./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-examples/standard_partition_ground-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cee8300-07ae-494a-8301-e62caf94a753/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cee8300-07ae-494a-8301-e62caf94a753/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cee8300-07ae-494a-8301-e62caf94a753/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cee8300-07ae-494a-8301-e62caf94a753/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-examples/standard_partition_ground-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cee8300-07ae-494a-8301-e62caf94a753/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cee8300-07ae-494a-8301-e62caf94a753/bin/uautomizer-J5u9QxTXDZ --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 6c4a57140d9977d38b2a20d40c88df51a4fcb7b14a0fb7c51e0b4e36cddf9998 --- 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-dbf71c6-m [2022-10-17 10:29:48,129 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:29:48,132 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:29:48,182 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:29:48,183 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:29:48,186 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:29:48,189 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:29:48,198 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:29:48,201 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:29:48,202 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:29:48,204 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:29:48,209 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:29:48,210 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:29:48,214 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:29:48,218 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:29:48,222 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:29:48,225 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:29:48,227 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:29:48,235 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:29:48,238 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:29:48,240 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:29:48,247 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:29:48,249 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:29:48,251 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:29:48,261 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:29:48,262 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:29:48,262 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:29:48,265 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:29:48,266 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:29:48,267 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:29:48,269 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:29:48,270 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:29:48,273 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:29:48,274 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:29:48,278 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:29:48,278 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:29:48,279 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:29:48,279 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:29:48,280 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:29:48,281 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:29:48,281 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:29:48,282 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cee8300-07ae-494a-8301-e62caf94a753/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:29:48,348 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:29:48,348 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:29:48,349 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:29:48,349 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:29:48,350 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:29:48,351 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:29:48,351 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:29:48,352 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:29:48,352 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:29:48,352 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:29:48,354 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:29:48,354 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:29:48,355 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:29:48,355 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:29:48,355 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:29:48,355 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:29:48,356 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:29:48,356 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:29:48,356 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:29:48,356 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:29:48,357 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:29:48,357 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:29:48,357 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:29:48,357 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:29:48,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:29:48,358 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:29:48,358 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:29:48,359 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:29:48,359 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:29:48,359 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:29:48,359 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:29:48,360 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:29:48,360 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:29:48,360 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_8cee8300-07ae-494a-8301-e62caf94a753/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cee8300-07ae-494a-8301-e62caf94a753/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6c4a57140d9977d38b2a20d40c88df51a4fcb7b14a0fb7c51e0b4e36cddf9998 [2022-10-17 10:29:48,646 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:29:48,670 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:29:48,673 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:29:48,675 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:29:48,676 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:29:48,677 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cee8300-07ae-494a-8301-e62caf94a753/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/array-examples/standard_partition_ground-1.i [2022-10-17 10:29:48,752 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cee8300-07ae-494a-8301-e62caf94a753/bin/uautomizer-J5u9QxTXDZ/data/7e0215698/6a86db643d95484194a64d196520afdd/FLAGda8d19ad3 [2022-10-17 10:29:49,257 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:29:49,266 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cee8300-07ae-494a-8301-e62caf94a753/sv-benchmarks/c/array-examples/standard_partition_ground-1.i [2022-10-17 10:29:49,274 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cee8300-07ae-494a-8301-e62caf94a753/bin/uautomizer-J5u9QxTXDZ/data/7e0215698/6a86db643d95484194a64d196520afdd/FLAGda8d19ad3 [2022-10-17 10:29:49,598 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cee8300-07ae-494a-8301-e62caf94a753/bin/uautomizer-J5u9QxTXDZ/data/7e0215698/6a86db643d95484194a64d196520afdd [2022-10-17 10:29:49,601 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:29:49,603 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:29:49,605 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:29:49,605 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:29:49,609 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:29:49,610 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:29:49" (1/1) ... [2022-10-17 10:29:49,612 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@102bca02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:29:49, skipping insertion in model container [2022-10-17 10:29:49,612 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:29:49" (1/1) ... [2022-10-17 10:29:49,622 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:29:49,641 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:29:49,893 WARN L230 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_8cee8300-07ae-494a-8301-e62caf94a753/sv-benchmarks/c/array-examples/standard_partition_ground-1.i[860,873] [2022-10-17 10:29:49,915 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:29:49,924 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:29:49,937 WARN L230 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_8cee8300-07ae-494a-8301-e62caf94a753/sv-benchmarks/c/array-examples/standard_partition_ground-1.i[860,873] [2022-10-17 10:29:49,947 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:29:49,962 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:29:49,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:29:49 WrapperNode [2022-10-17 10:29:49,962 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:29:49,963 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:29:49,964 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:29:49,964 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:29:49,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:29:49" (1/1) ... [2022-10-17 10:29:49,997 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:29:49" (1/1) ... [2022-10-17 10:29:50,031 INFO L138 Inliner]: procedures = 16, calls = 26, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 82 [2022-10-17 10:29:50,032 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:29:50,033 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:29:50,034 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:29:50,034 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:29:50,045 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:29:49" (1/1) ... [2022-10-17 10:29:50,045 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:29:49" (1/1) ... [2022-10-17 10:29:50,051 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:29:49" (1/1) ... [2022-10-17 10:29:50,052 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:29:49" (1/1) ... [2022-10-17 10:29:50,071 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:29:49" (1/1) ... [2022-10-17 10:29:50,077 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:29:49" (1/1) ... [2022-10-17 10:29:50,079 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:29:49" (1/1) ... [2022-10-17 10:29:50,080 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:29:49" (1/1) ... [2022-10-17 10:29:50,083 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:29:50,084 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:29:50,085 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:29:50,085 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:29:50,086 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:29:49" (1/1) ... [2022-10-17 10:29:50,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:29:50,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cee8300-07ae-494a-8301-e62caf94a753/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:29:50,123 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cee8300-07ae-494a-8301-e62caf94a753/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:29:50,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cee8300-07ae-494a-8301-e62caf94a753/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:29:50,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:29:50,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:29:50,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:29:50,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:29:50,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:29:50,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:29:50,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:29:50,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-10-17 10:29:50,195 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-10-17 10:29:50,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:29:50,279 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:29:50,281 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:29:50,462 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:29:50,476 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:29:50,477 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-10-17 10:29:50,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:29:50 BoogieIcfgContainer [2022-10-17 10:29:50,479 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:29:50,481 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:29:50,481 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:29:50,501 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:29:50,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:29:49" (1/3) ... [2022-10-17 10:29:50,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74359cfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:29:50, skipping insertion in model container [2022-10-17 10:29:50,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:29:49" (2/3) ... [2022-10-17 10:29:50,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74359cfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:29:50, skipping insertion in model container [2022-10-17 10:29:50,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:29:50" (3/3) ... [2022-10-17 10:29:50,504 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_partition_ground-1.i [2022-10-17 10:29:50,536 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:29:50,536 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:29:50,590 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:29:50,600 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;@73d46331, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:29:50,600 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:29:50,605 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 24 states have (on average 1.5) internal successors, (36), 25 states have internal predecessors, (36), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:29:50,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-10-17 10:29:50,615 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:29:50,616 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:29:50,616 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:29:50,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:29:50,623 INFO L85 PathProgramCache]: Analyzing trace with hash 25564738, now seen corresponding path program 1 times [2022-10-17 10:29:50,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:29:50,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428951891] [2022-10-17 10:29:50,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:29:50,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:29:50,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:29:50,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:29:50,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:29:50,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428951891] [2022-10-17 10:29:50,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428951891] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:29:50,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:29:50,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:29:50,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459653600] [2022-10-17 10:29:50,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:29:50,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 10:29:50,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:29:50,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 10:29:50,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:29:50,879 INFO L87 Difference]: Start difference. First operand has 29 states, 24 states have (on average 1.5) internal successors, (36), 25 states have internal predecessors, (36), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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) [2022-10-17 10:29:50,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:29:50,906 INFO L93 Difference]: Finished difference Result 53 states and 74 transitions. [2022-10-17 10:29:50,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 10:29:50,908 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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 [2022-10-17 10:29:50,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:29:50,947 INFO L225 Difference]: With dead ends: 53 [2022-10-17 10:29:50,947 INFO L226 Difference]: Without dead ends: 25 [2022-10-17 10:29:50,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:29:50,985 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:29:50,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:29:51,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-10-17 10:29:51,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-10-17 10:29:51,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:29:51,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2022-10-17 10:29:51,044 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 11 [2022-10-17 10:29:51,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:29:51,045 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2022-10-17 10:29:51,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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) [2022-10-17 10:29:51,045 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2022-10-17 10:29:51,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-10-17 10:29:51,046 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:29:51,046 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:29:51,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:29:51,047 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:29:51,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:29:51,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1555088748, now seen corresponding path program 1 times [2022-10-17 10:29:51,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:29:51,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172604686] [2022-10-17 10:29:51,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:29:51,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:29:51,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:29:51,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:29:51,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:29:51,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172604686] [2022-10-17 10:29:51,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172604686] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:29:51,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:29:51,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:29:51,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116081096] [2022-10-17 10:29:51,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:29:51,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:29:51,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:29:51,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:29:51,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:29:51,231 INFO L87 Difference]: Start difference. First operand 25 states and 31 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) [2022-10-17 10:29:51,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:29:51,307 INFO L93 Difference]: Finished difference Result 51 states and 65 transitions. [2022-10-17 10:29:51,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:29:51,308 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 [2022-10-17 10:29:51,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:29:51,309 INFO L225 Difference]: With dead ends: 51 [2022-10-17 10:29:51,309 INFO L226 Difference]: Without dead ends: 31 [2022-10-17 10:29:51,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:29:51,312 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 6 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:29:51,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 46 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:29:51,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-10-17 10:29:51,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 27. [2022-10-17 10:29:51,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 23 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:29:51,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2022-10-17 10:29:51,321 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 11 [2022-10-17 10:29:51,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:29:51,321 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2022-10-17 10:29:51,321 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) [2022-10-17 10:29:51,322 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2022-10-17 10:29:51,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-10-17 10:29:51,322 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:29:51,323 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:29:51,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:29:51,323 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:29:51,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:29:51,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1378811952, now seen corresponding path program 1 times [2022-10-17 10:29:51,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:29:51,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588121606] [2022-10-17 10:29:51,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:29:51,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:29:51,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:29:51,503 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 10:29:51,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:29:51,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588121606] [2022-10-17 10:29:51,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588121606] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:29:51,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818990658] [2022-10-17 10:29:51,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:29:51,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:29:51,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cee8300-07ae-494a-8301-e62caf94a753/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:29:51,522 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cee8300-07ae-494a-8301-e62caf94a753/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:29:51,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cee8300-07ae-494a-8301-e62caf94a753/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 10:29:51,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:29:51,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 10:29:51,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:29:51,774 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 10:29:51,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:29:51,802 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 10:29:51,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818990658] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:29:51,803 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:29:51,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-10-17 10:29:51,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888246989] [2022-10-17 10:29:51,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:29:51,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:29:51,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:29:51,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:29:51,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:29:51,806 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 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) [2022-10-17 10:29:51,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:29:51,906 INFO L93 Difference]: Finished difference Result 66 states and 88 transitions. [2022-10-17 10:29:51,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 10:29:51,907 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 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 [2022-10-17 10:29:51,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:29:51,908 INFO L225 Difference]: With dead ends: 66 [2022-10-17 10:29:51,908 INFO L226 Difference]: Without dead ends: 45 [2022-10-17 10:29:51,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:29:51,914 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 28 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:29:51,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 90 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:29:51,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-10-17 10:29:51,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2022-10-17 10:29:51,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 41 states have (on average 1.2926829268292683) internal successors, (53), 41 states have internal predecessors, (53), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:29:51,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 57 transitions. [2022-10-17 10:29:51,937 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 57 transitions. Word has length 17 [2022-10-17 10:29:51,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:29:51,938 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 57 transitions. [2022-10-17 10:29:51,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 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) [2022-10-17 10:29:51,939 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 57 transitions. [2022-10-17 10:29:51,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-10-17 10:29:51,940 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:29:51,940 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:29:51,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cee8300-07ae-494a-8301-e62caf94a753/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 10:29:52,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cee8300-07ae-494a-8301-e62caf94a753/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:29:52,166 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:29:52,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:29:52,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1056905748, now seen corresponding path program 2 times [2022-10-17 10:29:52,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:29:52,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783756598] [2022-10-17 10:29:52,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:29:52,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:29:52,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:29:52,484 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-10-17 10:29:52,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:29:52,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783756598] [2022-10-17 10:29:52,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783756598] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:29:52,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:29:52,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:29:52,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351510314] [2022-10-17 10:29:52,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:29:52,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:29:52,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:29:52,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:29:52,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:29:52,495 INFO L87 Difference]: Start difference. First operand 45 states and 57 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2022-10-17 10:29:52,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:29:52,557 INFO L93 Difference]: Finished difference Result 96 states and 122 transitions. [2022-10-17 10:29:52,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:29:52,558 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 35 [2022-10-17 10:29:52,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:29:52,561 INFO L225 Difference]: With dead ends: 96 [2022-10-17 10:29:52,563 INFO L226 Difference]: Without dead ends: 81 [2022-10-17 10:29:52,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:29:52,565 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 8 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:29:52,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 79 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:29:52,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-10-17 10:29:52,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 72. [2022-10-17 10:29:52,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 68 states have (on average 1.3088235294117647) internal successors, (89), 68 states have internal predecessors, (89), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:29:52,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 93 transitions. [2022-10-17 10:29:52,581 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 93 transitions. Word has length 35 [2022-10-17 10:29:52,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:29:52,582 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 93 transitions. [2022-10-17 10:29:52,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2022-10-17 10:29:52,582 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 93 transitions. [2022-10-17 10:29:52,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-10-17 10:29:52,584 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:29:52,584 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:29:52,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:29:52,585 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:29:52,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:29:52,586 INFO L85 PathProgramCache]: Analyzing trace with hash 748532586, now seen corresponding path program 1 times [2022-10-17 10:29:52,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:29:52,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035405952] [2022-10-17 10:29:52,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:29:52,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:29:52,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:29:52,801 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-10-17 10:29:52,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:29:52,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035405952] [2022-10-17 10:29:52,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035405952] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:29:52,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064060859] [2022-10-17 10:29:52,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:29:52,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:29:52,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cee8300-07ae-494a-8301-e62caf94a753/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:29:52,803 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cee8300-07ae-494a-8301-e62caf94a753/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:29:52,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cee8300-07ae-494a-8301-e62caf94a753/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-17 10:29:52,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:29:52,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-17 10:29:52,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:29:52,964 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-10-17 10:29:52,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:29:53,090 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-10-17 10:29:53,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064060859] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:29:53,092 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:29:53,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-10-17 10:29:53,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557453288] [2022-10-17 10:29:53,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:29:53,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-10-17 10:29:53,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:29:53,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-10-17 10:29:53,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-10-17 10:29:53,102 INFO L87 Difference]: Start difference. First operand 72 states and 93 transitions. Second operand has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 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) [2022-10-17 10:29:53,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:29:53,321 INFO L93 Difference]: Finished difference Result 190 states and 271 transitions. [2022-10-17 10:29:53,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-17 10:29:53,323 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 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 35 [2022-10-17 10:29:53,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:29:53,333 INFO L225 Difference]: With dead ends: 190 [2022-10-17 10:29:53,333 INFO L226 Difference]: Without dead ends: 144 [2022-10-17 10:29:53,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-10-17 10:29:53,337 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 101 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:29:53,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 159 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:29:53,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-10-17 10:29:53,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2022-10-17 10:29:53,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 140 states have (on average 1.3214285714285714) internal successors, (185), 140 states have internal predecessors, (185), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:29:53,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 189 transitions. [2022-10-17 10:29:53,366 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 189 transitions. Word has length 35 [2022-10-17 10:29:53,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:29:53,366 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 189 transitions. [2022-10-17 10:29:53,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 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) [2022-10-17 10:29:53,367 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 189 transitions. [2022-10-17 10:29:53,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-10-17 10:29:53,370 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:29:53,371 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:29:53,409 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cee8300-07ae-494a-8301-e62caf94a753/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-17 10:29:53,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cee8300-07ae-494a-8301-e62caf94a753/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:29:53,590 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:29:53,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:29:53,591 INFO L85 PathProgramCache]: Analyzing trace with hash -737484630, now seen corresponding path program 2 times [2022-10-17 10:29:53,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:29:53,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372108699] [2022-10-17 10:29:53,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:29:53,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:29:53,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:29:54,052 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-10-17 10:29:54,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:29:54,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372108699] [2022-10-17 10:29:54,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372108699] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:29:54,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621571017] [2022-10-17 10:29:54,053 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-17 10:29:54,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:29:54,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cee8300-07ae-494a-8301-e62caf94a753/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:29:54,058 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cee8300-07ae-494a-8301-e62caf94a753/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:29:54,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cee8300-07ae-494a-8301-e62caf94a753/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-17 10:29:54,202 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-17 10:29:54,203 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:29:54,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 12 conjunts are in the unsatisfiable core [2022-10-17 10:29:54,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:29:54,327 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-10-17 10:29:54,328 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:29:54,645 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-10-17 10:29:54,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621571017] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:29:54,646 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:29:54,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2022-10-17 10:29:54,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948478605] [2022-10-17 10:29:54,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:29:54,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-10-17 10:29:54,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:29:54,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-10-17 10:29:54,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-10-17 10:29:54,655 INFO L87 Difference]: Start difference. First operand 144 states and 189 transitions. Second operand has 25 states, 25 states have (on average 3.16) internal successors, (79), 25 states have internal predecessors, (79), 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) [2022-10-17 10:29:55,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:29:55,043 INFO L93 Difference]: Finished difference Result 370 states and 535 transitions. [2022-10-17 10:29:55,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-10-17 10:29:55,046 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.16) internal successors, (79), 25 states have internal predecessors, (79), 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 71 [2022-10-17 10:29:55,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:29:55,049 INFO L225 Difference]: With dead ends: 370 [2022-10-17 10:29:55,050 INFO L226 Difference]: Without dead ends: 288 [2022-10-17 10:29:55,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-10-17 10:29:55,055 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 304 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-17 10:29:55,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 143 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-17 10:29:55,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2022-10-17 10:29:55,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2022-10-17 10:29:55,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 284 states have (on average 1.3274647887323943) internal successors, (377), 284 states have internal predecessors, (377), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:29:55,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 381 transitions. [2022-10-17 10:29:55,124 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 381 transitions. Word has length 71 [2022-10-17 10:29:55,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:29:55,127 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 381 transitions. [2022-10-17 10:29:55,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.16) internal successors, (79), 25 states have internal predecessors, (79), 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) [2022-10-17 10:29:55,127 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 381 transitions. [2022-10-17 10:29:55,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-10-17 10:29:55,140 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:29:55,140 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:29:55,168 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cee8300-07ae-494a-8301-e62caf94a753/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-10-17 10:29:55,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cee8300-07ae-494a-8301-e62caf94a753/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-10-17 10:29:55,341 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:29:55,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:29:55,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1759255338, now seen corresponding path program 3 times [2022-10-17 10:29:55,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:29:55,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077246203] [2022-10-17 10:29:55,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:29:55,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:29:55,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:29:56,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1430 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2022-10-17 10:29:56,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:29:56,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077246203] [2022-10-17 10:29:56,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077246203] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:29:56,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782097184] [2022-10-17 10:29:56,696 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-17 10:29:56,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:29:56,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cee8300-07ae-494a-8301-e62caf94a753/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:29:56,702 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cee8300-07ae-494a-8301-e62caf94a753/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:29:56,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cee8300-07ae-494a-8301-e62caf94a753/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process