./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_2+newton_3_7.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_2+newton_3_7.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 803cbc2ab2fb54f2ccf794a1cf55b1df2243f22f996d0e59d0f49967facf7958 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 18:25:06,197 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:25:06,199 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:25:06,227 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:25:06,228 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:25:06,229 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:25:06,230 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:25:06,240 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:25:06,242 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:25:06,247 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:25:06,248 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:25:06,249 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:25:06,250 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:25:06,251 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:25:06,252 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:25:06,253 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:25:06,254 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:25:06,254 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:25:06,256 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:25:06,258 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:25:06,262 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:25:06,265 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:25:06,269 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:25:06,270 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:25:06,284 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:25:06,285 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:25:06,285 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:25:06,286 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:25:06,286 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:25:06,287 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:25:06,288 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:25:06,289 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:25:06,289 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:25:06,290 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:25:06,291 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:25:06,292 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:25:06,292 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:25:06,293 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:25:06,293 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:25:06,294 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:25:06,295 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:25:06,300 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 18:25:06,336 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:25:06,336 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:25:06,337 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:25:06,337 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:25:06,337 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:25:06,338 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:25:06,338 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:25:06,338 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:25:06,339 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:25:06,339 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:25:06,339 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:25:06,343 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:25:06,343 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:25:06,343 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:25:06,343 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:25:06,343 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:25:06,344 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:25:06,344 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:25:06,344 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:25:06,344 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:25:06,344 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:25:06,344 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:25:06,345 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:25:06,345 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:25:06,345 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:25:06,346 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:25:06,346 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:25:06,346 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:25:06,347 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:25:06,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:25:06,347 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:25:06,347 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:25:06,348 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:25:06,348 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 803cbc2ab2fb54f2ccf794a1cf55b1df2243f22f996d0e59d0f49967facf7958 [2022-11-18 18:25:06,619 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:25:06,667 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:25:06,670 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:25:06,671 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:25:06,672 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:25:06,674 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/combinations/gcd_2+newton_3_7.i [2022-11-18 18:25:06,781 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/data/d191f2dd9/8a419ce909954f1b83dc135845ea8632/FLAG2b4e85bdb [2022-11-18 18:25:07,288 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:25:07,289 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/sv-benchmarks/c/combinations/gcd_2+newton_3_7.i [2022-11-18 18:25:07,300 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/data/d191f2dd9/8a419ce909954f1b83dc135845ea8632/FLAG2b4e85bdb [2022-11-18 18:25:07,681 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/data/d191f2dd9/8a419ce909954f1b83dc135845ea8632 [2022-11-18 18:25:07,685 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:25:07,687 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:25:07,693 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:25:07,694 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:25:07,697 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:25:07,698 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:25:07" (1/1) ... [2022-11-18 18:25:07,700 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f40cc61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:25:07, skipping insertion in model container [2022-11-18 18:25:07,700 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:25:07" (1/1) ... [2022-11-18 18:25:07,708 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:25:07,736 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:25:07,919 WARN L234 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_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/sv-benchmarks/c/combinations/gcd_2+newton_3_7.i[1226,1239] [2022-11-18 18:25:07,948 WARN L234 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_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/sv-benchmarks/c/combinations/gcd_2+newton_3_7.i[2862,2875] [2022-11-18 18:25:07,949 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:25:07,959 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:25:07,975 WARN L234 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_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/sv-benchmarks/c/combinations/gcd_2+newton_3_7.i[1226,1239] [2022-11-18 18:25:07,992 WARN L234 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_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/sv-benchmarks/c/combinations/gcd_2+newton_3_7.i[2862,2875] [2022-11-18 18:25:07,995 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:25:08,013 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:25:08,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:25:08 WrapperNode [2022-11-18 18:25:08,014 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:25:08,015 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:25:08,015 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:25:08,015 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:25:08,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:25:08" (1/1) ... [2022-11-18 18:25:08,031 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:25:08" (1/1) ... [2022-11-18 18:25:08,056 INFO L138 Inliner]: procedures = 27, calls = 26, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 90 [2022-11-18 18:25:08,056 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:25:08,057 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:25:08,057 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:25:08,057 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:25:08,071 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:25:08" (1/1) ... [2022-11-18 18:25:08,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:25:08" (1/1) ... [2022-11-18 18:25:08,075 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:25:08" (1/1) ... [2022-11-18 18:25:08,087 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:25:08" (1/1) ... [2022-11-18 18:25:08,093 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:25:08" (1/1) ... [2022-11-18 18:25:08,098 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:25:08" (1/1) ... [2022-11-18 18:25:08,101 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:25:08" (1/1) ... [2022-11-18 18:25:08,112 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:25:08" (1/1) ... [2022-11-18 18:25:08,115 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:25:08,116 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:25:08,116 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:25:08,116 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:25:08,117 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:25:08" (1/1) ... [2022-11-18 18:25:08,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:25:08,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:25:08,153 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:25:08,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:25:08,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:25:08,215 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-11-18 18:25:08,215 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-11-18 18:25:08,216 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-11-18 18:25:08,226 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-11-18 18:25:08,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 18:25:08,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:25:08,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:25:08,298 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:25:08,301 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:25:08,473 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:25:08,479 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:25:08,479 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-18 18:25:08,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:25:08 BoogieIcfgContainer [2022-11-18 18:25:08,482 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:25:08,484 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:25:08,484 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:25:08,488 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:25:08,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:25:07" (1/3) ... [2022-11-18 18:25:08,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c663db1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:25:08, skipping insertion in model container [2022-11-18 18:25:08,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:25:08" (2/3) ... [2022-11-18 18:25:08,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c663db1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:25:08, skipping insertion in model container [2022-11-18 18:25:08,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:25:08" (3/3) ... [2022-11-18 18:25:08,492 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_2+newton_3_7.i [2022-11-18 18:25:08,513 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:25:08,513 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-18 18:25:08,566 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:25:08,573 INFO L357 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=PETRI_NET, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1fcc589f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:25:08,573 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-18 18:25:08,578 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 31 states have internal predecessors, (40), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-18 18:25:08,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-18 18:25:08,586 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:25:08,586 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:25:08,587 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:25:08,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:25:08,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1709385323, now seen corresponding path program 1 times [2022-11-18 18:25:08,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:25:08,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577040174] [2022-11-18 18:25:08,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:25:08,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:25:08,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:25:08,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:25:08,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:25:08,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577040174] [2022-11-18 18:25:08,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577040174] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:25:08,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:25:08,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:25:08,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174880480] [2022-11-18 18:25:08,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:25:08,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:25:08,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:25:08,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:25:08,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:25:08,956 INFO L87 Difference]: Start difference. First operand has 40 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 31 states have internal predecessors, (40), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-11-18 18:25:09,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:25:09,105 INFO L93 Difference]: Finished difference Result 96 states and 121 transitions. [2022-11-18 18:25:09,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:25:09,153 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2022-11-18 18:25:09,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:25:09,179 INFO L225 Difference]: With dead ends: 96 [2022-11-18 18:25:09,179 INFO L226 Difference]: Without dead ends: 39 [2022-11-18 18:25:09,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:25:09,202 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 30 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:25:09,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 122 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:25:09,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-11-18 18:25:09,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2022-11-18 18:25:09,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-18 18:25:09,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2022-11-18 18:25:09,259 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 11 [2022-11-18 18:25:09,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:25:09,260 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2022-11-18 18:25:09,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-11-18 18:25:09,261 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2022-11-18 18:25:09,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-18 18:25:09,264 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:25:09,264 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:25:09,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 18:25:09,265 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:25:09,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:25:09,266 INFO L85 PathProgramCache]: Analyzing trace with hash 65622039, now seen corresponding path program 1 times [2022-11-18 18:25:09,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:25:09,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365783181] [2022-11-18 18:25:09,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:25:09,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:25:09,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:25:09,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:25:09,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:25:09,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365783181] [2022-11-18 18:25:09,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365783181] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:25:09,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:25:09,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:25:09,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898458147] [2022-11-18 18:25:09,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:25:09,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:25:09,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:25:09,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:25:09,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:25:09,460 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-11-18 18:25:09,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:25:09,510 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2022-11-18 18:25:09,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:25:09,516 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2022-11-18 18:25:09,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:25:09,517 INFO L225 Difference]: With dead ends: 39 [2022-11-18 18:25:09,517 INFO L226 Difference]: Without dead ends: 33 [2022-11-18 18:25:09,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:25:09,519 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 4 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:25:09,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 97 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:25:09,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-18 18:25:09,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-11-18 18:25:09,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 24 states have internal predecessors, (26), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-18 18:25:09,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2022-11-18 18:25:09,528 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 11 [2022-11-18 18:25:09,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:25:09,528 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2022-11-18 18:25:09,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-11-18 18:25:09,529 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2022-11-18 18:25:09,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-18 18:25:09,530 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:25:09,530 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:25:09,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 18:25:09,531 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:25:09,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:25:09,531 INFO L85 PathProgramCache]: Analyzing trace with hash -659390950, now seen corresponding path program 1 times [2022-11-18 18:25:09,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:25:09,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762065785] [2022-11-18 18:25:09,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:25:09,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:25:09,559 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:25:09,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [108235805] [2022-11-18 18:25:09,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:25:09,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:25:09,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:25:09,567 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:25:09,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 18:25:09,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:25:09,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 18:25:09,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:25:09,848 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:25:09,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:25:09,948 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:25:09,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:25:09,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762065785] [2022-11-18 18:25:09,949 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:25:09,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108235805] [2022-11-18 18:25:09,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108235805] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:25:09,950 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:25:09,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2022-11-18 18:25:09,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151293386] [2022-11-18 18:25:09,950 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:25:09,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 18:25:09,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:25:09,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 18:25:09,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:25:09,952 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 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) [2022-11-18 18:25:10,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:25:10,120 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2022-11-18 18:25:10,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:25:10,121 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 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 12 [2022-11-18 18:25:10,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:25:10,124 INFO L225 Difference]: With dead ends: 40 [2022-11-18 18:25:10,124 INFO L226 Difference]: Without dead ends: 34 [2022-11-18 18:25:10,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:25:10,126 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 7 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:25:10,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 214 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:25:10,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-18 18:25:10,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-11-18 18:25:10,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 24 states have (on average 1.125) internal successors, (27), 25 states have internal predecessors, (27), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-18 18:25:10,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2022-11-18 18:25:10,134 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 12 [2022-11-18 18:25:10,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:25:10,134 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2022-11-18 18:25:10,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 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) [2022-11-18 18:25:10,135 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2022-11-18 18:25:10,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 18:25:10,136 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:25:10,136 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:25:10,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 18:25:10,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:25:10,342 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:25:10,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:25:10,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1659957129, now seen corresponding path program 2 times [2022-11-18 18:25:10,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:25:10,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771815453] [2022-11-18 18:25:10,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:25:10,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:25:10,355 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:25:10,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2012085853] [2022-11-18 18:25:10,355 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:25:10,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:25:10,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:25:10,357 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:25:10,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 18:25:10,463 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:25:10,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:25:10,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 18:25:10,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:25:24,334 WARN L233 SmtUtils]: Spent 12.80s on a formula simplification. DAG size of input: 72 DAG size of output: 40 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:25:25,815 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:25:25,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:27:30,402 WARN L233 SmtUtils]: Spent 1.82m on a formula simplification. DAG size of input: 129 DAG size of output: 35 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:27:31,599 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:27:31,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:27:31,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771815453] [2022-11-18 18:27:31,600 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:27:31,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012085853] [2022-11-18 18:27:31,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012085853] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:27:31,601 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:27:31,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-18 18:27:31,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803928524] [2022-11-18 18:27:31,602 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:27:31,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 18:27:31,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:27:31,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 18:27:31,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-11-18 18:27:31,605 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand has 16 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 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) [2022-11-18 18:27:36,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:27:36,905 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2022-11-18 18:27:36,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 18:27:36,906 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 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 [2022-11-18 18:27:36,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:27:36,906 INFO L225 Difference]: With dead ends: 41 [2022-11-18 18:27:36,907 INFO L226 Difference]: Without dead ends: 35 [2022-11-18 18:27:36,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 133.3s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2022-11-18 18:27:36,909 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 5 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 22 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:27:36,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 302 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 22 Unchecked, 0.0s Time] [2022-11-18 18:27:36,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-18 18:27:36,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-11-18 18:27:36,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 25 states have (on average 1.12) internal successors, (28), 26 states have internal predecessors, (28), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-18 18:27:36,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2022-11-18 18:27:36,917 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 13 [2022-11-18 18:27:36,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:27:36,917 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2022-11-18 18:27:36,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 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) [2022-11-18 18:27:36,918 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2022-11-18 18:27:36,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 18:27:36,922 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:27:36,922 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:27:36,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 18:27:37,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:27:37,124 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:27:37,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:27:37,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1682229690, now seen corresponding path program 3 times [2022-11-18 18:27:37,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:27:37,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839446473] [2022-11-18 18:27:37,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:27:37,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:27:37,137 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:27:37,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1659442491] [2022-11-18 18:27:37,142 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 18:27:37,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:27:37,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:27:37,144 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:27:37,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 18:27:37,353 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-18 18:27:37,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:27:37,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-18 18:27:37,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:27:55,539 WARN L233 SmtUtils]: Spent 9.88s on a formula simplification. DAG size of input: 55 DAG size of output: 46 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:28:46,137 WARN L233 SmtUtils]: Spent 36.67s on a formula simplification. DAG size of input: 88 DAG size of output: 80 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:29:16,534 WARN L233 SmtUtils]: Spent 24.35s on a formula simplification. DAG size of input: 65 DAG size of output: 60 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:29:27,890 WARN L233 SmtUtils]: Spent 7.40s on a formula simplification that was a NOOP. DAG size: 60 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:29:51,884 WARN L233 SmtUtils]: Spent 21.44s on a formula simplification. DAG size of input: 61 DAG size of output: 60 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:29:54,572 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:29:54,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:30:36,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:30:36,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839446473] [2022-11-18 18:30:36,618 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:30:36,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659442491] [2022-11-18 18:30:36,619 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-11-18 18:30:36,625 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 139 [2022-11-18 18:30:36,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 18:30:36,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:30:36,826 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:61) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.getRedundancy(SimplifyDDA.java:620) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getRedundancy(SimplifyDDAWithTimeout.java:120) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:370) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:649) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:180) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:198) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:361) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:306) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:582) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:342) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1465) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) ... 52 more [2022-11-18 18:30:36,832 INFO L158 Benchmark]: Toolchain (without parser) took 329144.82ms. Allocated memory was 144.7MB in the beginning and 176.2MB in the end (delta: 31.5MB). Free memory was 111.9MB in the beginning and 69.7MB in the end (delta: 42.2MB). Peak memory consumption was 72.8MB. Max. memory is 16.1GB. [2022-11-18 18:30:36,833 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 94.4MB. Free memory was 48.4MB in the beginning and 48.3MB in the end (delta: 76.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 18:30:36,834 INFO L158 Benchmark]: CACSL2BoogieTranslator took 320.75ms. Allocated memory is still 144.7MB. Free memory was 111.9MB in the beginning and 119.2MB in the end (delta: -7.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-18 18:30:36,834 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.30ms. Allocated memory is still 144.7MB. Free memory was 119.2MB in the beginning and 117.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 18:30:36,836 INFO L158 Benchmark]: Boogie Preprocessor took 58.10ms. Allocated memory is still 144.7MB. Free memory was 117.6MB in the beginning and 116.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 18:30:36,838 INFO L158 Benchmark]: RCFGBuilder took 366.17ms. Allocated memory is still 144.7MB. Free memory was 116.2MB in the beginning and 103.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-18 18:30:36,839 INFO L158 Benchmark]: TraceAbstraction took 328347.31ms. Allocated memory was 144.7MB in the beginning and 176.2MB in the end (delta: 31.5MB). Free memory was 103.0MB in the beginning and 69.7MB in the end (delta: 33.3MB). Peak memory consumption was 65.3MB. Max. memory is 16.1GB. [2022-11-18 18:30:36,842 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 94.4MB. Free memory was 48.4MB in the beginning and 48.3MB in the end (delta: 76.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 320.75ms. Allocated memory is still 144.7MB. Free memory was 111.9MB in the beginning and 119.2MB in the end (delta: -7.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.30ms. Allocated memory is still 144.7MB. Free memory was 119.2MB in the beginning and 117.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 58.10ms. Allocated memory is still 144.7MB. Free memory was 117.6MB in the beginning and 116.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 366.17ms. Allocated memory is still 144.7MB. Free memory was 116.2MB in the beginning and 103.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 328347.31ms. Allocated memory was 144.7MB in the beginning and 176.2MB in the end (delta: 31.5MB). Free memory was 103.0MB in the beginning and 69.7MB in the end (delta: 33.3MB). Peak memory consumption was 65.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. No stderr output. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. No stderr output.: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_2+newton_3_7.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 803cbc2ab2fb54f2ccf794a1cf55b1df2243f22f996d0e59d0f49967facf7958 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 18:30:39,374 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:30:39,377 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:30:39,403 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:30:39,404 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:30:39,405 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:30:39,407 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:30:39,410 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:30:39,412 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:30:39,413 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:30:39,415 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:30:39,416 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:30:39,417 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:30:39,419 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:30:39,420 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:30:39,422 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:30:39,423 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:30:39,425 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:30:39,427 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:30:39,430 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:30:39,432 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:30:39,434 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:30:39,436 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:30:39,437 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:30:39,442 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:30:39,443 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:30:39,443 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:30:39,445 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:30:39,446 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:30:39,447 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:30:39,448 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:30:39,449 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:30:39,450 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:30:39,451 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:30:39,453 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:30:39,453 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:30:39,455 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:30:39,455 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:30:39,455 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:30:39,457 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:30:39,458 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:30:39,459 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-11-18 18:30:39,490 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:30:39,490 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:30:39,491 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:30:39,491 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:30:39,492 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:30:39,493 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:30:39,493 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:30:39,494 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:30:39,494 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:30:39,494 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:30:39,495 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:30:39,495 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:30:39,495 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:30:39,496 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:30:39,496 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:30:39,496 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:30:39,496 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-18 18:30:39,497 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-18 18:30:39,497 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-18 18:30:39,497 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:30:39,498 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:30:39,498 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:30:39,498 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:30:39,499 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:30:39,499 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:30:39,499 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:30:39,499 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:30:39,500 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:30:39,500 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:30:39,500 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:30:39,500 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-18 18:30:39,501 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-18 18:30:39,501 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:30:39,501 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:30:39,502 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:30:39,502 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-18 18:30:39,502 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 803cbc2ab2fb54f2ccf794a1cf55b1df2243f22f996d0e59d0f49967facf7958 [2022-11-18 18:30:39,909 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:30:39,940 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:30:39,944 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:30:39,946 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:30:39,954 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:30:39,956 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/combinations/gcd_2+newton_3_7.i [2022-11-18 18:30:40,050 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/data/fa54d9679/9f8eec8c079d48009424441523c9c2a7/FLAG4fe3b507c [2022-11-18 18:30:40,689 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:30:40,690 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/sv-benchmarks/c/combinations/gcd_2+newton_3_7.i [2022-11-18 18:30:40,698 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/data/fa54d9679/9f8eec8c079d48009424441523c9c2a7/FLAG4fe3b507c [2022-11-18 18:30:41,048 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/data/fa54d9679/9f8eec8c079d48009424441523c9c2a7 [2022-11-18 18:30:41,051 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:30:41,056 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:30:41,058 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:30:41,059 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:30:41,063 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:30:41,064 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:30:41" (1/1) ... [2022-11-18 18:30:41,066 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54ca1c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:41, skipping insertion in model container [2022-11-18 18:30:41,066 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:30:41" (1/1) ... [2022-11-18 18:30:41,075 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:30:41,105 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:30:41,379 WARN L234 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_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/sv-benchmarks/c/combinations/gcd_2+newton_3_7.i[1226,1239] [2022-11-18 18:30:41,445 WARN L234 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_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/sv-benchmarks/c/combinations/gcd_2+newton_3_7.i[2862,2875] [2022-11-18 18:30:41,446 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:30:41,460 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:30:41,477 WARN L234 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_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/sv-benchmarks/c/combinations/gcd_2+newton_3_7.i[1226,1239] [2022-11-18 18:30:41,490 WARN L234 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_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/sv-benchmarks/c/combinations/gcd_2+newton_3_7.i[2862,2875] [2022-11-18 18:30:41,491 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:30:41,509 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:30:41,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:41 WrapperNode [2022-11-18 18:30:41,510 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:30:41,512 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:30:41,512 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:30:41,512 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:30:41,522 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:41" (1/1) ... [2022-11-18 18:30:41,535 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:41" (1/1) ... [2022-11-18 18:30:41,562 INFO L138 Inliner]: procedures = 28, calls = 26, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 85 [2022-11-18 18:30:41,562 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:30:41,563 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:30:41,563 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:30:41,564 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:30:41,575 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:41" (1/1) ... [2022-11-18 18:30:41,576 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:41" (1/1) ... [2022-11-18 18:30:41,580 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:41" (1/1) ... [2022-11-18 18:30:41,581 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:41" (1/1) ... [2022-11-18 18:30:41,590 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:41" (1/1) ... [2022-11-18 18:30:41,595 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:41" (1/1) ... [2022-11-18 18:30:41,598 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:41" (1/1) ... [2022-11-18 18:30:41,599 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:41" (1/1) ... [2022-11-18 18:30:41,603 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:30:41,604 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:30:41,605 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:30:41,605 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:30:41,606 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:41" (1/1) ... [2022-11-18 18:30:41,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:30:41,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:30:41,670 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:30:41,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:30:41,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:30:41,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-18 18:30:41,723 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-11-18 18:30:41,723 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-11-18 18:30:41,723 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-11-18 18:30:41,724 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-11-18 18:30:41,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:30:41,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:30:41,875 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:30:41,878 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:30:53,321 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:30:53,328 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:30:53,328 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-18 18:30:53,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:30:53 BoogieIcfgContainer [2022-11-18 18:30:53,331 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:30:53,341 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:30:53,341 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:30:53,345 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:30:53,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:30:41" (1/3) ... [2022-11-18 18:30:53,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36d13f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:30:53, skipping insertion in model container [2022-11-18 18:30:53,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:41" (2/3) ... [2022-11-18 18:30:53,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36d13f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:30:53, skipping insertion in model container [2022-11-18 18:30:53,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:30:53" (3/3) ... [2022-11-18 18:30:53,350 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_2+newton_3_7.i [2022-11-18 18:30:53,372 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:30:53,372 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-18 18:30:53,436 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:30:53,445 INFO L357 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=PETRI_NET, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1fc8f8db, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:30:53,446 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-18 18:30:53,451 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 31 states have internal predecessors, (40), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-18 18:30:53,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-18 18:30:53,463 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:30:53,464 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:53,464 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:30:53,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:53,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1709385323, now seen corresponding path program 1 times [2022-11-18 18:30:53,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:30:53,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1022721592] [2022-11-18 18:30:53,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:53,491 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:30:53,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:30:53,501 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:30:53,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-18 18:30:53,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:53,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:30:53,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:30:53,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:53,880 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:30:53,881 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:30:53,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1022721592] [2022-11-18 18:30:53,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1022721592] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:30:53,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:30:53,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:30:53,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871800198] [2022-11-18 18:30:53,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:30:53,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:30:53,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:30:53,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:30:53,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:30:53,947 INFO L87 Difference]: Start difference. First operand has 40 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 31 states have internal predecessors, (40), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2022-11-18 18:30:54,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:30:54,007 INFO L93 Difference]: Finished difference Result 74 states and 94 transitions. [2022-11-18 18:30:54,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:30:54,012 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2022-11-18 18:30:54,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:30:54,022 INFO L225 Difference]: With dead ends: 74 [2022-11-18 18:30:54,022 INFO L226 Difference]: Without dead ends: 33 [2022-11-18 18:30:54,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:30:54,033 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 0 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:30:54,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 90 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 4 Unchecked, 0.0s Time] [2022-11-18 18:30:54,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-18 18:30:54,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-11-18 18:30:54,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-18 18:30:54,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2022-11-18 18:30:54,096 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 11 [2022-11-18 18:30:54,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:30:54,097 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2022-11-18 18:30:54,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2022-11-18 18:30:54,099 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2022-11-18 18:30:54,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-18 18:30:54,101 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:30:54,102 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:54,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-18 18:30:54,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:30:54,316 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:30:54,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:54,317 INFO L85 PathProgramCache]: Analyzing trace with hash 65622039, now seen corresponding path program 1 times [2022-11-18 18:30:54,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:30:54,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1950165213] [2022-11-18 18:30:54,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:54,319 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:30:54,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:30:54,321 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:30:54,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-18 18:30:54,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:54,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 18:30:54,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:30:54,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:54,597 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:30:54,597 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:30:54,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1950165213] [2022-11-18 18:30:54,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1950165213] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:30:54,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:30:54,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:30:54,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357081567] [2022-11-18 18:30:54,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:30:54,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:30:54,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:30:54,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:30:54,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:30:54,603 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-11-18 18:30:54,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:30:54,845 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2022-11-18 18:30:54,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:30:54,847 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2022-11-18 18:30:54,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:30:54,848 INFO L225 Difference]: With dead ends: 40 [2022-11-18 18:30:54,848 INFO L226 Difference]: Without dead ends: 34 [2022-11-18 18:30:54,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:30:54,851 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 4 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:30:54,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 99 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 18:30:54,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-18 18:30:54,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2022-11-18 18:30:54,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-18 18:30:54,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2022-11-18 18:30:54,865 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 11 [2022-11-18 18:30:54,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:30:54,865 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2022-11-18 18:30:54,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-11-18 18:30:54,866 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2022-11-18 18:30:54,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-18 18:30:54,867 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:30:54,867 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:54,881 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-18 18:30:55,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:30:55,068 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:30:55,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:55,070 INFO L85 PathProgramCache]: Analyzing trace with hash 149955676, now seen corresponding path program 1 times [2022-11-18 18:30:55,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:30:55,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2097844801] [2022-11-18 18:30:55,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:55,071 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:30:55,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:30:55,073 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:30:55,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-18 18:30:55,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:55,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 18:30:55,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:30:55,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:30:55,351 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:30:55,352 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:30:55,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2097844801] [2022-11-18 18:30:55,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2097844801] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:30:55,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:30:55,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:30:55,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519907431] [2022-11-18 18:30:55,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:30:55,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:30:55,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:30:55,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:30:55,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:30:55,365 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2022-11-18 18:30:55,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:30:55,512 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2022-11-18 18:30:55,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:30:55,518 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2022-11-18 18:30:55,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:30:55,519 INFO L225 Difference]: With dead ends: 41 [2022-11-18 18:30:55,520 INFO L226 Difference]: Without dead ends: 33 [2022-11-18 18:30:55,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:30:55,522 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 2 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:30:55,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 99 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:30:55,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-18 18:30:55,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-11-18 18:30:55,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 24 states have internal predecessors, (26), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-18 18:30:55,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2022-11-18 18:30:55,531 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 12 [2022-11-18 18:30:55,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:30:55,532 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2022-11-18 18:30:55,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2022-11-18 18:30:55,533 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2022-11-18 18:30:55,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-18 18:30:55,534 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:30:55,534 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:55,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-18 18:30:55,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:30:55,748 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:30:55,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:55,748 INFO L85 PathProgramCache]: Analyzing trace with hash -659390950, now seen corresponding path program 1 times [2022-11-18 18:30:55,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:30:55,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1858984197] [2022-11-18 18:30:55,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:55,750 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:30:55,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:30:55,758 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:30:55,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-18 18:30:55,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:55,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 18:30:55,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:30:56,616 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:56,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:30:57,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:57,528 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:30:57,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1858984197] [2022-11-18 18:30:57,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1858984197] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:30:57,532 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:30:57,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-11-18 18:30:57,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664596273] [2022-11-18 18:30:57,533 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:30:57,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 18:30:57,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:30:57,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 18:30:57,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-11-18 18:30:57,538 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand has 14 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 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) [2022-11-18 18:31:00,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:31:00,197 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2022-11-18 18:31:00,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 18:31:00,198 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 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 12 [2022-11-18 18:31:00,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:31:00,200 INFO L225 Difference]: With dead ends: 50 [2022-11-18 18:31:00,201 INFO L226 Difference]: Without dead ends: 36 [2022-11-18 18:31:00,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=151, Invalid=449, Unknown=0, NotChecked=0, Total=600 [2022-11-18 18:31:00,203 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 32 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:31:00,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 265 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-18 18:31:00,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-18 18:31:00,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-11-18 18:31:00,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 27 states have internal predecessors, (29), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-18 18:31:00,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2022-11-18 18:31:00,213 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 12 [2022-11-18 18:31:00,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:31:00,214 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2022-11-18 18:31:00,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 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) [2022-11-18 18:31:00,214 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2022-11-18 18:31:00,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-18 18:31:00,215 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:31:00,216 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:31:00,232 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-11-18 18:31:00,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:31:00,420 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:31:00,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:31:00,421 INFO L85 PathProgramCache]: Analyzing trace with hash -2084161321, now seen corresponding path program 2 times [2022-11-18 18:31:00,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:31:00,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [780404377] [2022-11-18 18:31:00,421 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:31:00,422 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:31:00,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:31:00,423 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:31:00,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-18 18:31:07,961 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:31:07,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:31:07,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-18 18:31:07,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:32:13,600 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:32:13,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:35:06,545 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:35:06,546 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:35:06,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [780404377] [2022-11-18 18:35:06,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [780404377] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:35:06,546 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:35:06,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-11-18 18:35:06,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551181809] [2022-11-18 18:35:06,547 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:35:06,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-18 18:35:06,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:35:06,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-18 18:35:06,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=431, Unknown=39, NotChecked=0, Total=552 [2022-11-18 18:35:06,548 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand has 24 states, 24 states have (on average 1.125) internal successors, (27), 24 states have internal predecessors, (27), 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) [2022-11-18 18:35:28,703 WARN L233 SmtUtils]: Spent 14.97s on a formula simplification. DAG size of input: 44 DAG size of output: 14 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:36:40,553 WARN L233 SmtUtils]: Spent 38.37s on a formula simplification. DAG size of input: 48 DAG size of output: 46 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:37:26,975 WARN L233 SmtUtils]: Spent 11.76s on a formula simplification. DAG size of input: 36 DAG size of output: 33 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:37:54,300 WARN L233 SmtUtils]: Spent 12.07s on a formula simplification. DAG size of input: 36 DAG size of output: 33 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:37:54,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:37:54,332 INFO L93 Difference]: Finished difference Result 53 states and 59 transitions. [2022-11-18 18:37:54,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 18:37:54,333 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.125) internal successors, (27), 24 states have internal predecessors, (27), 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 15 [2022-11-18 18:37:54,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:37:54,334 INFO L225 Difference]: With dead ends: 53 [2022-11-18 18:37:54,335 INFO L226 Difference]: Without dead ends: 43 [2022-11-18 18:37:54,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 352.6s TimeCoverageRelationStatistics Valid=126, Invalid=743, Unknown=61, NotChecked=0, Total=930 [2022-11-18 18:37:54,337 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 4 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:37:54,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 433 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 20 Unchecked, 0.0s Time] [2022-11-18 18:37:54,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-18 18:37:54,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2022-11-18 18:37:54,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 29 states have (on average 1.103448275862069) internal successors, (32), 30 states have internal predecessors, (32), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-18 18:37:54,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2022-11-18 18:37:54,349 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 15 [2022-11-18 18:37:54,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:37:54,349 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2022-11-18 18:37:54,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.125) internal successors, (27), 24 states have internal predecessors, (27), 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) [2022-11-18 18:37:54,350 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2022-11-18 18:37:54,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-18 18:37:54,351 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:37:54,351 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:37:54,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-18 18:37:54,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:54,570 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:37:54,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:37:54,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1825995883, now seen corresponding path program 1 times [2022-11-18 18:37:54,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:37:54,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [150458259] [2022-11-18 18:37:54,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:37:54,572 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:37:54,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:37:54,573 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:37:54,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93fcf5f6-da3e-4d73-9ae5-3d138d37d9df/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-18 18:37:58,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:37:58,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-18 18:37:58,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:38:36,891 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:36,891 INFO L328 TraceCheckSpWp]: Computing backward predicates...