./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_4+newton_3_5.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f 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_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_4+newton_3_5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8 --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 0c562931a6d05e325b28cce00e946abdf58c2b9fa526927c821e1aeeb79c8db9 --- 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-e04fb08 [2022-11-16 12:36:45,766 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:36:45,768 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:36:45,795 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:36:45,796 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:36:45,797 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:36:45,801 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:36:45,808 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:36:45,811 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:36:45,817 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:36:45,818 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:36:45,821 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:36:45,821 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:36:45,824 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:36:45,827 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:36:45,830 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:36:45,831 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:36:45,832 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:36:45,835 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:36:45,844 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:36:45,847 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:36:45,849 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:36:45,852 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:36:45,853 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:36:45,859 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:36:45,864 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:36:45,864 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:36:45,865 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:36:45,866 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:36:45,867 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:36:45,868 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:36:45,869 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:36:45,870 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:36:45,873 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:36:45,874 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:36:45,874 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:36:45,875 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:36:45,875 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:36:45,875 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:36:45,877 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:36:45,877 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:36:45,878 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 12:36:45,913 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:36:45,917 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:36:45,917 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:36:45,918 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:36:45,919 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:36:45,919 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:36:45,920 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:36:45,920 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:36:45,920 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:36:45,920 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:36:45,922 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:36:45,922 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:36:45,922 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:36:45,922 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:36:45,923 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:36:45,923 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:36:45,923 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:36:45,923 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:36:45,923 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:36:45,924 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:36:45,924 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:36:45,924 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:36:45,924 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:36:45,925 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:36:45,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:36:45,925 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:36:45,927 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:36:45,927 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:36:45,927 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:36:45,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:36:45,928 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:36:45,928 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:36:45,928 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:36:45,928 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_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c562931a6d05e325b28cce00e946abdf58c2b9fa526927c821e1aeeb79c8db9 [2022-11-16 12:36:46,214 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:36:46,255 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:36:46,258 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:36:46,259 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:36:46,260 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:36:46,261 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/combinations/gcd_4+newton_3_5.i [2022-11-16 12:36:46,334 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/data/9c070eeea/bc9108b570b84fa4a0206d76af8aea89/FLAGe531ff69d [2022-11-16 12:36:46,823 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:36:46,826 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/sv-benchmarks/c/combinations/gcd_4+newton_3_5.i [2022-11-16 12:36:46,848 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/data/9c070eeea/bc9108b570b84fa4a0206d76af8aea89/FLAGe531ff69d [2022-11-16 12:36:47,205 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/data/9c070eeea/bc9108b570b84fa4a0206d76af8aea89 [2022-11-16 12:36:47,208 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:36:47,211 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:36:47,217 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:36:47,217 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:36:47,221 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:36:47,222 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:36:47" (1/1) ... [2022-11-16 12:36:47,224 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4224abc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:36:47, skipping insertion in model container [2022-11-16 12:36:47,224 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:36:47" (1/1) ... [2022-11-16 12:36:47,232 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:36:47,257 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:36:47,448 WARN L229 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_25699d78-82c5-49f4-97d1-dace80925168/sv-benchmarks/c/combinations/gcd_4+newton_3_5.i[1224,1237] [2022-11-16 12:36:47,471 WARN L229 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_25699d78-82c5-49f4-97d1-dace80925168/sv-benchmarks/c/combinations/gcd_4+newton_3_5.i[2848,2861] [2022-11-16 12:36:47,473 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:36:47,482 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:36:47,496 WARN L229 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_25699d78-82c5-49f4-97d1-dace80925168/sv-benchmarks/c/combinations/gcd_4+newton_3_5.i[1224,1237] [2022-11-16 12:36:47,507 WARN L229 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_25699d78-82c5-49f4-97d1-dace80925168/sv-benchmarks/c/combinations/gcd_4+newton_3_5.i[2848,2861] [2022-11-16 12:36:47,508 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:36:47,523 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:36:47,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:36:47 WrapperNode [2022-11-16 12:36:47,524 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:36:47,525 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:36:47,525 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:36:47,525 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:36:47,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:36:47" (1/1) ... [2022-11-16 12:36:47,542 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:36:47" (1/1) ... [2022-11-16 12:36:47,563 INFO L138 Inliner]: procedures = 27, calls = 28, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 85 [2022-11-16 12:36:47,564 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:36:47,565 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:36:47,565 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:36:47,565 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:36:47,575 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:36:47" (1/1) ... [2022-11-16 12:36:47,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:36:47" (1/1) ... [2022-11-16 12:36:47,577 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:36:47" (1/1) ... [2022-11-16 12:36:47,577 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:36:47" (1/1) ... [2022-11-16 12:36:47,582 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:36:47" (1/1) ... [2022-11-16 12:36:47,586 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:36:47" (1/1) ... [2022-11-16 12:36:47,588 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:36:47" (1/1) ... [2022-11-16 12:36:47,589 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:36:47" (1/1) ... [2022-11-16 12:36:47,591 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:36:47,592 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:36:47,592 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:36:47,592 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:36:47,593 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:36:47" (1/1) ... [2022-11-16 12:36:47,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:36:47,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:36:47,628 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:36:47,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:36:47,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:36:47,671 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-11-16 12:36:47,671 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-11-16 12:36:47,672 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-11-16 12:36:47,672 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-11-16 12:36:47,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:36:47,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:36:47,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:36:47,673 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-16 12:36:47,673 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-16 12:36:47,747 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:36:47,750 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:36:47,992 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:36:47,999 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:36:47,999 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 12:36:48,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:36:48 BoogieIcfgContainer [2022-11-16 12:36:48,001 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:36:48,003 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:36:48,003 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:36:48,007 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:36:48,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:36:47" (1/3) ... [2022-11-16 12:36:48,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f5a0d4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:36:48, skipping insertion in model container [2022-11-16 12:36:48,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:36:47" (2/3) ... [2022-11-16 12:36:48,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f5a0d4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:36:48, skipping insertion in model container [2022-11-16 12:36:48,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:36:48" (3/3) ... [2022-11-16 12:36:48,010 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_4+newton_3_5.i [2022-11-16 12:36:48,034 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:36:48,050 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-16 12:36:48,118 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:36:48,130 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;@230c021, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:36:48,130 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-16 12:36:48,139 INFO L276 IsEmpty]: Start isEmpty. Operand has 46 states, 31 states have (on average 1.3870967741935485) internal successors, (43), 33 states have internal predecessors, (43), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-16 12:36:48,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 12:36:48,151 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:36:48,151 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:36:48,153 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:36:48,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:36:48,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1780387208, now seen corresponding path program 1 times [2022-11-16 12:36:48,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:36:48,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278116215] [2022-11-16 12:36:48,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:48,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:36:48,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:48,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:36:48,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278116215] [2022-11-16 12:36:48,392 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-16 12:36:48,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521915704] [2022-11-16 12:36:48,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:48,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:36:48,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:36:48,401 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:36:48,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:36:48,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:48,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:36:48,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:36:48,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:36:48,589 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:36:48,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521915704] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:36:48,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:36:48,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:36:48,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637970799] [2022-11-16 12:36:48,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:36:48,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:36:48,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:36:48,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:36:48,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:36:48,633 INFO L87 Difference]: Start difference. First operand has 46 states, 31 states have (on average 1.3870967741935485) internal successors, (43), 33 states have internal predecessors, (43), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:48,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:36:48,683 INFO L93 Difference]: Finished difference Result 97 states and 134 transitions. [2022-11-16 12:36:48,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:36:48,686 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-16 12:36:48,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:36:48,694 INFO L225 Difference]: With dead ends: 97 [2022-11-16 12:36:48,694 INFO L226 Difference]: Without dead ends: 45 [2022-11-16 12:36:48,698 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 [2022-11-16 12:36:48,701 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 11 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:36:48,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 100 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:36:48,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-11-16 12:36:48,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2022-11-16 12:36:48,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 29 states have internal predecessors, (34), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 12:36:48,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2022-11-16 12:36:48,758 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 51 transitions. Word has length 11 [2022-11-16 12:36:48,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:36:48,759 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 51 transitions. [2022-11-16 12:36:48,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:48,760 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 51 transitions. [2022-11-16 12:36:48,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 12:36:48,763 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:36:48,763 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:36:48,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:36:48,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-16 12:36:48,971 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:36:48,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:36:48,972 INFO L85 PathProgramCache]: Analyzing trace with hash -5379846, now seen corresponding path program 1 times [2022-11-16 12:36:48,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:36:48,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301592139] [2022-11-16 12:36:48,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:48,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:36:48,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:49,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:36:49,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301592139] [2022-11-16 12:36:49,015 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-16 12:36:49,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100689802] [2022-11-16 12:36:49,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:49,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:36:49,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:36:49,024 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:36:49,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:36:49,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:49,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:36:49,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:36:49,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:36:49,135 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:36:49,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100689802] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:36:49,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:36:49,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:36:49,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693582377] [2022-11-16 12:36:49,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:36:49,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:36:49,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:36:49,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:36:49,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:36:49,143 INFO L87 Difference]: Start difference. First operand 41 states and 51 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:49,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:36:49,189 INFO L93 Difference]: Finished difference Result 67 states and 87 transitions. [2022-11-16 12:36:49,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:36:49,190 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-16 12:36:49,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:36:49,192 INFO L225 Difference]: With dead ends: 67 [2022-11-16 12:36:49,192 INFO L226 Difference]: Without dead ends: 50 [2022-11-16 12:36:49,193 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 [2022-11-16 12:36:49,194 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 8 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:36:49,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 82 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:36:49,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-11-16 12:36:49,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 41. [2022-11-16 12:36:49,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 29 states have internal predecessors, (32), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 12:36:49,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2022-11-16 12:36:49,254 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 11 [2022-11-16 12:36:49,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:36:49,254 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2022-11-16 12:36:49,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:49,255 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2022-11-16 12:36:49,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-16 12:36:49,256 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:36:49,256 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:36:49,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:36:49,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:36:49,462 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:36:49,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:36:49,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1714945339, now seen corresponding path program 1 times [2022-11-16 12:36:49,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:36:49,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594463739] [2022-11-16 12:36:49,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:49,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:36:49,478 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:36:49,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1161293133] [2022-11-16 12:36:49,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:49,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:36:49,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:36:49,480 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:36:49,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:36:49,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:49,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:36:49,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:36:49,603 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:36:49,604 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:36:49,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:36:49,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594463739] [2022-11-16 12:36:49,604 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:36:49,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161293133] [2022-11-16 12:36:49,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161293133] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:36:49,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:36:49,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:36:49,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596657210] [2022-11-16 12:36:49,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:36:49,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:36:49,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:36:49,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:36:49,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:36:49,607 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:49,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:36:49,628 INFO L93 Difference]: Finished difference Result 56 states and 68 transitions. [2022-11-16 12:36:49,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:36:49,629 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-16 12:36:49,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:36:49,630 INFO L225 Difference]: With dead ends: 56 [2022-11-16 12:36:49,630 INFO L226 Difference]: Without dead ends: 43 [2022-11-16 12:36:49,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:36:49,632 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 0 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 78 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 [2022-11-16 12:36:49,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 78 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:36:49,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-16 12:36:49,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-11-16 12:36:49,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 31 states have internal predecessors, (34), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 12:36:49,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions. [2022-11-16 12:36:49,640 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 51 transitions. Word has length 15 [2022-11-16 12:36:49,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:36:49,640 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 51 transitions. [2022-11-16 12:36:49,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:49,641 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2022-11-16 12:36:49,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-16 12:36:49,642 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:36:49,642 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:36:49,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:36:49,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:36:49,848 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:36:49,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:36:49,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1030187394, now seen corresponding path program 1 times [2022-11-16 12:36:49,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:36:49,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262742809] [2022-11-16 12:36:49,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:49,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:36:49,864 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:36:49,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [62796907] [2022-11-16 12:36:49,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:49,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:36:49,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:36:49,866 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:36:49,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:36:49,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:49,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:36:49,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:36:50,038 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:36:50,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:36:50,108 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:36:50,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:36:50,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262742809] [2022-11-16 12:36:50,109 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:36:50,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62796907] [2022-11-16 12:36:50,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62796907] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:36:50,109 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:36:50,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-11-16 12:36:50,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958689202] [2022-11-16 12:36:50,110 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:36:50,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:36:50,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:36:50,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:36:50,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:36:50,111 INFO L87 Difference]: Start difference. First operand 43 states and 51 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:50,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:36:50,197 INFO L93 Difference]: Finished difference Result 60 states and 73 transitions. [2022-11-16 12:36:50,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:36:50,197 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-16 12:36:50,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:36:50,198 INFO L225 Difference]: With dead ends: 60 [2022-11-16 12:36:50,198 INFO L226 Difference]: Without dead ends: 47 [2022-11-16 12:36:50,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:36:50,200 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 3 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:36:50,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 152 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:36:50,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-11-16 12:36:50,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2022-11-16 12:36:50,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 35 states have internal predecessors, (38), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 12:36:50,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2022-11-16 12:36:50,223 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 17 [2022-11-16 12:36:50,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:36:50,223 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2022-11-16 12:36:50,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:50,224 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2022-11-16 12:36:50,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-16 12:36:50,224 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:36:50,225 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:36:50,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:36:50,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:36:50,425 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:36:50,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:36:50,426 INFO L85 PathProgramCache]: Analyzing trace with hash -626272964, now seen corresponding path program 2 times [2022-11-16 12:36:50,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:36:50,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579890001] [2022-11-16 12:36:50,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:50,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:36:50,442 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:36:50,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [263333310] [2022-11-16 12:36:50,443 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:36:50,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:36:50,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:36:50,444 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:36:50,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 12:36:50,524 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:36:50,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:36:50,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 12:36:50,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:36:50,740 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:36:50,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:36:50,840 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:36:50,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:36:50,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579890001] [2022-11-16 12:36:50,840 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:36:50,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263333310] [2022-11-16 12:36:50,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263333310] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:36:50,841 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:36:50,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-11-16 12:36:50,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195871316] [2022-11-16 12:36:50,841 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:36:50,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:36:50,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:36:50,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:36:50,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:36:50,846 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:51,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:36:51,022 INFO L93 Difference]: Finished difference Result 68 states and 86 transitions. [2022-11-16 12:36:51,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:36:51,024 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-16 12:36:51,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:36:51,026 INFO L225 Difference]: With dead ends: 68 [2022-11-16 12:36:51,026 INFO L226 Difference]: Without dead ends: 53 [2022-11-16 12:36:51,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:36:51,028 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 15 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:36:51,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 226 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:36:51,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-11-16 12:36:51,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2022-11-16 12:36:51,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 39 states have (on average 1.1538461538461537) internal successors, (45), 41 states have internal predecessors, (45), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 12:36:51,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 62 transitions. [2022-11-16 12:36:51,049 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 62 transitions. Word has length 21 [2022-11-16 12:36:51,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:36:51,050 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 62 transitions. [2022-11-16 12:36:51,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:51,050 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 62 transitions. [2022-11-16 12:36:51,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-16 12:36:51,051 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:36:51,051 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:36:51,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 12:36:51,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:36:51,262 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:36:51,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:36:51,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1120707465, now seen corresponding path program 3 times [2022-11-16 12:36:51,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:36:51,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346917966] [2022-11-16 12:36:51,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:51,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:36:51,293 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:36:51,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [349989271] [2022-11-16 12:36:51,293 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:36:51,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:36:51,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:36:51,297 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:36:51,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 12:36:51,364 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-16 12:36:51,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:36:51,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-16 12:36:51,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:36:51,558 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 12:36:51,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:36:51,961 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 12:36:51,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:36:51,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346917966] [2022-11-16 12:36:51,961 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:36:51,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349989271] [2022-11-16 12:36:51,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349989271] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:36:51,962 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:36:51,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-16 12:36:51,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679799081] [2022-11-16 12:36:51,962 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:36:51,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:36:51,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:36:51,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:36:51,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:36:51,964 INFO L87 Difference]: Start difference. First operand 53 states and 62 transitions. Second operand has 18 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:52,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:36:52,695 INFO L93 Difference]: Finished difference Result 81 states and 101 transitions. [2022-11-16 12:36:52,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-16 12:36:52,697 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-16 12:36:52,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:36:52,699 INFO L225 Difference]: With dead ends: 81 [2022-11-16 12:36:52,699 INFO L226 Difference]: Without dead ends: 78 [2022-11-16 12:36:52,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=132, Invalid=624, Unknown=0, NotChecked=0, Total=756 [2022-11-16 12:36:52,700 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 33 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:36:52,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 495 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 12:36:52,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-11-16 12:36:52,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 70. [2022-11-16 12:36:52,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 52 states have (on average 1.2307692307692308) internal successors, (64), 56 states have internal predecessors, (64), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-16 12:36:52,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 86 transitions. [2022-11-16 12:36:52,732 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 86 transitions. Word has length 23 [2022-11-16 12:36:52,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:36:52,733 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 86 transitions. [2022-11-16 12:36:52,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:52,733 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 86 transitions. [2022-11-16 12:36:52,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-16 12:36:52,737 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:36:52,737 INFO L195 NwaCegarLoop]: trace histogram [6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:36:52,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 12:36:52,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:36:52,942 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:36:52,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:36:52,943 INFO L85 PathProgramCache]: Analyzing trace with hash 469106930, now seen corresponding path program 4 times [2022-11-16 12:36:52,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:36:52,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130377426] [2022-11-16 12:36:52,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:52,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:36:52,958 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:36:52,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [904001708] [2022-11-16 12:36:52,958 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 12:36:52,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:36:52,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:36:52,960 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:36:52,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 12:36:53,017 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 12:36:53,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:36:53,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 12:36:53,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:36:53,168 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:36:53,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:36:53,306 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:36:53,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:36:53,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130377426] [2022-11-16 12:36:53,306 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:36:53,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904001708] [2022-11-16 12:36:53,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904001708] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:36:53,307 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:36:53,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-16 12:36:53,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246189775] [2022-11-16 12:36:53,307 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:36:53,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 12:36:53,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:36:53,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 12:36:53,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:36:53,309 INFO L87 Difference]: Start difference. First operand 70 states and 86 transitions. Second operand has 16 states, 16 states have (on average 2.5625) internal successors, (41), 16 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:53,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:36:53,513 INFO L93 Difference]: Finished difference Result 94 states and 117 transitions. [2022-11-16 12:36:53,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:36:53,514 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.5625) internal successors, (41), 16 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-16 12:36:53,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:36:53,516 INFO L225 Difference]: With dead ends: 94 [2022-11-16 12:36:53,516 INFO L226 Difference]: Without dead ends: 66 [2022-11-16 12:36:53,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2022-11-16 12:36:53,522 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 33 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:36:53,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 411 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:36:53,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-11-16 12:36:53,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2022-11-16 12:36:53,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 48 states have (on average 1.1458333333333333) internal successors, (55), 52 states have internal predecessors, (55), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-16 12:36:53,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 77 transitions. [2022-11-16 12:36:53,543 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 77 transitions. Word has length 25 [2022-11-16 12:36:53,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:36:53,543 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 77 transitions. [2022-11-16 12:36:53,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.5625) internal successors, (41), 16 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:53,544 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 77 transitions. [2022-11-16 12:36:53,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-16 12:36:53,547 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:36:53,547 INFO L195 NwaCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:36:53,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 12:36:53,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:36:53,753 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:36:53,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:36:53,753 INFO L85 PathProgramCache]: Analyzing trace with hash -985782289, now seen corresponding path program 5 times [2022-11-16 12:36:53,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:36:53,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631865686] [2022-11-16 12:36:53,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:53,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:36:53,776 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:36:53,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [351042673] [2022-11-16 12:36:53,778 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-16 12:36:53,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:36:53,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:36:53,779 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:36:53,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 12:36:53,837 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-11-16 12:36:53,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:36:53,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-16 12:36:53,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:36:53,999 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 12 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:36:53,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:36:54,154 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:36:54,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:36:54,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631865686] [2022-11-16 12:36:54,155 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:36:54,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351042673] [2022-11-16 12:36:54,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351042673] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:36:54,155 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:36:54,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-16 12:36:54,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076535295] [2022-11-16 12:36:54,156 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:36:54,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:36:54,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:36:54,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:36:54,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:36:54,159 INFO L87 Difference]: Start difference. First operand 66 states and 77 transitions. Second operand has 18 states, 18 states have (on average 2.5) internal successors, (45), 18 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:54,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:36:54,247 INFO L93 Difference]: Finished difference Result 76 states and 85 transitions. [2022-11-16 12:36:54,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:36:54,248 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.5) internal successors, (45), 18 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-11-16 12:36:54,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:36:54,249 INFO L225 Difference]: With dead ends: 76 [2022-11-16 12:36:54,249 INFO L226 Difference]: Without dead ends: 49 [2022-11-16 12:36:54,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2022-11-16 12:36:54,251 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 10 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:36:54,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 354 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:36:54,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-11-16 12:36:54,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2022-11-16 12:36:54,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 36 states have (on average 1.0277777777777777) internal successors, (37), 37 states have internal predecessors, (37), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-16 12:36:54,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2022-11-16 12:36:54,277 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 27 [2022-11-16 12:36:54,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:36:54,278 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2022-11-16 12:36:54,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.5) internal successors, (45), 18 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:54,278 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2022-11-16 12:36:54,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-16 12:36:54,283 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:36:54,283 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:36:54,294 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 12:36:54,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-16 12:36:54,485 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:36:54,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:36:54,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1781630816, now seen corresponding path program 1 times [2022-11-16 12:36:54,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:36:54,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174043639] [2022-11-16 12:36:54,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:54,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:36:54,499 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:36:54,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1044090195] [2022-11-16 12:36:54,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:54,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:36:54,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:36:54,511 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:36:54,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 12:36:54,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:54,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-16 12:36:54,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:36:54,775 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 12:36:54,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:36:55,136 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 12:36:55,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:36:55,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174043639] [2022-11-16 12:36:55,136 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:36:55,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044090195] [2022-11-16 12:36:55,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1044090195] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:36:55,137 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:36:55,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-16 12:36:55,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066599872] [2022-11-16 12:36:55,137 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:36:55,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:36:55,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:36:55,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:36:55,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:36:55,138 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand has 18 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:36:56,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:36:56,441 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2022-11-16 12:36:56,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:36:56,441 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 28 [2022-11-16 12:36:56,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:36:56,442 INFO L225 Difference]: With dead ends: 49 [2022-11-16 12:36:56,442 INFO L226 Difference]: Without dead ends: 23 [2022-11-16 12:36:56,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=87, Invalid=419, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:36:56,443 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 14 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:36:56,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 419 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 12:36:56,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-16 12:36:56,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-11-16 12:36:56,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 14 states have (on average 1.0) internal successors, (14), 14 states have internal predecessors, (14), 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) [2022-11-16 12:36:56,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2022-11-16 12:36:56,446 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 28 [2022-11-16 12:36:56,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:36:56,447 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2022-11-16 12:36:56,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:36:56,447 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2022-11-16 12:36:56,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-16 12:36:56,448 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:36:56,448 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:36:56,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 12:36:56,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:36:56,651 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:36:56,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:36:56,651 INFO L85 PathProgramCache]: Analyzing trace with hash -21288017, now seen corresponding path program 1 times [2022-11-16 12:36:56,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:36:56,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553538655] [2022-11-16 12:36:56,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:56,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:36:56,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:36:56,674 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:36:56,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:36:56,709 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:36:56,710 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 12:36:56,711 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-11-16 12:36:56,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-11-16 12:36:56,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 12:36:56,716 INFO L444 BasicCegarLoop]: Path program histogram: [5, 1, 1, 1, 1, 1] [2022-11-16 12:36:56,720 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 12:36:56,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 12:36:56 BoogieIcfgContainer [2022-11-16 12:36:56,762 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 12:36:56,763 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 12:36:56,763 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 12:36:56,764 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 12:36:56,764 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:36:48" (3/4) ... [2022-11-16 12:36:56,767 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-16 12:36:56,768 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 12:36:56,768 INFO L158 Benchmark]: Toolchain (without parser) took 9557.51ms. Allocated memory was 132.1MB in the beginning and 159.4MB in the end (delta: 27.3MB). Free memory was 96.5MB in the beginning and 114.2MB in the end (delta: -17.7MB). Peak memory consumption was 9.4MB. Max. memory is 16.1GB. [2022-11-16 12:36:56,769 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 132.1MB. Free memory was 112.8MB in the beginning and 112.7MB in the end (delta: 74.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:36:56,770 INFO L158 Benchmark]: CACSL2BoogieTranslator took 307.41ms. Allocated memory is still 132.1MB. Free memory was 96.3MB in the beginning and 107.4MB in the end (delta: -11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 12:36:56,770 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.35ms. Allocated memory is still 132.1MB. Free memory was 107.4MB in the beginning and 105.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:36:56,770 INFO L158 Benchmark]: Boogie Preprocessor took 26.59ms. Allocated memory is still 132.1MB. Free memory was 105.8MB in the beginning and 104.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:36:56,771 INFO L158 Benchmark]: RCFGBuilder took 409.48ms. Allocated memory is still 132.1MB. Free memory was 104.1MB in the beginning and 92.0MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-16 12:36:56,771 INFO L158 Benchmark]: TraceAbstraction took 8759.50ms. Allocated memory was 132.1MB in the beginning and 159.4MB in the end (delta: 27.3MB). Free memory was 91.1MB in the beginning and 115.2MB in the end (delta: -24.1MB). Peak memory consumption was 3.6MB. Max. memory is 16.1GB. [2022-11-16 12:36:56,772 INFO L158 Benchmark]: Witness Printer took 4.61ms. Allocated memory is still 159.4MB. Free memory was 115.2MB in the beginning and 114.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:36:56,774 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 132.1MB. Free memory was 112.8MB in the beginning and 112.7MB in the end (delta: 74.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 307.41ms. Allocated memory is still 132.1MB. Free memory was 96.3MB in the beginning and 107.4MB in the end (delta: -11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.35ms. Allocated memory is still 132.1MB. Free memory was 107.4MB in the beginning and 105.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.59ms. Allocated memory is still 132.1MB. Free memory was 105.8MB in the beginning and 104.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 409.48ms. Allocated memory is still 132.1MB. Free memory was 104.1MB in the beginning and 92.0MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 8759.50ms. Allocated memory was 132.1MB in the beginning and 159.4MB in the end (delta: 27.3MB). Free memory was 91.1MB in the beginning and 115.2MB in the end (delta: -24.1MB). Peak memory consumption was 3.6MB. Max. memory is 16.1GB. * Witness Printer took 4.61ms. Allocated memory is still 159.4MB. Free memory was 115.2MB in the beginning and 114.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 109]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 98, overapproximation of someBinaryDOUBLEComparisonOperation at line 108, overapproximation of someBinaryArithmeticFLOAToperation at line 104. Possible FailurePath: [L115] COND FALSE !(__VERIFIER_nondet_int()) [L118] CALL main2() [L97] float IN = __VERIFIER_nondet_float(); [L98] CALL assume_abort_if_not(IN > -1.0f && IN < 1.0f) [L82] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L98] RET assume_abort_if_not(IN > -1.0f && IN < 1.0f) [L100] CALL, EXPR f(IN) VAL [\old(x)=116] [L87] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=116, x=116] [L100] RET, EXPR f(IN) VAL [f(IN)=110, IN=116] [L100] CALL, EXPR fp(IN) VAL [\old(x)=116] [L92] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=116, x=116] [L100] RET, EXPR fp(IN) VAL [f(IN)=110, fp(IN)=109, IN=116] [L100] float x = IN - f(IN)/fp(IN); [L102] CALL, EXPR f(x) VAL [\old(x)=111] [L87] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=111, x=111] [L102] RET, EXPR f(x) VAL [f(x)=117, IN=116, x=111] [L102] CALL, EXPR fp(x) VAL [\old(x)=111] [L92] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=111, x=111] [L102] RET, EXPR fp(x) VAL [f(x)=117, fp(x)=112, IN=116, x=111] [L102] x = x - f(x)/fp(x) [L104] CALL, EXPR f(x) VAL [\old(x)=114] [L87] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=114, x=114] [L104] RET, EXPR f(x) VAL [f(x)=113, IN=116, x=114] [L104] CALL, EXPR fp(x) VAL [\old(x)=114] [L92] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=114, x=114] [L104] RET, EXPR fp(x) VAL [f(x)=113, fp(x)=115, IN=116, x=114] [L104] x = x - f(x)/fp(x) [L108] COND TRUE !(x < 0.1) VAL [IN=116] [L109] reach_error() VAL [IN=116] - UnprovableResult [Line: 27]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 46 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 8.6s, OverallIterations: 10, TraceHistogramMax: 7, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 135 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 127 mSDsluCounter, 2317 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1948 mSDsCounter, 98 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 903 IncrementalHoareTripleChecker+Invalid, 1001 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 98 mSolverCounterUnsat, 369 mSDtfsCounter, 903 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 328 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=70occurred in iteration=6, InterpolantAutomatonStates: 73, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 21 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 234 NumberOfCodeBlocks, 230 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 304 ConstructedInterpolants, 0 QuantifiedInterpolants, 1589 SizeOfPredicates, 41 NumberOfNonLiveVariables, 809 ConjunctsInSsa, 113 ConjunctsInUnsatCore, 15 InterpolantComputations, 3 PerfectInterpolantSequences, 67/315 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-16 12:36:56,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 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_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_4+newton_3_5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8 --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 0c562931a6d05e325b28cce00e946abdf58c2b9fa526927c821e1aeeb79c8db9 --- 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-e04fb08 [2022-11-16 12:36:59,181 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:36:59,183 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:36:59,208 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:36:59,209 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:36:59,210 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:36:59,212 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:36:59,214 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:36:59,216 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:36:59,217 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:36:59,219 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:36:59,220 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:36:59,221 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:36:59,222 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:36:59,223 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:36:59,225 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:36:59,226 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:36:59,227 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:36:59,229 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:36:59,232 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:36:59,233 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:36:59,235 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:36:59,236 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:36:59,237 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:36:59,241 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:36:59,242 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:36:59,242 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:36:59,243 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:36:59,244 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:36:59,245 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:36:59,245 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:36:59,246 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:36:59,247 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:36:59,248 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:36:59,250 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:36:59,250 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:36:59,251 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:36:59,252 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:36:59,252 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:36:59,253 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:36:59,254 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:36:59,255 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-11-16 12:36:59,280 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:36:59,280 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:36:59,281 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:36:59,281 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:36:59,282 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:36:59,282 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:36:59,283 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:36:59,283 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:36:59,284 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:36:59,284 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:36:59,284 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:36:59,284 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:36:59,285 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:36:59,285 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:36:59,285 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:36:59,285 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:36:59,285 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 12:36:59,286 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-16 12:36:59,286 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-16 12:36:59,286 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:36:59,286 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:36:59,287 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:36:59,287 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:36:59,287 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:36:59,287 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:36:59,287 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:36:59,288 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:36:59,288 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:36:59,288 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:36:59,288 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:36:59,289 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-16 12:36:59,289 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-16 12:36:59,289 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:36:59,289 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:36:59,289 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:36:59,290 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-16 12:36:59,290 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_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c562931a6d05e325b28cce00e946abdf58c2b9fa526927c821e1aeeb79c8db9 [2022-11-16 12:36:59,648 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:36:59,690 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:36:59,699 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:36:59,700 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:36:59,701 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:36:59,703 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/combinations/gcd_4+newton_3_5.i [2022-11-16 12:36:59,775 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/data/4835a814a/fb652381feb3495a805bf0fa76fb9d28/FLAG5a859a30f [2022-11-16 12:37:00,369 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:37:00,372 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/sv-benchmarks/c/combinations/gcd_4+newton_3_5.i [2022-11-16 12:37:00,381 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/data/4835a814a/fb652381feb3495a805bf0fa76fb9d28/FLAG5a859a30f [2022-11-16 12:37:00,728 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/data/4835a814a/fb652381feb3495a805bf0fa76fb9d28 [2022-11-16 12:37:00,732 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:37:00,733 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:37:00,738 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:37:00,738 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:37:00,743 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:37:00,744 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:37:00" (1/1) ... [2022-11-16 12:37:00,747 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cafb124 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:00, skipping insertion in model container [2022-11-16 12:37:00,748 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:37:00" (1/1) ... [2022-11-16 12:37:00,759 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:37:00,779 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:37:00,922 WARN L229 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_25699d78-82c5-49f4-97d1-dace80925168/sv-benchmarks/c/combinations/gcd_4+newton_3_5.i[1224,1237] [2022-11-16 12:37:00,946 WARN L229 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_25699d78-82c5-49f4-97d1-dace80925168/sv-benchmarks/c/combinations/gcd_4+newton_3_5.i[2848,2861] [2022-11-16 12:37:00,948 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:37:00,960 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:37:00,988 WARN L229 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_25699d78-82c5-49f4-97d1-dace80925168/sv-benchmarks/c/combinations/gcd_4+newton_3_5.i[1224,1237] [2022-11-16 12:37:01,013 WARN L229 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_25699d78-82c5-49f4-97d1-dace80925168/sv-benchmarks/c/combinations/gcd_4+newton_3_5.i[2848,2861] [2022-11-16 12:37:01,014 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:37:01,048 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:37:01,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:01 WrapperNode [2022-11-16 12:37:01,049 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:37:01,050 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:37:01,050 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:37:01,050 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:37:01,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:01" (1/1) ... [2022-11-16 12:37:01,082 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:01" (1/1) ... [2022-11-16 12:37:01,117 INFO L138 Inliner]: procedures = 28, calls = 28, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 82 [2022-11-16 12:37:01,118 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:37:01,119 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:37:01,119 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:37:01,120 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:37:01,129 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:01" (1/1) ... [2022-11-16 12:37:01,130 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:01" (1/1) ... [2022-11-16 12:37:01,144 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:01" (1/1) ... [2022-11-16 12:37:01,144 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:01" (1/1) ... [2022-11-16 12:37:01,156 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:01" (1/1) ... [2022-11-16 12:37:01,159 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:01" (1/1) ... [2022-11-16 12:37:01,161 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:01" (1/1) ... [2022-11-16 12:37:01,163 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:01" (1/1) ... [2022-11-16 12:37:01,165 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:37:01,166 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:37:01,174 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:37:01,175 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:37:01,176 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:01" (1/1) ... [2022-11-16 12:37:01,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:37:01,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:37:01,212 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:37:01,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:37:01,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:37:01,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-16 12:37:01,258 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-11-16 12:37:01,259 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-11-16 12:37:01,259 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-11-16 12:37:01,259 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-11-16 12:37:01,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:37:01,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:37:01,259 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-16 12:37:01,260 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-16 12:37:01,383 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:37:01,385 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:37:12,257 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:37:12,265 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:37:12,266 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 12:37:12,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:37:12 BoogieIcfgContainer [2022-11-16 12:37:12,268 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:37:12,271 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:37:12,271 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:37:12,274 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:37:12,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:37:00" (1/3) ... [2022-11-16 12:37:12,276 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54a4bed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:37:12, skipping insertion in model container [2022-11-16 12:37:12,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:01" (2/3) ... [2022-11-16 12:37:12,276 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54a4bed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:37:12, skipping insertion in model container [2022-11-16 12:37:12,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:37:12" (3/3) ... [2022-11-16 12:37:12,278 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_4+newton_3_5.i [2022-11-16 12:37:12,300 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:37:12,301 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-16 12:37:12,356 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:37:12,364 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;@6a095ad6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:37:12,364 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-16 12:37:12,369 INFO L276 IsEmpty]: Start isEmpty. Operand has 46 states, 31 states have (on average 1.3870967741935485) internal successors, (43), 33 states have internal predecessors, (43), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-16 12:37:12,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 12:37:12,376 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:37:12,376 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:37:12,377 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:37:12,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:12,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1780387208, now seen corresponding path program 1 times [2022-11-16 12:37:12,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:37:12,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2100550422] [2022-11-16 12:37:12,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:12,395 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 [2022-11-16 12:37:12,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:37:12,407 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 12:37:12,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:37:12,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:12,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:37:12,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:37:12,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:37:12,618 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:37:12,619 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:37:12,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2100550422] [2022-11-16 12:37:12,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2100550422] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:37:12,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:37:12,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:37:12,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681075830] [2022-11-16 12:37:12,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:37:12,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:37:12,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:37:12,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:37:12,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:37:12,656 INFO L87 Difference]: Start difference. First operand has 46 states, 31 states have (on average 1.3870967741935485) internal successors, (43), 33 states have internal predecessors, (43), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:37:12,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:37:12,796 INFO L93 Difference]: Finished difference Result 99 states and 137 transitions. [2022-11-16 12:37:12,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:37:12,799 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-16 12:37:12,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:37:12,807 INFO L225 Difference]: With dead ends: 99 [2022-11-16 12:37:12,807 INFO L226 Difference]: Without dead ends: 46 [2022-11-16 12:37:12,811 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 [2022-11-16 12:37:12,814 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 13 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:37:12,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 100 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:37:12,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-11-16 12:37:12,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 39. [2022-11-16 12:37:12,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 25 states have (on average 1.2) internal successors, (30), 27 states have internal predecessors, (30), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 12:37:12,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2022-11-16 12:37:12,854 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 11 [2022-11-16 12:37:12,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:37:12,854 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2022-11-16 12:37:12,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:37:12,855 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2022-11-16 12:37:12,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-16 12:37:12,856 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:37:12,856 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:37:12,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:37:13,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:37:13,059 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:37:13,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:13,060 INFO L85 PathProgramCache]: Analyzing trace with hash 413718792, now seen corresponding path program 1 times [2022-11-16 12:37:13,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:37:13,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1843863010] [2022-11-16 12:37:13,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:13,061 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 [2022-11-16 12:37:13,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:37:13,063 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 12:37:13,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:37:13,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:13,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:37:13,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:37:13,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:37:13,279 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:37:13,279 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:37:13,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1843863010] [2022-11-16 12:37:13,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1843863010] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:37:13,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:37:13,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:37:13,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566943224] [2022-11-16 12:37:13,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:37:13,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:37:13,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:37:13,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:37:13,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:37:13,287 INFO L87 Difference]: Start difference. First operand 39 states and 47 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:37:13,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:37:13,400 INFO L93 Difference]: Finished difference Result 55 states and 68 transitions. [2022-11-16 12:37:13,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:37:13,401 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-16 12:37:13,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:37:13,403 INFO L225 Difference]: With dead ends: 55 [2022-11-16 12:37:13,403 INFO L226 Difference]: Without dead ends: 41 [2022-11-16 12:37:13,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:37:13,405 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 4 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:37:13,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 80 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:37:13,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-11-16 12:37:13,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-11-16 12:37:13,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 29 states have internal predecessors, (32), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 12:37:13,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2022-11-16 12:37:13,418 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 13 [2022-11-16 12:37:13,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:37:13,418 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2022-11-16 12:37:13,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:37:13,419 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2022-11-16 12:37:13,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-16 12:37:13,420 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:37:13,420 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:37:13,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:37:13,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:37:13,634 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:37:13,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:13,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1714945339, now seen corresponding path program 1 times [2022-11-16 12:37:13,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:37:13,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [246553929] [2022-11-16 12:37:13,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:13,636 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 [2022-11-16 12:37:13,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:37:13,638 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 12:37:13,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:37:13,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:13,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:37:13,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:37:13,966 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:37:13,966 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:37:13,967 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:37:13,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [246553929] [2022-11-16 12:37:13,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [246553929] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:37:13,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:37:13,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:37:13,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483342530] [2022-11-16 12:37:13,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:37:13,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:37:13,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:37:13,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:37:13,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:37:13,970 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:37:14,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:37:14,057 INFO L93 Difference]: Finished difference Result 56 states and 68 transitions. [2022-11-16 12:37:14,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:37:14,058 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-16 12:37:14,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:37:14,059 INFO L225 Difference]: With dead ends: 56 [2022-11-16 12:37:14,059 INFO L226 Difference]: Without dead ends: 43 [2022-11-16 12:37:14,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:37:14,061 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 0 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:37:14,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 78 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:37:14,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-16 12:37:14,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-11-16 12:37:14,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 31 states have internal predecessors, (34), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 12:37:14,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions. [2022-11-16 12:37:14,071 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 51 transitions. Word has length 15 [2022-11-16 12:37:14,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:37:14,072 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 51 transitions. [2022-11-16 12:37:14,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:37:14,072 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2022-11-16 12:37:14,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-16 12:37:14,073 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:37:14,073 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:37:14,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:37:14,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:37:14,287 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:37:14,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:14,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1030187394, now seen corresponding path program 1 times [2022-11-16 12:37:14,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:37:14,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1993073743] [2022-11-16 12:37:14,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:14,289 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 [2022-11-16 12:37:14,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:37:14,295 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 12:37:14,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:37:14,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:14,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:37:14,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:37:14,758 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:37:14,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:37:15,008 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:37:15,009 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:37:15,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1993073743] [2022-11-16 12:37:15,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1993073743] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:37:15,010 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:37:15,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-11-16 12:37:15,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231830371] [2022-11-16 12:37:15,011 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:37:15,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:37:15,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:37:15,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:37:15,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:37:15,013 INFO L87 Difference]: Start difference. First operand 43 states and 51 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:37:15,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:37:15,217 INFO L93 Difference]: Finished difference Result 60 states and 73 transitions. [2022-11-16 12:37:15,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:37:15,220 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-16 12:37:15,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:37:15,221 INFO L225 Difference]: With dead ends: 60 [2022-11-16 12:37:15,221 INFO L226 Difference]: Without dead ends: 47 [2022-11-16 12:37:15,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:37:15,223 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 3 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:37:15,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 115 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:37:15,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-11-16 12:37:15,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2022-11-16 12:37:15,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 35 states have internal predecessors, (38), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 12:37:15,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2022-11-16 12:37:15,243 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 17 [2022-11-16 12:37:15,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:37:15,244 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2022-11-16 12:37:15,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:37:15,244 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2022-11-16 12:37:15,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-16 12:37:15,245 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:37:15,245 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:37:15,262 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/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)] Forceful destruction successful, exit code 0 [2022-11-16 12:37:15,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:37:15,447 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:37:15,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:15,448 INFO L85 PathProgramCache]: Analyzing trace with hash -626272964, now seen corresponding path program 2 times [2022-11-16 12:37:15,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:37:15,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [738282936] [2022-11-16 12:37:15,448 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:37:15,448 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 [2022-11-16 12:37:15,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:37:15,450 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 12:37:15,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:37:15,564 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:37:15,564 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:37:15,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-16 12:37:15,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:37:16,985 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:37:16,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:37:24,911 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:37:24,911 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:37:24,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [738282936] [2022-11-16 12:37:24,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [738282936] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:37:24,912 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:37:24,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-16 12:37:24,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81956297] [2022-11-16 12:37:24,912 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:37:24,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:37:24,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:37:24,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:37:24,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:37:24,914 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand has 18 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:37:46,916 WARN L233 SmtUtils]: Spent 7.34s on a formula simplification that was a NOOP. DAG size: 21 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:38:05,358 WARN L233 SmtUtils]: Spent 9.98s on a formula simplification that was a NOOP. DAG size: 24 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:38:22,427 WARN L233 SmtUtils]: Spent 10.96s on a formula simplification that was a NOOP. DAG size: 27 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:38:26,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:38:26,765 INFO L93 Difference]: Finished difference Result 71 states and 88 transitions. [2022-11-16 12:38:26,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 12:38:26,799 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-16 12:38:26,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:38:26,801 INFO L225 Difference]: With dead ends: 71 [2022-11-16 12:38:26,801 INFO L226 Difference]: Without dead ends: 68 [2022-11-16 12:38:26,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 60.3s TimeCoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2022-11-16 12:38:26,803 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 34 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:38:26,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 406 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2022-11-16 12:38:26,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-11-16 12:38:26,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2022-11-16 12:38:26,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 48 states have (on average 1.2291666666666667) internal successors, (59), 52 states have internal predecessors, (59), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-16 12:38:26,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 81 transitions. [2022-11-16 12:38:26,818 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 81 transitions. Word has length 21 [2022-11-16 12:38:26,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:38:26,818 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 81 transitions. [2022-11-16 12:38:26,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:38:26,819 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 81 transitions. [2022-11-16 12:38:26,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-16 12:38:26,820 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:38:26,820 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:38:26,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:38:27,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:38:27,035 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:38:27,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:27,036 INFO L85 PathProgramCache]: Analyzing trace with hash -311360839, now seen corresponding path program 3 times [2022-11-16 12:38:27,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:38:27,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1908826704] [2022-11-16 12:38:27,036 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:38:27,036 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 [2022-11-16 12:38:27,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:38:27,037 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 12:38:27,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:38:27,159 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-16 12:38:27,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:38:27,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 12:38:27,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:38:27,223 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-16 12:38:27,223 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:38:27,223 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:38:27,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1908826704] [2022-11-16 12:38:27,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1908826704] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:38:27,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:38:27,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:38:27,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485539222] [2022-11-16 12:38:27,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:38:27,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:38:27,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:38:27,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:38:27,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:38:27,226 INFO L87 Difference]: Start difference. First operand 66 states and 81 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:38:27,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:38:27,297 INFO L93 Difference]: Finished difference Result 78 states and 95 transitions. [2022-11-16 12:38:27,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:38:27,302 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-16 12:38:27,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:38:27,304 INFO L225 Difference]: With dead ends: 78 [2022-11-16 12:38:27,305 INFO L226 Difference]: Without dead ends: 67 [2022-11-16 12:38:27,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:38:27,306 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 3 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:38:27,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 80 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:38:27,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-11-16 12:38:27,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 64. [2022-11-16 12:38:27,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 50 states have internal predecessors, (55), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-16 12:38:27,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 77 transitions. [2022-11-16 12:38:27,333 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 77 transitions. Word has length 23 [2022-11-16 12:38:27,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:38:27,334 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 77 transitions. [2022-11-16 12:38:27,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:38:27,334 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 77 transitions. [2022-11-16 12:38:27,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-16 12:38:27,340 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:38:27,340 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:38:27,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/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)] Forceful destruction successful, exit code 0 [2022-11-16 12:38:27,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:38:27,554 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:38:27,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:27,554 INFO L85 PathProgramCache]: Analyzing trace with hash 603968502, now seen corresponding path program 4 times [2022-11-16 12:38:27,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:38:27,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [56011744] [2022-11-16 12:38:27,555 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 12:38:27,555 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 [2022-11-16 12:38:27,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:38:27,556 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 12:38:27,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/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 (8)] Waiting until timeout for monitored process [2022-11-16 12:38:27,634 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 12:38:27,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:38:27,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 12:38:27,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:38:28,283 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 12:38:28,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:38:29,028 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 12:38:29,028 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:38:29,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [56011744] [2022-11-16 12:38:29,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [56011744] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:38:29,029 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:38:29,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-11-16 12:38:29,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161070898] [2022-11-16 12:38:29,029 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:38:29,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:38:29,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:38:29,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:38:29,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:38:29,030 INFO L87 Difference]: Start difference. First operand 64 states and 77 transitions. Second operand has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:38:30,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:38:30,020 INFO L93 Difference]: Finished difference Result 88 states and 106 transitions. [2022-11-16 12:38:30,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:38:30,030 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-16 12:38:30,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:38:30,031 INFO L225 Difference]: With dead ends: 88 [2022-11-16 12:38:30,031 INFO L226 Difference]: Without dead ends: 64 [2022-11-16 12:38:30,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:38:30,033 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 12 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:38:30,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 263 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 12:38:30,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-11-16 12:38:30,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 60. [2022-11-16 12:38:30,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 43 states have (on average 1.1627906976744187) internal successors, (50), 46 states have internal predecessors, (50), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-16 12:38:30,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 70 transitions. [2022-11-16 12:38:30,045 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 70 transitions. Word has length 25 [2022-11-16 12:38:30,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:38:30,046 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 70 transitions. [2022-11-16 12:38:30,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:38:30,046 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 70 transitions. [2022-11-16 12:38:30,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-16 12:38:30,047 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:38:30,047 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:38:30,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/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 (8)] Forceful destruction successful, exit code 0 [2022-11-16 12:38:30,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:38:30,248 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:38:30,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:30,248 INFO L85 PathProgramCache]: Analyzing trace with hash 225362363, now seen corresponding path program 1 times [2022-11-16 12:38:30,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:38:30,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1263123897] [2022-11-16 12:38:30,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:30,249 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 [2022-11-16 12:38:30,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:38:30,250 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 12:38:30,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/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 (9)] Waiting until timeout for monitored process [2022-11-16 12:38:30,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:30,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 12:38:30,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:38:31,080 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:38:31,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:38:31,738 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:38:31,738 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:38:31,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1263123897] [2022-11-16 12:38:31,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1263123897] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:38:31,738 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:38:31,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-11-16 12:38:31,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879727190] [2022-11-16 12:38:31,739 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:38:31,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:38:31,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:38:31,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:38:31,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:38:31,740 INFO L87 Difference]: Start difference. First operand 60 states and 70 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 12:38:32,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:38:32,491 INFO L93 Difference]: Finished difference Result 74 states and 83 transitions. [2022-11-16 12:38:32,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:38:32,493 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2022-11-16 12:38:32,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:38:32,494 INFO L225 Difference]: With dead ends: 74 [2022-11-16 12:38:32,494 INFO L226 Difference]: Without dead ends: 60 [2022-11-16 12:38:32,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:38:32,495 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 17 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:38:32,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 264 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 63 Invalid, 0 Unknown, 14 Unchecked, 0.4s Time] [2022-11-16 12:38:32,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-11-16 12:38:32,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2022-11-16 12:38:32,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 43 states have (on average 1.1395348837209303) internal successors, (49), 46 states have internal predecessors, (49), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-16 12:38:32,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 69 transitions. [2022-11-16 12:38:32,508 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 69 transitions. Word has length 26 [2022-11-16 12:38:32,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:38:32,508 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 69 transitions. [2022-11-16 12:38:32,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 12:38:32,509 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 69 transitions. [2022-11-16 12:38:32,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-16 12:38:32,510 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:38:32,510 INFO L195 NwaCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:38:32,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/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 (9)] Forceful destruction successful, exit code 0 [2022-11-16 12:38:32,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:38:32,723 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:38:32,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:32,723 INFO L85 PathProgramCache]: Analyzing trace with hash -334589841, now seen corresponding path program 5 times [2022-11-16 12:38:32,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:38:32,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [471990768] [2022-11-16 12:38:32,724 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-16 12:38:32,724 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 [2022-11-16 12:38:32,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:38:32,725 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 12:38:32,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/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 (10)] Waiting until timeout for monitored process [2022-11-16 12:38:32,831 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-11-16 12:38:32,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:38:32,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 12:38:32,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:38:33,967 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 13 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:38:33,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:38:36,850 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 21 proven. 27 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:38:36,850 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:38:36,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [471990768] [2022-11-16 12:38:36,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [471990768] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:38:36,851 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:38:36,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2022-11-16 12:38:36,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506019452] [2022-11-16 12:38:36,851 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:38:36,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-16 12:38:36,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:38:36,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-16 12:38:36,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:38:36,852 INFO L87 Difference]: Start difference. First operand 60 states and 69 transitions. Second operand has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:38:37,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:38:37,774 INFO L93 Difference]: Finished difference Result 75 states and 84 transitions. [2022-11-16 12:38:37,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:38:37,781 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-11-16 12:38:37,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:38:37,782 INFO L225 Difference]: With dead ends: 75 [2022-11-16 12:38:37,782 INFO L226 Difference]: Without dead ends: 49 [2022-11-16 12:38:37,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:38:37,784 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 11 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-16 12:38:37,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 307 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-16 12:38:37,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-11-16 12:38:37,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2022-11-16 12:38:37,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 36 states have (on average 1.0277777777777777) internal successors, (37), 37 states have internal predecessors, (37), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-16 12:38:37,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2022-11-16 12:38:37,794 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 27 [2022-11-16 12:38:37,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:38:37,795 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2022-11-16 12:38:37,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:38:37,795 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2022-11-16 12:38:37,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-16 12:38:37,796 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:38:37,796 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:38:37,814 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/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 (10)] Ended with exit code 0 [2022-11-16 12:38:38,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:38:38,010 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:38:38,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:38,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1781630816, now seen corresponding path program 2 times [2022-11-16 12:38:38,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:38:38,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [378711977] [2022-11-16 12:38:38,011 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:38:38,011 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 [2022-11-16 12:38:38,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:38:38,012 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 12:38:38,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/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 (11)] Waiting until timeout for monitored process [2022-11-16 12:38:38,178 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:38:38,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:38:38,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-16 12:38:38,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:38:39,572 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 12:38:39,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:38:48,763 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 12:38:48,763 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:38:48,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [378711977] [2022-11-16 12:38:48,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [378711977] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:38:48,764 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:38:48,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-16 12:38:48,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741367791] [2022-11-16 12:38:48,764 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:38:48,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:38:48,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:38:48,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:38:48,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:38:48,766 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand has 18 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:38:59,138 WARN L233 SmtUtils]: Spent 5.47s on a formula simplification. DAG size of input: 26 DAG size of output: 21 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:39:11,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:39:11,187 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2022-11-16 12:39:11,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:39:11,188 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 28 [2022-11-16 12:39:11,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:39:11,188 INFO L225 Difference]: With dead ends: 49 [2022-11-16 12:39:11,189 INFO L226 Difference]: Without dead ends: 23 [2022-11-16 12:39:11,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 26.6s TimeCoverageRelationStatistics Valid=87, Invalid=419, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:39:11,190 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 14 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:39:11,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 389 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-16 12:39:11,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-16 12:39:11,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-11-16 12:39:11,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 14 states have (on average 1.0) internal successors, (14), 14 states have internal predecessors, (14), 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) [2022-11-16 12:39:11,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2022-11-16 12:39:11,194 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 28 [2022-11-16 12:39:11,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:39:11,194 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2022-11-16 12:39:11,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:39:11,194 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2022-11-16 12:39:11,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-16 12:39:11,195 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:39:11,195 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:39:11,217 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/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 (11)] Forceful destruction successful, exit code 0 [2022-11-16 12:39:11,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/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 [2022-11-16 12:39:11,416 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:39:11,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:39:11,417 INFO L85 PathProgramCache]: Analyzing trace with hash -21288017, now seen corresponding path program 1 times [2022-11-16 12:39:11,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:39:11,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [372824982] [2022-11-16 12:39:11,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:11,418 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 [2022-11-16 12:39:11,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:39:11,419 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/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) [2022-11-16 12:39:11,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25699d78-82c5-49f4-97d1-dace80925168/bin/uautomizer-tPACEb0tL8/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 (12)] Waiting until timeout for monitored process