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-20 06:14:57,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1987203090] [2021-10-20 06:14:57,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:14:57,764 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 06:14:57,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_948ff708-5a1f-4fe2-9ec1-d57c517f976e/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 06:14:57,765 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_948ff708-5a1f-4fe2-9ec1-d57c517f976e/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-20 06:14:57,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_948ff708-5a1f-4fe2-9ec1-d57c517f976e/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-20 06:14:57,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-20 06:14:57,912 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-20 06:14:57,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-20 06:14:57,988 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-20 06:14:57,989 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-20 06:14:57,990 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-10-20 06:14:57,992 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-20 06:14:57,994 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-20 06:14:57,994 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-20 06:14:58,002 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-20 06:14:58,002 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-20 06:14:58,002 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-20 06:14:58,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_948ff708-5a1f-4fe2-9ec1-d57c517f976e/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-20 06:14:58,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_948ff708-5a1f-4fe2-9ec1-d57c517f976e/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-10-20 06:14:58,236 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-20 06:14:58,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:14:58 BoogieIcfgContainer [2021-10-20 06:14:58,292 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-20 06:14:58,292 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-20 06:14:58,293 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-20 06:14:58,293 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-20 06:14:58,293 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:14:47" (3/4) ... [2021-10-20 06:14:58,296 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-20 06:14:58,357 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_948ff708-5a1f-4fe2-9ec1-d57c517f976e/bin/utaipan-tZwUujhuQw/witness.graphml [2021-10-20 06:14:58,358 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-20 06:14:58,359 INFO L168 Benchmark]: Toolchain (without parser) took 11735.58 ms. Allocated memory was 127.9 MB in the beginning and 165.7 MB in the end (delta: 37.7 MB). Free memory was 88.9 MB in the beginning and 118.9 MB in the end (delta: -29.9 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. [2021-10-20 06:14:58,359 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 127.9 MB. Free memory was 105.9 MB in the beginning and 105.9 MB in the end (delta: 28.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 06:14:58,360 INFO L168 Benchmark]: CACSL2BoogieTranslator took 350.10 ms. Allocated memory is still 127.9 MB. Free memory was 88.7 MB in the beginning and 102.8 MB in the end (delta: -14.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-20 06:14:58,360 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.52 ms. Allocated memory is still 127.9 MB. Free memory was 102.4 MB in the beginning and 101.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 06:14:58,361 INFO L168 Benchmark]: Boogie Preprocessor took 54.22 ms. Allocated memory is still 127.9 MB. Free memory was 100.7 MB in the beginning and 99.8 MB in the end (delta: 880.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 06:14:58,361 INFO L168 Benchmark]: RCFGBuilder took 469.04 ms. Allocated memory is still 127.9 MB. Free memory was 99.8 MB in the beginning and 85.9 MB in the end (delta: 14.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-20 06:14:58,361 INFO L168 Benchmark]: TraceAbstraction took 10742.50 ms. Allocated memory was 127.9 MB in the beginning and 165.7 MB in the end (delta: 37.7 MB). Free memory was 85.1 MB in the beginning and 122.0 MB in the end (delta: -36.9 MB). Peak memory consumption was 2.3 MB. Max. memory is 16.1 GB. [2021-10-20 06:14:58,362 INFO L168 Benchmark]: Witness Printer took 65.28 ms. Allocated memory is still 165.7 MB. Free memory was 122.0 MB in the beginning and 118.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 06:14:58,365 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 127.9 MB. Free memory was 105.9 MB in the beginning and 105.9 MB in the end (delta: 28.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 350.10 ms. Allocated memory is still 127.9 MB. Free memory was 88.7 MB in the beginning and 102.8 MB in the end (delta: -14.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.52 ms. Allocated memory is still 127.9 MB. Free memory was 102.4 MB in the beginning and 101.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 54.22 ms. Allocated memory is still 127.9 MB. Free memory was 100.7 MB in the beginning and 99.8 MB in the end (delta: 880.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 469.04 ms. Allocated memory is still 127.9 MB. Free memory was 99.8 MB in the beginning and 85.9 MB in the end (delta: 14.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10742.50 ms. Allocated memory was 127.9 MB in the beginning and 165.7 MB in the end (delta: 37.7 MB). Free memory was 85.1 MB in the beginning and 122.0 MB in the end (delta: -36.9 MB). Peak memory consumption was 2.3 MB. Max. memory is 16.1 GB. * Witness Printer took 65.28 ms. Allocated memory is still 165.7 MB. Free memory was 122.0 MB in the beginning and 118.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 17]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; [L24] unsigned int A, B; [L25] long long r, d, p, q; [L26] A = __VERIFIER_nondet_uint() [L27] B = __VERIFIER_nondet_uint() [L12] COND FALSE !(!cond) [L30] r = A [L31] d = B [L32] p = 1 [L33] q = 0 VAL [counter=0] [L35] EXPR counter++ VAL [counter=1] [L35] COND TRUE counter++<2 [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L39] COND FALSE !(!(r >= d)) [L41] d = 2 * d [L42] p = 2 * p VAL [counter=1] [L35] EXPR counter++ VAL [counter=2] [L35] COND TRUE counter++<2 [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L39] COND TRUE !(r >= d) VAL [counter=2] [L45] EXPR counter++ VAL [counter=3] [L45] COND FALSE !(counter++<2) [L15] COND FALSE !(!(cond)) VAL [counter=3] [L15] COND TRUE !(cond) VAL [counter=3] [L17] reach_error() VAL [counter=3] - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 35 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 10598.6ms, OverallIterations: 8, TraceHistogramMax: 2, EmptinessCheckTime: 51.5ms, AutomataDifference: 2195.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 13.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 182 SDtfs, 212 SDslu, 307 SDs, 0 SdLazy, 204 SolverSat, 58 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1622.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 147 GetRequests, 100 SyntacticMatches, 6 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 2956.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred in iteration=4, InterpolantAutomatonStates: 39, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 115.5ms AutomataMinimizationTime, 7 MinimizatonAttempts, 70 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 70.6ms SsaConstructionTime, 249.2ms SatisfiabilityAnalysisTime, 1862.0ms InterpolantComputationTime, 103 NumberOfCodeBlocks, 103 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 128 ConstructedInterpolants, 0 QuantifiedInterpolants, 876 SizeOfPredicates, 17 NumberOfNonLiveVariables, 339 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 11 InterpolantComputations, 9 PerfectInterpolantSequences, 16/20 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! [2021-10-20 06:14:58,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_948ff708-5a1f-4fe2-9ec1-d57c517f976e/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...