./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product40.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product40.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y --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 77b56c936ee2ca54668f40aefbb58be12afe7e576f3b6d14c65eab965872c215 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 17:34:41,728 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 17:34:41,731 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 17:34:41,787 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 17:34:41,788 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 17:34:41,792 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 17:34:41,794 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 17:34:41,799 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 17:34:41,801 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 17:34:41,810 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 17:34:41,811 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 17:34:41,813 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 17:34:41,813 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 17:34:41,817 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 17:34:41,819 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 17:34:41,825 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 17:34:41,827 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 17:34:41,828 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 17:34:41,831 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 17:34:41,839 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 17:34:41,841 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 17:34:41,843 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 17:34:41,846 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 17:34:41,847 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 17:34:41,857 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 17:34:41,857 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 17:34:41,858 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 17:34:41,860 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 17:34:41,860 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 17:34:41,862 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 17:34:41,862 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 17:34:41,863 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 17:34:41,865 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 17:34:41,867 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 17:34:41,869 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 17:34:41,869 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 17:34:41,870 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 17:34:41,870 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 17:34:41,870 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 17:34:41,871 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 17:34:41,872 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 17:34:41,873 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-13 17:34:41,920 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 17:34:41,920 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 17:34:41,921 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 17:34:41,922 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 17:34:41,923 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 17:34:41,924 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 17:34:41,925 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 17:34:41,925 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 17:34:41,926 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 17:34:41,926 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 17:34:41,927 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 17:34:41,927 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 17:34:41,928 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 17:34:41,928 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 17:34:41,928 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 17:34:41,928 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 17:34:41,929 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 17:34:41,929 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 17:34:41,929 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 17:34:41,929 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 17:34:41,930 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 17:34:41,930 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 17:34:41,930 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 17:34:41,930 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 17:34:41,931 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:34:41,931 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 17:34:41,931 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 17:34:41,931 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 17:34:41,932 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 17:34:41,933 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 17:34:41,934 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 17:34:41,934 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 17:34:41,934 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 17:34:41,934 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 17:34:41,935 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_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 77b56c936ee2ca54668f40aefbb58be12afe7e576f3b6d14c65eab965872c215 [2021-11-13 17:34:42,238 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 17:34:42,261 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 17:34:42,264 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 17:34:42,265 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 17:34:42,266 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 17:34:42,268 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/product-lines/minepump_spec4_product40.cil.c [2021-11-13 17:34:42,337 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/data/9057a3e80/76928249d90a420198e96d50e7bc8846/FLAGd5d65cd09 [2021-11-13 17:34:42,971 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 17:34:42,983 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/sv-benchmarks/c/product-lines/minepump_spec4_product40.cil.c [2021-11-13 17:34:43,008 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/data/9057a3e80/76928249d90a420198e96d50e7bc8846/FLAGd5d65cd09 [2021-11-13 17:34:43,222 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/data/9057a3e80/76928249d90a420198e96d50e7bc8846 [2021-11-13 17:34:43,225 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 17:34:43,227 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 17:34:43,230 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 17:34:43,231 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 17:34:43,238 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 17:34:43,239 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:34:43" (1/1) ... [2021-11-13 17:34:43,241 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52e91046 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:34:43, skipping insertion in model container [2021-11-13 17:34:43,243 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:34:43" (1/1) ... [2021-11-13 17:34:43,251 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 17:34:43,299 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:34:43,618 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/sv-benchmarks/c/product-lines/minepump_spec4_product40.cil.c[5400,5413] [2021-11-13 17:34:43,746 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:34:43,766 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 17:34:43,817 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/sv-benchmarks/c/product-lines/minepump_spec4_product40.cil.c[5400,5413] [2021-11-13 17:34:43,882 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:34:43,915 INFO L208 MainTranslator]: Completed translation [2021-11-13 17:34:43,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:34:43 WrapperNode [2021-11-13 17:34:43,917 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 17:34:43,918 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 17:34:43,918 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 17:34:43,918 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 17:34:43,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:34:43" (1/1) ... [2021-11-13 17:34:43,954 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:34:43" (1/1) ... [2021-11-13 17:34:44,001 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 17:34:44,003 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 17:34:44,003 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 17:34:44,004 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 17:34:44,012 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:34:43" (1/1) ... [2021-11-13 17:34:44,013 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:34:43" (1/1) ... [2021-11-13 17:34:44,030 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:34:43" (1/1) ... [2021-11-13 17:34:44,036 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:34:43" (1/1) ... [2021-11-13 17:34:44,044 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:34:43" (1/1) ... [2021-11-13 17:34:44,049 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:34:43" (1/1) ... [2021-11-13 17:34:44,052 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:34:43" (1/1) ... [2021-11-13 17:34:44,055 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 17:34:44,056 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 17:34:44,057 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 17:34:44,057 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 17:34:44,058 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:34:43" (1/1) ... [2021-11-13 17:34:44,066 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:34:44,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:34:44,090 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 17:34:44,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 17:34:44,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 17:34:44,137 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-11-13 17:34:44,138 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-11-13 17:34:44,138 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-11-13 17:34:44,138 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-11-13 17:34:44,138 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-11-13 17:34:44,138 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-11-13 17:34:44,138 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2021-11-13 17:34:44,139 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2021-11-13 17:34:44,139 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-11-13 17:34:44,139 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-11-13 17:34:44,139 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-11-13 17:34:44,139 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-11-13 17:34:44,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 17:34:44,140 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-11-13 17:34:44,140 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-11-13 17:34:44,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 17:34:44,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 17:34:45,044 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 17:34:45,045 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-13 17:34:45,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:34:45 BoogieIcfgContainer [2021-11-13 17:34:45,047 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 17:34:45,049 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 17:34:45,049 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 17:34:45,053 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 17:34:45,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 05:34:43" (1/3) ... [2021-11-13 17:34:45,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14006b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:34:45, skipping insertion in model container [2021-11-13 17:34:45,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:34:43" (2/3) ... [2021-11-13 17:34:45,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14006b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:34:45, skipping insertion in model container [2021-11-13 17:34:45,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:34:45" (3/3) ... [2021-11-13 17:34:45,056 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product40.cil.c [2021-11-13 17:34:45,062 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 17:34:45,062 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 17:34:45,110 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 17:34:45,118 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 17:34:45,118 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 17:34:45,139 INFO L276 IsEmpty]: Start isEmpty. Operand has 88 states, 67 states have (on average 1.3880597014925373) internal successors, (93), 76 states have internal predecessors, (93), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 9 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-13 17:34:45,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-13 17:34:45,146 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:34:45,147 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:34:45,147 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:34:45,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:34:45,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1180075740, now seen corresponding path program 1 times [2021-11-13 17:34:45,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:34:45,164 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759077441] [2021-11-13 17:34:45,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:34:45,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:34:45,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:45,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:34:45,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:34:45,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759077441] [2021-11-13 17:34:45,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759077441] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:34:45,492 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:34:45,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 17:34:45,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350910380] [2021-11-13 17:34:45,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:34:45,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-13 17:34:45,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:34:45,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-13 17:34:45,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 17:34:45,536 INFO L87 Difference]: Start difference. First operand has 88 states, 67 states have (on average 1.3880597014925373) internal successors, (93), 76 states have internal predecessors, (93), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 9 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:34:45,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:34:45,601 INFO L93 Difference]: Finished difference Result 168 states and 229 transitions. [2021-11-13 17:34:45,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-13 17:34:45,604 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (2), 1 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 19 [2021-11-13 17:34:45,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:34:45,616 INFO L225 Difference]: With dead ends: 168 [2021-11-13 17:34:45,616 INFO L226 Difference]: Without dead ends: 79 [2021-11-13 17:34:45,620 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 17:34:45,625 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.49ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-13 17:34:45,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 5.49ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-13 17:34:45,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-11-13 17:34:45,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2021-11-13 17:34:45,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 60 states have (on average 1.3166666666666667) internal successors, (79), 68 states have internal predecessors, (79), 12 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (11), 8 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-13 17:34:45,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 102 transitions. [2021-11-13 17:34:45,687 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 102 transitions. Word has length 19 [2021-11-13 17:34:45,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:34:45,691 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 102 transitions. [2021-11-13 17:34:45,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:34:45,691 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 102 transitions. [2021-11-13 17:34:45,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-13 17:34:45,697 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:34:45,698 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:34:45,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 17:34:45,699 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:34:45,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:34:45,703 INFO L85 PathProgramCache]: Analyzing trace with hash 595736866, now seen corresponding path program 1 times [2021-11-13 17:34:45,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:34:45,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236331846] [2021-11-13 17:34:45,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:34:45,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:34:45,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:45,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:34:45,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:34:45,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236331846] [2021-11-13 17:34:45,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236331846] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:34:45,806 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:34:45,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 17:34:45,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699297781] [2021-11-13 17:34:45,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:34:45,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 17:34:45,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:34:45,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:34:45,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:34:45,823 INFO L87 Difference]: Start difference. First operand 79 states and 102 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:34:45,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:34:45,838 INFO L93 Difference]: Finished difference Result 119 states and 153 transitions. [2021-11-13 17:34:45,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:34:45,847 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 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 20 [2021-11-13 17:34:45,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:34:45,848 INFO L225 Difference]: With dead ends: 119 [2021-11-13 17:34:45,848 INFO L226 Difference]: Without dead ends: 70 [2021-11-13 17:34:45,849 INFO L932 BasicCegarLoop]: 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 [2021-11-13 17:34:45,851 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 17 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.02ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.62ms IncrementalHoareTripleChecker+Time [2021-11-13 17:34:45,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 156 Invalid, 1 Unknown, 0 Unchecked, 2.02ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.62ms Time] [2021-11-13 17:34:45,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-11-13 17:34:45,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-11-13 17:34:45,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 54 states have (on average 1.3333333333333333) internal successors, (72), 62 states have internal predecessors, (72), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 6 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-13 17:34:45,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 90 transitions. [2021-11-13 17:34:45,863 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 90 transitions. Word has length 20 [2021-11-13 17:34:45,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:34:45,863 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 90 transitions. [2021-11-13 17:34:45,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:34:45,864 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 90 transitions. [2021-11-13 17:34:45,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-13 17:34:45,865 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:34:45,865 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:34:45,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 17:34:45,866 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:34:45,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:34:45,866 INFO L85 PathProgramCache]: Analyzing trace with hash 369626779, now seen corresponding path program 1 times [2021-11-13 17:34:45,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:34:45,867 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880574925] [2021-11-13 17:34:45,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:34:45,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:34:45,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:46,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:34:46,006 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:34:46,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880574925] [2021-11-13 17:34:46,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880574925] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:34:46,007 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:34:46,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 17:34:46,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649526077] [2021-11-13 17:34:46,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:34:46,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:34:46,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:34:46,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:34:46,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:34:46,009 INFO L87 Difference]: Start difference. First operand 70 states and 90 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 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) [2021-11-13 17:34:46,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:34:46,137 INFO L93 Difference]: Finished difference Result 171 states and 224 transitions. [2021-11-13 17:34:46,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 17:34:46,138 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 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 25 [2021-11-13 17:34:46,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:34:46,140 INFO L225 Difference]: With dead ends: 171 [2021-11-13 17:34:46,141 INFO L226 Difference]: Without dead ends: 108 [2021-11-13 17:34:46,142 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:34:46,143 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 153 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.38ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 71.19ms IncrementalHoareTripleChecker+Time [2021-11-13 17:34:46,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 290 Invalid, 33 Unknown, 0 Unchecked, 4.38ms Time], IncrementalHoareTripleChecker [21 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 71.19ms Time] [2021-11-13 17:34:46,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-11-13 17:34:46,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 105. [2021-11-13 17:34:46,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 81 states have (on average 1.3580246913580247) internal successors, (110), 92 states have internal predecessors, (110), 13 states have call successors, (13), 10 states have call predecessors, (13), 10 states have return successors, (14), 9 states have call predecessors, (14), 13 states have call successors, (14) [2021-11-13 17:34:46,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 137 transitions. [2021-11-13 17:34:46,163 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 137 transitions. Word has length 25 [2021-11-13 17:34:46,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:34:46,163 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 137 transitions. [2021-11-13 17:34:46,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 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) [2021-11-13 17:34:46,164 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 137 transitions. [2021-11-13 17:34:46,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-13 17:34:46,166 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:34:46,166 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:34:46,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 17:34:46,166 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:34:46,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:34:46,167 INFO L85 PathProgramCache]: Analyzing trace with hash 779702988, now seen corresponding path program 1 times [2021-11-13 17:34:46,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:34:46,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755474519] [2021-11-13 17:34:46,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:34:46,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:34:46,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:46,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:34:46,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:34:46,333 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755474519] [2021-11-13 17:34:46,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755474519] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:34:46,333 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:34:46,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 17:34:46,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402997034] [2021-11-13 17:34:46,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:34:46,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 17:34:46,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:34:46,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 17:34:46,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:34:46,341 INFO L87 Difference]: Start difference. First operand 105 states and 137 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 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) [2021-11-13 17:34:46,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:34:46,851 INFO L93 Difference]: Finished difference Result 387 states and 550 transitions. [2021-11-13 17:34:46,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 17:34:46,851 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 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 28 [2021-11-13 17:34:46,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:34:46,864 INFO L225 Difference]: With dead ends: 387 [2021-11-13 17:34:46,864 INFO L226 Difference]: Without dead ends: 289 [2021-11-13 17:34:46,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2021-11-13 17:34:46,877 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 187 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 274.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.58ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 367.66ms IncrementalHoareTripleChecker+Time [2021-11-13 17:34:46,882 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [187 Valid, 635 Invalid, 188 Unknown, 0 Unchecked, 12.58ms Time], IncrementalHoareTripleChecker [22 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 367.66ms Time] [2021-11-13 17:34:46,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-11-13 17:34:46,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 279. [2021-11-13 17:34:46,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 213 states have (on average 1.3380281690140845) internal successors, (285), 242 states have internal predecessors, (285), 37 states have call successors, (37), 28 states have call predecessors, (37), 28 states have return successors, (54), 25 states have call predecessors, (54), 37 states have call successors, (54) [2021-11-13 17:34:46,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 376 transitions. [2021-11-13 17:34:46,961 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 376 transitions. Word has length 28 [2021-11-13 17:34:46,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:34:46,962 INFO L470 AbstractCegarLoop]: Abstraction has 279 states and 376 transitions. [2021-11-13 17:34:46,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 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) [2021-11-13 17:34:46,962 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 376 transitions. [2021-11-13 17:34:46,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-13 17:34:46,974 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:34:46,974 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:34:46,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-13 17:34:46,975 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:34:46,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:34:46,976 INFO L85 PathProgramCache]: Analyzing trace with hash -926135279, now seen corresponding path program 1 times [2021-11-13 17:34:46,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:34:46,977 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751832839] [2021-11-13 17:34:46,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:34:46,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:34:47,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:47,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:34:47,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:34:47,098 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751832839] [2021-11-13 17:34:47,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751832839] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:34:47,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:34:47,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 17:34:47,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352614388] [2021-11-13 17:34:47,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:34:47,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 17:34:47,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:34:47,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:34:47,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:34:47,100 INFO L87 Difference]: Start difference. First operand 279 states and 376 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 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) [2021-11-13 17:34:47,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:34:47,182 INFO L93 Difference]: Finished difference Result 630 states and 886 transitions. [2021-11-13 17:34:47,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:34:47,183 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 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 30 [2021-11-13 17:34:47,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:34:47,191 INFO L225 Difference]: With dead ends: 630 [2021-11-13 17:34:47,191 INFO L226 Difference]: Without dead ends: 358 [2021-11-13 17:34:47,194 INFO L932 BasicCegarLoop]: 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 [2021-11-13 17:34:47,196 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 52 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.09ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.69ms IncrementalHoareTripleChecker+Time [2021-11-13 17:34:47,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 148 Invalid, 19 Unknown, 0 Unchecked, 3.09ms Time], IncrementalHoareTripleChecker [8 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 23.69ms Time] [2021-11-13 17:34:47,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2021-11-13 17:34:47,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 353. [2021-11-13 17:34:47,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 275 states have (on average 1.2872727272727273) internal successors, (354), 298 states have internal predecessors, (354), 39 states have call successors, (39), 37 states have call predecessors, (39), 38 states have return successors, (75), 38 states have call predecessors, (75), 39 states have call successors, (75) [2021-11-13 17:34:47,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 468 transitions. [2021-11-13 17:34:47,254 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 468 transitions. Word has length 30 [2021-11-13 17:34:47,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:34:47,255 INFO L470 AbstractCegarLoop]: Abstraction has 353 states and 468 transitions. [2021-11-13 17:34:47,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 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) [2021-11-13 17:34:47,255 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 468 transitions. [2021-11-13 17:34:47,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-13 17:34:47,258 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:34:47,258 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:34:47,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-13 17:34:47,259 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:34:47,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:34:47,259 INFO L85 PathProgramCache]: Analyzing trace with hash 630945279, now seen corresponding path program 1 times [2021-11-13 17:34:47,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:34:47,260 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268355265] [2021-11-13 17:34:47,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:34:47,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:34:47,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:47,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-13 17:34:47,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:47,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-13 17:34:47,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:47,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-13 17:34:47,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:47,400 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-13 17:34:47,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:34:47,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268355265] [2021-11-13 17:34:47,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268355265] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 17:34:47,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157192579] [2021-11-13 17:34:47,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:34:47,401 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:34:47,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:34:47,408 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:34:47,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-13 17:34:47,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:47,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 17:34:47,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:34:47,903 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 17:34:47,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:34:48,259 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:34:48,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1157192579] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:34:48,260 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 17:34:48,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 15 [2021-11-13 17:34:48,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762360387] [2021-11-13 17:34:48,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 17:34:48,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-13 17:34:48,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:34:48,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-13 17:34:48,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-11-13 17:34:48,265 INFO L87 Difference]: Start difference. First operand 353 states and 468 transitions. Second operand has 15 states, 15 states have (on average 6.0) internal successors, (90), 12 states have internal predecessors, (90), 4 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-11-13 17:34:50,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:34:50,651 INFO L93 Difference]: Finished difference Result 968 states and 1326 transitions. [2021-11-13 17:34:50,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-11-13 17:34:50,652 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.0) internal successors, (90), 12 states have internal predecessors, (90), 4 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 54 [2021-11-13 17:34:50,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:34:50,659 INFO L225 Difference]: With dead ends: 968 [2021-11-13 17:34:50,659 INFO L226 Difference]: Without dead ends: 724 [2021-11-13 17:34:50,663 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 981 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=713, Invalid=2947, Unknown=0, NotChecked=0, Total=3660 [2021-11-13 17:34:50,664 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 684 mSDsluCounter, 1191 mSDsCounter, 0 mSdLazyCounter, 1467 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1210.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 693 SdHoareTripleChecker+Valid, 1430 SdHoareTripleChecker+Invalid, 1681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 29.42ms SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 1467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1440.50ms IncrementalHoareTripleChecker+Time [2021-11-13 17:34:50,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [693 Valid, 1430 Invalid, 1681 Unknown, 0 Unchecked, 29.42ms Time], IncrementalHoareTripleChecker [214 Valid, 1467 Invalid, 0 Unknown, 0 Unchecked, 1440.50ms Time] [2021-11-13 17:34:50,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2021-11-13 17:34:50,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 637. [2021-11-13 17:34:50,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 495 states have (on average 1.2686868686868686) internal successors, (628), 536 states have internal predecessors, (628), 66 states have call successors, (66), 62 states have call predecessors, (66), 75 states have return successors, (145), 66 states have call predecessors, (145), 66 states have call successors, (145) [2021-11-13 17:34:50,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 839 transitions. [2021-11-13 17:34:50,740 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 839 transitions. Word has length 54 [2021-11-13 17:34:50,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:34:50,743 INFO L470 AbstractCegarLoop]: Abstraction has 637 states and 839 transitions. [2021-11-13 17:34:50,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.0) internal successors, (90), 12 states have internal predecessors, (90), 4 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-11-13 17:34:50,746 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 839 transitions. [2021-11-13 17:34:50,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-13 17:34:50,752 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:34:50,752 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:34:50,788 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-13 17:34:50,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-13 17:34:50,975 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:34:50,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:34:50,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1616471514, now seen corresponding path program 1 times [2021-11-13 17:34:50,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:34:50,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451335152] [2021-11-13 17:34:50,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:34:50,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:34:51,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:51,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-13 17:34:51,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:51,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-13 17:34:51,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:51,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-11-13 17:34:51,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:51,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:34:51,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:51,118 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-13 17:34:51,118 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:34:51,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451335152] [2021-11-13 17:34:51,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451335152] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 17:34:51,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974247376] [2021-11-13 17:34:51,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:34:51,119 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:34:51,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:34:51,123 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:34:51,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-13 17:34:51,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:51,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 17:34:51,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:34:51,404 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-13 17:34:51,404 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 17:34:51,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1974247376] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:34:51,405 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 17:34:51,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 7 [2021-11-13 17:34:51,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010892933] [2021-11-13 17:34:51,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:34:51,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:34:51,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:34:51,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:34:51,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:34:51,407 INFO L87 Difference]: Start difference. First operand 637 states and 839 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-13 17:34:51,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:34:51,479 INFO L93 Difference]: Finished difference Result 1297 states and 1766 transitions. [2021-11-13 17:34:51,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 17:34:51,479 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 72 [2021-11-13 17:34:51,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:34:51,485 INFO L225 Difference]: With dead ends: 1297 [2021-11-13 17:34:51,486 INFO L226 Difference]: Without dead ends: 667 [2021-11-13 17:34:51,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-13 17:34:51,490 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 9 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.53ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.48ms IncrementalHoareTripleChecker+Time [2021-11-13 17:34:51,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 361 Invalid, 17 Unknown, 0 Unchecked, 1.53ms Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 11.48ms Time] [2021-11-13 17:34:51,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2021-11-13 17:34:51,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 652. [2021-11-13 17:34:51,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 510 states have (on average 1.2607843137254902) internal successors, (643), 551 states have internal predecessors, (643), 66 states have call successors, (66), 62 states have call predecessors, (66), 75 states have return successors, (145), 66 states have call predecessors, (145), 66 states have call successors, (145) [2021-11-13 17:34:51,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 854 transitions. [2021-11-13 17:34:51,546 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 854 transitions. Word has length 72 [2021-11-13 17:34:51,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:34:51,546 INFO L470 AbstractCegarLoop]: Abstraction has 652 states and 854 transitions. [2021-11-13 17:34:51,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-13 17:34:51,547 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 854 transitions. [2021-11-13 17:34:51,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-13 17:34:51,550 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:34:51,550 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:34:51,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-13 17:34:51,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-13 17:34:51,770 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:34:51,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:34:51,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1969559896, now seen corresponding path program 1 times [2021-11-13 17:34:51,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:34:51,771 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734365500] [2021-11-13 17:34:51,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:34:51,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:34:51,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:51,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-13 17:34:51,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:51,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-13 17:34:51,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:51,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-11-13 17:34:51,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:51,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:34:51,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:51,902 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-13 17:34:51,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:34:51,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734365500] [2021-11-13 17:34:51,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734365500] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 17:34:51,903 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952212150] [2021-11-13 17:34:51,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:34:51,903 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:34:51,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:34:51,907 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:34:51,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-13 17:34:52,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:52,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 17:34:52,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:34:52,213 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-13 17:34:52,213 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 17:34:52,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952212150] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:34:52,214 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 17:34:52,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2021-11-13 17:34:52,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788566779] [2021-11-13 17:34:52,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:34:52,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:34:52,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:34:52,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:34:52,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:34:52,217 INFO L87 Difference]: Start difference. First operand 652 states and 854 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-13 17:34:52,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:34:52,280 INFO L93 Difference]: Finished difference Result 1223 states and 1638 transitions. [2021-11-13 17:34:52,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:34:52,280 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 72 [2021-11-13 17:34:52,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:34:52,286 INFO L225 Difference]: With dead ends: 1223 [2021-11-13 17:34:52,286 INFO L226 Difference]: Without dead ends: 578 [2021-11-13 17:34:52,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:34:52,290 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 11 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.27ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.98ms IncrementalHoareTripleChecker+Time [2021-11-13 17:34:52,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 264 Invalid, 11 Unknown, 0 Unchecked, 1.27ms Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 9.98ms Time] [2021-11-13 17:34:52,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2021-11-13 17:34:52,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 578. [2021-11-13 17:34:52,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 450 states have (on average 1.2533333333333334) internal successors, (564), 485 states have internal predecessors, (564), 62 states have call successors, (62), 58 states have call predecessors, (62), 65 states have return successors, (119), 60 states have call predecessors, (119), 62 states have call successors, (119) [2021-11-13 17:34:52,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 745 transitions. [2021-11-13 17:34:52,351 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 745 transitions. Word has length 72 [2021-11-13 17:34:52,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:34:52,352 INFO L470 AbstractCegarLoop]: Abstraction has 578 states and 745 transitions. [2021-11-13 17:34:52,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-13 17:34:52,352 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 745 transitions. [2021-11-13 17:34:52,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-13 17:34:52,355 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:34:52,355 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:34:52,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-13 17:34:52,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:34:52,578 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:34:52,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:34:52,579 INFO L85 PathProgramCache]: Analyzing trace with hash 2046496720, now seen corresponding path program 1 times [2021-11-13 17:34:52,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:34:52,579 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228350351] [2021-11-13 17:34:52,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:34:52,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:34:52,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:52,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-13 17:34:52,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:52,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:34:52,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:52,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-13 17:34:52,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:52,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-13 17:34:52,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:52,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:34:52,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:52,715 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 17:34:52,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:34:52,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228350351] [2021-11-13 17:34:52,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228350351] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 17:34:52,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612110681] [2021-11-13 17:34:52,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:34:52,716 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:34:52,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:34:52,717 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:34:52,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-13 17:34:52,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:52,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 17:34:52,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:34:53,039 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:34:53,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:34:53,274 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 17:34:53,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612110681] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:34:53,275 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 17:34:53,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 11 [2021-11-13 17:34:53,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460472232] [2021-11-13 17:34:53,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 17:34:53,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-13 17:34:53,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:34:53,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-13 17:34:53,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-13 17:34:53,277 INFO L87 Difference]: Start difference. First operand 578 states and 745 transitions. Second operand has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 8 states have internal predecessors, (74), 3 states have call successors, (12), 6 states have call predecessors, (12), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-13 17:34:54,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:34:54,237 INFO L93 Difference]: Finished difference Result 1118 states and 1454 transitions. [2021-11-13 17:34:54,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-13 17:34:54,238 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 8 states have internal predecessors, (74), 3 states have call successors, (12), 6 states have call predecessors, (12), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 76 [2021-11-13 17:34:54,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:34:54,244 INFO L225 Difference]: With dead ends: 1118 [2021-11-13 17:34:54,244 INFO L226 Difference]: Without dead ends: 619 [2021-11-13 17:34:54,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 162 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=279, Invalid=843, Unknown=0, NotChecked=0, Total=1122 [2021-11-13 17:34:54,248 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 260 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 559.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.10ms SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 666.44ms IncrementalHoareTripleChecker+Time [2021-11-13 17:34:54,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [266 Valid, 815 Invalid, 724 Unknown, 0 Unchecked, 13.10ms Time], IncrementalHoareTripleChecker [92 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 666.44ms Time] [2021-11-13 17:34:54,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2021-11-13 17:34:54,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 520. [2021-11-13 17:34:54,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 402 states have (on average 1.2313432835820894) internal successors, (495), 435 states have internal predecessors, (495), 57 states have call successors, (57), 53 states have call predecessors, (57), 60 states have return successors, (112), 52 states have call predecessors, (112), 57 states have call successors, (112) [2021-11-13 17:34:54,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 664 transitions. [2021-11-13 17:34:54,290 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 664 transitions. Word has length 76 [2021-11-13 17:34:54,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:34:54,291 INFO L470 AbstractCegarLoop]: Abstraction has 520 states and 664 transitions. [2021-11-13 17:34:54,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 8 states have internal predecessors, (74), 3 states have call successors, (12), 6 states have call predecessors, (12), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-13 17:34:54,291 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 664 transitions. [2021-11-13 17:34:54,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-13 17:34:54,295 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:34:54,295 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:34:54,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-13 17:34:54,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:34:54,517 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:34:54,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:34:54,518 INFO L85 PathProgramCache]: Analyzing trace with hash -48216495, now seen corresponding path program 1 times [2021-11-13 17:34:54,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:34:54,518 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124748652] [2021-11-13 17:34:54,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:34:54,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:34:54,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:54,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-13 17:34:54,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:54,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-13 17:34:54,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:54,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-13 17:34:54,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:54,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-13 17:34:54,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:54,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 17:34:54,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:54,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:34:54,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:54,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-11-13 17:34:54,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:54,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:34:54,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:54,611 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 38 proven. 8 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-13 17:34:54,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:34:54,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124748652] [2021-11-13 17:34:54,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124748652] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 17:34:54,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850632714] [2021-11-13 17:34:54,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:34:54,613 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:34:54,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:34:54,614 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:34:54,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-13 17:34:54,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:54,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 565 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:34:54,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:34:54,969 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-11-13 17:34:54,970 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 17:34:54,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850632714] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:34:54,970 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 17:34:54,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 7 [2021-11-13 17:34:54,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001544464] [2021-11-13 17:34:54,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:34:54,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 17:34:54,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:34:54,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:34:54,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:34:54,972 INFO L87 Difference]: Start difference. First operand 520 states and 664 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-13 17:34:55,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:34:55,054 INFO L93 Difference]: Finished difference Result 1041 states and 1329 transitions. [2021-11-13 17:34:55,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:34:55,054 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) Word has length 112 [2021-11-13 17:34:55,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:34:55,058 INFO L225 Difference]: With dead ends: 1041 [2021-11-13 17:34:55,059 INFO L226 Difference]: Without dead ends: 528 [2021-11-13 17:34:55,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:34:55,062 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 33 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.96ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51.36ms IncrementalHoareTripleChecker+Time [2021-11-13 17:34:55,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 203 Invalid, 5 Unknown, 0 Unchecked, 0.96ms Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 51.36ms Time] [2021-11-13 17:34:55,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2021-11-13 17:34:55,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 520. [2021-11-13 17:34:55,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 402 states have (on average 1.2213930348258706) internal successors, (491), 435 states have internal predecessors, (491), 57 states have call successors, (57), 53 states have call predecessors, (57), 60 states have return successors, (103), 52 states have call predecessors, (103), 57 states have call successors, (103) [2021-11-13 17:34:55,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 651 transitions. [2021-11-13 17:34:55,099 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 651 transitions. Word has length 112 [2021-11-13 17:34:55,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:34:55,100 INFO L470 AbstractCegarLoop]: Abstraction has 520 states and 651 transitions. [2021-11-13 17:34:55,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-13 17:34:55,100 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 651 transitions. [2021-11-13 17:34:55,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-13 17:34:55,103 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:34:55,103 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:34:55,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-13 17:34:55,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-13 17:34:55,319 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:34:55,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:34:55,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1016756628, now seen corresponding path program 2 times [2021-11-13 17:34:55,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:34:55,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309828878] [2021-11-13 17:34:55,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:34:55,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:34:55,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 17:34:55,428 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 17:34:55,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 17:34:55,647 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-13 17:34:55,650 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-13 17:34:55,651 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-13 17:34:55,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-13 17:34:55,657 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:34:55,661 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-13 17:34:55,753 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:203) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getProgramExecutionAsString(CounterExampleResult.java:155) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getLongDescription(CounterExampleResult.java:134) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:586) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:181) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-13 17:34:55,757 INFO L158 Benchmark]: Toolchain (without parser) took 12529.21ms. Allocated memory was 113.2MB in the beginning and 169.9MB in the end (delta: 56.6MB). Free memory was 71.0MB in the beginning and 60.2MB in the end (delta: 10.8MB). Peak memory consumption was 67.1MB. Max. memory is 16.1GB. [2021-11-13 17:34:55,757 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 113.2MB. Free memory is still 88.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 17:34:55,757 INFO L158 Benchmark]: CACSL2BoogieTranslator took 686.59ms. Allocated memory is still 113.2MB. Free memory was 70.8MB in the beginning and 79.9MB in the end (delta: -9.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-13 17:34:55,758 INFO L158 Benchmark]: Boogie Procedure Inliner took 84.68ms. Allocated memory is still 113.2MB. Free memory was 79.9MB in the beginning and 77.5MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 17:34:55,758 INFO L158 Benchmark]: Boogie Preprocessor took 52.55ms. Allocated memory is still 113.2MB. Free memory was 77.5MB in the beginning and 75.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 17:34:55,759 INFO L158 Benchmark]: RCFGBuilder took 990.75ms. Allocated memory was 113.2MB in the beginning and 140.5MB in the end (delta: 27.3MB). Free memory was 75.4MB in the beginning and 114.2MB in the end (delta: -38.9MB). Peak memory consumption was 45.5MB. Max. memory is 16.1GB. [2021-11-13 17:34:55,759 INFO L158 Benchmark]: TraceAbstraction took 10707.31ms. Allocated memory was 140.5MB in the beginning and 169.9MB in the end (delta: 29.4MB). Free memory was 114.2MB in the beginning and 60.2MB in the end (delta: 54.1MB). Peak memory consumption was 82.2MB. Max. memory is 16.1GB. [2021-11-13 17:34:55,762 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 113.2MB. Free memory is still 88.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 686.59ms. Allocated memory is still 113.2MB. Free memory was 70.8MB in the beginning and 79.9MB in the end (delta: -9.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 84.68ms. Allocated memory is still 113.2MB. Free memory was 79.9MB in the beginning and 77.5MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.55ms. Allocated memory is still 113.2MB. Free memory was 77.5MB in the beginning and 75.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 990.75ms. Allocated memory was 113.2MB in the beginning and 140.5MB in the end (delta: 27.3MB). Free memory was 75.4MB in the beginning and 114.2MB in the end (delta: -38.9MB). Peak memory consumption was 45.5MB. Max. memory is 16.1GB. * TraceAbstraction took 10707.31ms. Allocated memory was 140.5MB in the beginning and 169.9MB in the end (delta: 29.4MB). Free memory was 114.2MB in the beginning and 60.2MB in the end (delta: 54.1MB). Peak memory consumption was 82.2MB. 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 - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-13 17:34:55,817 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product40.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y --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 77b56c936ee2ca54668f40aefbb58be12afe7e576f3b6d14c65eab965872c215 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 17:34:58,299 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 17:34:58,302 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 17:34:58,365 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 17:34:58,366 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 17:34:58,370 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 17:34:58,372 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 17:34:58,379 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 17:34:58,382 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 17:34:58,387 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 17:34:58,389 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 17:34:58,391 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 17:34:58,391 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 17:34:58,394 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 17:34:58,396 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 17:34:58,401 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 17:34:58,402 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 17:34:58,404 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 17:34:58,406 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 17:34:58,413 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 17:34:58,415 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 17:34:58,417 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 17:34:58,420 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 17:34:58,422 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 17:34:58,430 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 17:34:58,431 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 17:34:58,431 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 17:34:58,433 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 17:34:58,434 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 17:34:58,435 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 17:34:58,436 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 17:34:58,437 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 17:34:58,439 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 17:34:58,440 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 17:34:58,441 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 17:34:58,442 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 17:34:58,443 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 17:34:58,443 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 17:34:58,443 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 17:34:58,445 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 17:34:58,446 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 17:34:58,451 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-13 17:34:58,493 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 17:34:58,493 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 17:34:58,494 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 17:34:58,495 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 17:34:58,495 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 17:34:58,496 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 17:34:58,497 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 17:34:58,498 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 17:34:58,498 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 17:34:58,498 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 17:34:58,500 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 17:34:58,500 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 17:34:58,500 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 17:34:58,500 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 17:34:58,501 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 17:34:58,501 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 17:34:58,501 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 17:34:58,502 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 17:34:58,502 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 17:34:58,502 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 17:34:58,502 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 17:34:58,503 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 17:34:58,503 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 17:34:58,503 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 17:34:58,503 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 17:34:58,504 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:34:58,504 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 17:34:58,505 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 17:34:58,505 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 17:34:58,505 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-13 17:34:58,506 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 17:34:58,506 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 17:34:58,506 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 17:34:58,507 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 17:34:58,507 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 17:34:58,507 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 17:34:58,507 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_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 77b56c936ee2ca54668f40aefbb58be12afe7e576f3b6d14c65eab965872c215 [2021-11-13 17:34:58,902 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 17:34:58,923 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 17:34:58,926 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 17:34:58,927 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 17:34:58,928 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 17:34:58,929 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/product-lines/minepump_spec4_product40.cil.c [2021-11-13 17:34:59,011 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/data/16432840d/c52dae73f8b4464185d68cc27efde163/FLAGe088a431e [2021-11-13 17:34:59,621 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 17:34:59,622 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/sv-benchmarks/c/product-lines/minepump_spec4_product40.cil.c [2021-11-13 17:34:59,635 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/data/16432840d/c52dae73f8b4464185d68cc27efde163/FLAGe088a431e [2021-11-13 17:34:59,912 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/data/16432840d/c52dae73f8b4464185d68cc27efde163 [2021-11-13 17:34:59,915 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 17:34:59,917 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 17:34:59,921 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 17:34:59,921 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 17:34:59,925 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 17:34:59,926 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:34:59" (1/1) ... [2021-11-13 17:34:59,927 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ff50f78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:34:59, skipping insertion in model container [2021-11-13 17:34:59,928 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:34:59" (1/1) ... [2021-11-13 17:34:59,936 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 17:35:00,003 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:35:00,326 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/sv-benchmarks/c/product-lines/minepump_spec4_product40.cil.c[5400,5413] [2021-11-13 17:35:00,424 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:35:00,443 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 17:35:00,470 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/sv-benchmarks/c/product-lines/minepump_spec4_product40.cil.c[5400,5413] [2021-11-13 17:35:00,533 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:35:00,562 INFO L208 MainTranslator]: Completed translation [2021-11-13 17:35:00,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:35:00 WrapperNode [2021-11-13 17:35:00,563 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 17:35:00,564 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 17:35:00,564 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 17:35:00,564 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 17:35:00,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:35:00" (1/1) ... [2021-11-13 17:35:00,595 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:35:00" (1/1) ... [2021-11-13 17:35:00,651 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 17:35:00,652 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 17:35:00,652 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 17:35:00,653 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 17:35:00,664 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:35:00" (1/1) ... [2021-11-13 17:35:00,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:35:00" (1/1) ... [2021-11-13 17:35:00,689 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:35:00" (1/1) ... [2021-11-13 17:35:00,690 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:35:00" (1/1) ... [2021-11-13 17:35:00,699 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:35:00" (1/1) ... [2021-11-13 17:35:00,719 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:35:00" (1/1) ... [2021-11-13 17:35:00,722 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:35:00" (1/1) ... [2021-11-13 17:35:00,725 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 17:35:00,726 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 17:35:00,726 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 17:35:00,726 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 17:35:00,727 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:35:00" (1/1) ... [2021-11-13 17:35:00,748 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:35:00,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:35:00,772 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 17:35:00,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 17:35:00,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 17:35:00,823 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-11-13 17:35:00,823 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-11-13 17:35:00,823 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-11-13 17:35:00,823 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-11-13 17:35:00,825 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-11-13 17:35:00,825 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-11-13 17:35:00,825 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2021-11-13 17:35:00,826 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2021-11-13 17:35:00,826 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-11-13 17:35:00,826 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-11-13 17:35:00,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 17:35:00,826 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-11-13 17:35:00,826 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-11-13 17:35:00,827 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-11-13 17:35:00,827 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-11-13 17:35:00,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 17:35:00,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 17:35:03,038 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 17:35:03,039 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-13 17:35:03,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:35:03 BoogieIcfgContainer [2021-11-13 17:35:03,041 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 17:35:03,043 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 17:35:03,043 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 17:35:03,046 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 17:35:03,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 05:34:59" (1/3) ... [2021-11-13 17:35:03,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b9009b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:35:03, skipping insertion in model container [2021-11-13 17:35:03,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:35:00" (2/3) ... [2021-11-13 17:35:03,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b9009b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:35:03, skipping insertion in model container [2021-11-13 17:35:03,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:35:03" (3/3) ... [2021-11-13 17:35:03,049 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product40.cil.c [2021-11-13 17:35:03,054 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 17:35:03,054 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 17:35:03,113 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 17:35:03,122 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 17:35:03,122 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 17:35:03,150 INFO L276 IsEmpty]: Start isEmpty. Operand has 88 states, 67 states have (on average 1.3880597014925373) internal successors, (93), 76 states have internal predecessors, (93), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 9 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-13 17:35:03,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-13 17:35:03,158 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:35:03,159 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:35:03,160 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:35:03,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:35:03,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1180075740, now seen corresponding path program 1 times [2021-11-13 17:35:03,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:35:03,182 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [429632] [2021-11-13 17:35:03,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:35:03,183 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:35:03,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:35:03,186 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:35:03,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 17:35:03,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:03,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-13 17:35:03,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:35:03,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:35:03,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:35:03,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:35:03,575 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:35:03,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [429632] [2021-11-13 17:35:03,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [429632] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:35:03,576 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:35:03,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 17:35:03,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27969961] [2021-11-13 17:35:03,579 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:35:03,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-13 17:35:03,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:35:03,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-13 17:35:03,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 17:35:03,621 INFO L87 Difference]: Start difference. First operand has 88 states, 67 states have (on average 1.3880597014925373) internal successors, (93), 76 states have internal predecessors, (93), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 9 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:35:03,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:35:03,675 INFO L93 Difference]: Finished difference Result 168 states and 229 transitions. [2021-11-13 17:35:03,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-13 17:35:03,677 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (2), 1 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 19 [2021-11-13 17:35:03,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:35:03,688 INFO L225 Difference]: With dead ends: 168 [2021-11-13 17:35:03,688 INFO L226 Difference]: Without dead ends: 79 [2021-11-13 17:35:03,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 17:35:03,697 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.93ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-13 17:35:03,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 3.93ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-13 17:35:03,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-11-13 17:35:03,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2021-11-13 17:35:03,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 60 states have (on average 1.3166666666666667) internal successors, (79), 68 states have internal predecessors, (79), 12 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (11), 8 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-13 17:35:03,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 102 transitions. [2021-11-13 17:35:03,757 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 102 transitions. Word has length 19 [2021-11-13 17:35:03,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:35:03,758 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 102 transitions. [2021-11-13 17:35:03,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:35:03,759 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 102 transitions. [2021-11-13 17:35:03,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-13 17:35:03,762 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:35:03,762 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:35:03,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 17:35:03,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:35:03,963 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:35:03,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:35:03,964 INFO L85 PathProgramCache]: Analyzing trace with hash 595736866, now seen corresponding path program 1 times [2021-11-13 17:35:03,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:35:03,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1613334811] [2021-11-13 17:35:03,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:35:03,965 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:35:03,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:35:03,970 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:35:03,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 17:35:04,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:04,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 17:35:04,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:35:04,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:35:04,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:35:04,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:35:04,276 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:35:04,276 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1613334811] [2021-11-13 17:35:04,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1613334811] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:35:04,277 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:35:04,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 17:35:04,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333534034] [2021-11-13 17:35:04,277 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:35:04,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:35:04,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:35:04,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:35:04,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:35:04,280 INFO L87 Difference]: Start difference. First operand 79 states and 102 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:35:04,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:35:04,299 INFO L93 Difference]: Finished difference Result 119 states and 153 transitions. [2021-11-13 17:35:04,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:35:04,300 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 1 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 20 [2021-11-13 17:35:04,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:35:04,302 INFO L225 Difference]: With dead ends: 119 [2021-11-13 17:35:04,302 INFO L226 Difference]: Without dead ends: 70 [2021-11-13 17:35:04,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:35:04,304 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 17 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.58ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.48ms IncrementalHoareTripleChecker+Time [2021-11-13 17:35:04,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 223 Invalid, 1 Unknown, 0 Unchecked, 2.58ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.48ms Time] [2021-11-13 17:35:04,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-11-13 17:35:04,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-11-13 17:35:04,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 54 states have (on average 1.3333333333333333) internal successors, (72), 62 states have internal predecessors, (72), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 6 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-13 17:35:04,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 90 transitions. [2021-11-13 17:35:04,315 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 90 transitions. Word has length 20 [2021-11-13 17:35:04,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:35:04,316 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 90 transitions. [2021-11-13 17:35:04,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:35:04,316 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 90 transitions. [2021-11-13 17:35:04,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-13 17:35:04,317 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:35:04,318 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:35:04,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 17:35:04,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:35:04,529 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:35:04,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:35:04,530 INFO L85 PathProgramCache]: Analyzing trace with hash 369626779, now seen corresponding path program 1 times [2021-11-13 17:35:04,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:35:04,531 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [462878238] [2021-11-13 17:35:04,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:35:04,531 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:35:04,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:35:04,533 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:35:04,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 17:35:04,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:04,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 17:35:04,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:35:04,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:35:04,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:35:04,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:35:04,846 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:35:04,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [462878238] [2021-11-13 17:35:04,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [462878238] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:35:04,847 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:35:04,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 17:35:04,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084409435] [2021-11-13 17:35:04,847 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:35:04,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:35:04,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:35:04,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:35:04,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:35:04,849 INFO L87 Difference]: Start difference. First operand 70 states and 90 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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) [2021-11-13 17:35:04,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:35:04,971 INFO L93 Difference]: Finished difference Result 232 states and 306 transitions. [2021-11-13 17:35:04,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:35:04,972 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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 25 [2021-11-13 17:35:04,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:35:04,976 INFO L225 Difference]: With dead ends: 232 [2021-11-13 17:35:04,978 INFO L226 Difference]: Without dead ends: 169 [2021-11-13 17:35:04,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:35:04,984 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 158 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 72.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.30ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 92.47ms IncrementalHoareTripleChecker+Time [2021-11-13 17:35:04,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 262 Invalid, 28 Unknown, 0 Unchecked, 3.30ms Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 92.47ms Time] [2021-11-13 17:35:04,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-11-13 17:35:05,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 163. [2021-11-13 17:35:05,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 124 states have (on average 1.3709677419354838) internal successors, (170), 142 states have internal predecessors, (170), 22 states have call successors, (22), 16 states have call predecessors, (22), 16 states have return successors, (23), 14 states have call predecessors, (23), 22 states have call successors, (23) [2021-11-13 17:35:05,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 215 transitions. [2021-11-13 17:35:05,028 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 215 transitions. Word has length 25 [2021-11-13 17:35:05,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:35:05,028 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 215 transitions. [2021-11-13 17:35:05,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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) [2021-11-13 17:35:05,029 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 215 transitions. [2021-11-13 17:35:05,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-13 17:35:05,031 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:35:05,031 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:35:05,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 17:35:05,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:35:05,244 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:35:05,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:35:05,245 INFO L85 PathProgramCache]: Analyzing trace with hash 779702988, now seen corresponding path program 1 times [2021-11-13 17:35:05,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:35:05,246 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [571824682] [2021-11-13 17:35:05,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:35:05,246 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:35:05,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:35:05,248 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:35:05,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 17:35:05,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:05,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 17:35:05,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:35:05,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:35:05,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:35:05,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:35:05,661 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:35:05,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [571824682] [2021-11-13 17:35:05,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [571824682] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:35:05,662 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:35:05,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-13 17:35:05,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504629760] [2021-11-13 17:35:05,662 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:35:05,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 17:35:05,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:35:05,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 17:35:05,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:35:05,664 INFO L87 Difference]: Start difference. First operand 163 states and 215 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 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) [2021-11-13 17:35:05,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:35:05,910 INFO L93 Difference]: Finished difference Result 615 states and 873 transitions. [2021-11-13 17:35:05,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 17:35:05,911 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 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 28 [2021-11-13 17:35:05,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:35:05,925 INFO L225 Difference]: With dead ends: 615 [2021-11-13 17:35:05,926 INFO L226 Difference]: Without dead ends: 459 [2021-11-13 17:35:05,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-11-13 17:35:05,936 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 129 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 106.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.44ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 148.16ms IncrementalHoareTripleChecker+Time [2021-11-13 17:35:05,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 717 Invalid, 103 Unknown, 0 Unchecked, 7.44ms Time], IncrementalHoareTripleChecker [11 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 148.16ms Time] [2021-11-13 17:35:05,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2021-11-13 17:35:06,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 444. [2021-11-13 17:35:06,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 335 states have (on average 1.3432835820895523) internal successors, (450), 384 states have internal predecessors, (450), 63 states have call successors, (63), 45 states have call predecessors, (63), 45 states have return successors, (87), 39 states have call predecessors, (87), 63 states have call successors, (87) [2021-11-13 17:35:06,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 600 transitions. [2021-11-13 17:35:06,043 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 600 transitions. Word has length 28 [2021-11-13 17:35:06,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:35:06,043 INFO L470 AbstractCegarLoop]: Abstraction has 444 states and 600 transitions. [2021-11-13 17:35:06,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 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) [2021-11-13 17:35:06,044 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 600 transitions. [2021-11-13 17:35:06,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-13 17:35:06,056 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:35:06,056 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:35:06,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 17:35:06,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:35:06,268 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:35:06,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:35:06,269 INFO L85 PathProgramCache]: Analyzing trace with hash -926135279, now seen corresponding path program 1 times [2021-11-13 17:35:06,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:35:06,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1106228271] [2021-11-13 17:35:06,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:35:06,270 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:35:06,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:35:06,271 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:35:06,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 17:35:06,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:06,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 17:35:06,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:35:06,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:35:06,521 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:35:06,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:35:06,586 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:35:06,586 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1106228271] [2021-11-13 17:35:06,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1106228271] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:35:06,587 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:35:06,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 17:35:06,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930612481] [2021-11-13 17:35:06,587 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:35:06,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 17:35:06,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:35:06,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:35:06,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:35:06,589 INFO L87 Difference]: Start difference. First operand 444 states and 600 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2021-11-13 17:35:06,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:35:06,690 INFO L93 Difference]: Finished difference Result 1051 states and 1480 transitions. [2021-11-13 17:35:06,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:35:06,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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 30 [2021-11-13 17:35:06,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:35:06,696 INFO L225 Difference]: With dead ends: 1051 [2021-11-13 17:35:06,696 INFO L226 Difference]: Without dead ends: 614 [2021-11-13 17:35:06,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:35:06,699 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 67 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.31ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.00ms IncrementalHoareTripleChecker+Time [2021-11-13 17:35:06,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 148 Invalid, 19 Unknown, 0 Unchecked, 1.31ms Time], IncrementalHoareTripleChecker [8 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 43.00ms Time] [2021-11-13 17:35:06,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2021-11-13 17:35:06,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 601. [2021-11-13 17:35:06,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 464 states have (on average 1.293103448275862) internal successors, (600), 503 states have internal predecessors, (600), 69 states have call successors, (69), 65 states have call predecessors, (69), 67 states have return successors, (132), 65 states have call predecessors, (132), 69 states have call successors, (132) [2021-11-13 17:35:06,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 801 transitions. [2021-11-13 17:35:06,757 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 801 transitions. Word has length 30 [2021-11-13 17:35:06,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:35:06,758 INFO L470 AbstractCegarLoop]: Abstraction has 601 states and 801 transitions. [2021-11-13 17:35:06,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2021-11-13 17:35:06,758 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 801 transitions. [2021-11-13 17:35:06,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-13 17:35:06,761 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:35:06,761 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:35:06,774 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-13 17:35:06,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:35:06,973 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:35:06,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:35:06,974 INFO L85 PathProgramCache]: Analyzing trace with hash 630945279, now seen corresponding path program 1 times [2021-11-13 17:35:06,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:35:06,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [829502622] [2021-11-13 17:35:06,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:35:06,975 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:35:06,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:35:06,976 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:35:06,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 17:35:07,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:07,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 17:35:07,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:35:07,358 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 17:35:07,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:35:07,794 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:35:07,794 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:35:07,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [829502622] [2021-11-13 17:35:07,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [829502622] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:35:07,794 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 17:35:07,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2021-11-13 17:35:07,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841744675] [2021-11-13 17:35:07,795 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 17:35:07,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 17:35:07,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:35:07,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 17:35:07,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-11-13 17:35:07,796 INFO L87 Difference]: Start difference. First operand 601 states and 801 transitions. Second operand has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 10 states have internal predecessors, (80), 5 states have call successors, (7), 4 states have call predecessors, (7), 5 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-13 17:35:09,031 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:35:10,215 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:35:11,463 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:35:12,819 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:35:14,306 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:35:15,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:35:15,983 INFO L93 Difference]: Finished difference Result 2236 states and 3128 transitions. [2021-11-13 17:35:15,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-13 17:35:15,984 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 10 states have internal predecessors, (80), 5 states have call successors, (7), 4 states have call predecessors, (7), 5 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) Word has length 54 [2021-11-13 17:35:15,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:35:15,998 INFO L225 Difference]: With dead ends: 2236 [2021-11-13 17:35:15,998 INFO L226 Difference]: Without dead ends: 1812 [2021-11-13 17:35:16,002 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=130, Invalid=376, Unknown=0, NotChecked=0, Total=506 [2021-11-13 17:35:16,003 INFO L933 BasicCegarLoop]: 221 mSDtfsCounter, 723 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 843 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7564.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 745 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 1081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.50ms SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7775.59ms IncrementalHoareTripleChecker+Time [2021-11-13 17:35:16,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [745 Valid, 926 Invalid, 1081 Unknown, 0 Unchecked, 19.50ms Time], IncrementalHoareTripleChecker [238 Valid, 843 Invalid, 0 Unknown, 0 Unchecked, 7775.59ms Time] [2021-11-13 17:35:16,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1812 states. [2021-11-13 17:35:16,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1812 to 1746. [2021-11-13 17:35:16,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1746 states, 1356 states have (on average 1.269174041297935) internal successors, (1721), 1462 states have internal predecessors, (1721), 188 states have call successors, (188), 170 states have call predecessors, (188), 201 states have return successors, (398), 187 states have call predecessors, (398), 188 states have call successors, (398) [2021-11-13 17:35:16,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1746 states to 1746 states and 2307 transitions. [2021-11-13 17:35:16,187 INFO L78 Accepts]: Start accepts. Automaton has 1746 states and 2307 transitions. Word has length 54 [2021-11-13 17:35:16,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:35:16,187 INFO L470 AbstractCegarLoop]: Abstraction has 1746 states and 2307 transitions. [2021-11-13 17:35:16,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 10 states have internal predecessors, (80), 5 states have call successors, (7), 4 states have call predecessors, (7), 5 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-13 17:35:16,188 INFO L276 IsEmpty]: Start isEmpty. Operand 1746 states and 2307 transitions. [2021-11-13 17:35:16,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-13 17:35:16,191 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:35:16,192 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:35:16,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-13 17:35:16,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:35:16,409 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:35:16,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:35:16,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1820910172, now seen corresponding path program 1 times [2021-11-13 17:35:16,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:35:16,411 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1770380624] [2021-11-13 17:35:16,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:35:16,411 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:35:16,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:35:16,412 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:35:16,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 17:35:16,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:16,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 17:35:16,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:35:16,752 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-13 17:35:16,752 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:35:16,893 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-13 17:35:16,893 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:35:16,893 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1770380624] [2021-11-13 17:35:16,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1770380624] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:35:16,894 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:35:16,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-13 17:35:16,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105924385] [2021-11-13 17:35:16,894 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:35:16,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:35:16,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:35:16,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:35:16,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:35:16,896 INFO L87 Difference]: Start difference. First operand 1746 states and 2307 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-13 17:35:17,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:35:17,054 INFO L93 Difference]: Finished difference Result 3569 states and 4879 transitions. [2021-11-13 17:35:17,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 17:35:17,055 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 68 [2021-11-13 17:35:17,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:35:17,067 INFO L225 Difference]: With dead ends: 3569 [2021-11-13 17:35:17,068 INFO L226 Difference]: Without dead ends: 1830 [2021-11-13 17:35:17,074 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:35:17,075 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 10 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.27ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.75ms IncrementalHoareTripleChecker+Time [2021-11-13 17:35:17,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 356 Invalid, 17 Unknown, 0 Unchecked, 1.27ms Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 16.75ms Time] [2021-11-13 17:35:17,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1830 states. [2021-11-13 17:35:17,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1830 to 1788. [2021-11-13 17:35:17,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1788 states, 1398 states have (on average 1.2610872675250357) internal successors, (1763), 1504 states have internal predecessors, (1763), 188 states have call successors, (188), 170 states have call predecessors, (188), 201 states have return successors, (398), 187 states have call predecessors, (398), 188 states have call successors, (398) [2021-11-13 17:35:17,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1788 states to 1788 states and 2349 transitions. [2021-11-13 17:35:17,231 INFO L78 Accepts]: Start accepts. Automaton has 1788 states and 2349 transitions. Word has length 68 [2021-11-13 17:35:17,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:35:17,232 INFO L470 AbstractCegarLoop]: Abstraction has 1788 states and 2349 transitions. [2021-11-13 17:35:17,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-13 17:35:17,232 INFO L276 IsEmpty]: Start isEmpty. Operand 1788 states and 2349 transitions. [2021-11-13 17:35:17,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-13 17:35:17,235 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:35:17,236 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:35:17,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 17:35:17,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:35:17,448 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:35:17,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:35:17,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1576663846, now seen corresponding path program 1 times [2021-11-13 17:35:17,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:35:17,450 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [248390538] [2021-11-13 17:35:17,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:35:17,450 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:35:17,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:35:17,451 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:35:17,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-13 17:35:17,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:17,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 17:35:17,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:35:17,766 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-13 17:35:17,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:35:17,943 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-13 17:35:17,943 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:35:17,943 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [248390538] [2021-11-13 17:35:17,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [248390538] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:35:17,944 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:35:17,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-13 17:35:17,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058684249] [2021-11-13 17:35:17,944 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:35:17,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:35:17,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:35:17,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:35:17,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:35:17,946 INFO L87 Difference]: Start difference. First operand 1788 states and 2349 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-13 17:35:18,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:35:18,100 INFO L93 Difference]: Finished difference Result 3453 states and 4640 transitions. [2021-11-13 17:35:18,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 17:35:18,101 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 68 [2021-11-13 17:35:18,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:35:18,113 INFO L225 Difference]: With dead ends: 3453 [2021-11-13 17:35:18,114 INFO L226 Difference]: Without dead ends: 1672 [2021-11-13 17:35:18,122 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:35:18,123 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 20 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.20ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.06ms IncrementalHoareTripleChecker+Time [2021-11-13 17:35:18,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 364 Invalid, 17 Unknown, 0 Unchecked, 1.20ms Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 16.06ms Time] [2021-11-13 17:35:18,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1672 states. [2021-11-13 17:35:18,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1672 to 1654. [2021-11-13 17:35:18,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1654 states, 1286 states have (on average 1.255054432348367) internal successors, (1614), 1381 states have internal predecessors, (1614), 181 states have call successors, (181), 163 states have call predecessors, (181), 186 states have return successors, (335), 176 states have call predecessors, (335), 181 states have call successors, (335) [2021-11-13 17:35:18,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1654 states to 1654 states and 2130 transitions. [2021-11-13 17:35:18,266 INFO L78 Accepts]: Start accepts. Automaton has 1654 states and 2130 transitions. Word has length 68 [2021-11-13 17:35:18,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:35:18,266 INFO L470 AbstractCegarLoop]: Abstraction has 1654 states and 2130 transitions. [2021-11-13 17:35:18,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-13 17:35:18,267 INFO L276 IsEmpty]: Start isEmpty. Operand 1654 states and 2130 transitions. [2021-11-13 17:35:18,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-13 17:35:18,280 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:35:18,280 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:35:18,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-13 17:35:18,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:35:18,493 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:35:18,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:35:18,494 INFO L85 PathProgramCache]: Analyzing trace with hash 653064270, now seen corresponding path program 1 times [2021-11-13 17:35:18,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:35:18,495 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [742867395] [2021-11-13 17:35:18,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:35:18,495 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:35:18,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:35:18,497 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:35:18,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-13 17:35:18,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:18,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 17:35:18,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:35:18,915 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-13 17:35:18,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:35:19,092 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-13 17:35:19,092 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:35:19,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [742867395] [2021-11-13 17:35:19,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [742867395] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:35:19,093 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:35:19,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 6] imperfect sequences [] total 6 [2021-11-13 17:35:19,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60339958] [2021-11-13 17:35:19,093 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:35:19,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:35:19,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:35:19,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:35:19,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:35:19,095 INFO L87 Difference]: Start difference. First operand 1654 states and 2130 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-13 17:35:19,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:35:19,374 INFO L93 Difference]: Finished difference Result 5210 states and 6756 transitions. [2021-11-13 17:35:19,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:35:19,375 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 72 [2021-11-13 17:35:19,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:35:19,400 INFO L225 Difference]: With dead ends: 5210 [2021-11-13 17:35:19,400 INFO L226 Difference]: Without dead ends: 3563 [2021-11-13 17:35:19,406 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-13 17:35:19,407 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 92 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.20ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.38ms IncrementalHoareTripleChecker+Time [2021-11-13 17:35:19,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 516 Invalid, 28 Unknown, 0 Unchecked, 2.20ms Time], IncrementalHoareTripleChecker [7 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 26.38ms Time] [2021-11-13 17:35:19,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3563 states. [2021-11-13 17:35:19,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3563 to 3230. [2021-11-13 17:35:19,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3230 states, 2519 states have (on average 1.2362048431917427) internal successors, (3114), 2695 states have internal predecessors, (3114), 345 states have call successors, (345), 317 states have call predecessors, (345), 365 states have return successors, (685), 348 states have call predecessors, (685), 345 states have call successors, (685) [2021-11-13 17:35:19,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3230 states to 3230 states and 4144 transitions. [2021-11-13 17:35:19,718 INFO L78 Accepts]: Start accepts. Automaton has 3230 states and 4144 transitions. Word has length 72 [2021-11-13 17:35:19,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:35:19,719 INFO L470 AbstractCegarLoop]: Abstraction has 3230 states and 4144 transitions. [2021-11-13 17:35:19,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-13 17:35:19,719 INFO L276 IsEmpty]: Start isEmpty. Operand 3230 states and 4144 transitions. [2021-11-13 17:35:19,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-13 17:35:19,722 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:35:19,722 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:35:19,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-13 17:35:19,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:35:19,934 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:35:19,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:35:19,935 INFO L85 PathProgramCache]: Analyzing trace with hash 2046496720, now seen corresponding path program 1 times [2021-11-13 17:35:19,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:35:19,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1500212249] [2021-11-13 17:35:19,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:35:19,936 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:35:19,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:35:19,937 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:35:19,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-13 17:35:20,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:20,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-13 17:35:20,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:35:20,437 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-13 17:35:20,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:35:20,914 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-13 17:35:20,914 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:35:20,915 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1500212249] [2021-11-13 17:35:20,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1500212249] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:35:20,915 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 17:35:20,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2021-11-13 17:35:20,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809780890] [2021-11-13 17:35:20,915 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 17:35:20,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-13 17:35:20,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:35:20,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-13 17:35:20,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-11-13 17:35:20,917 INFO L87 Difference]: Start difference. First operand 3230 states and 4144 transitions. Second operand has 15 states, 15 states have (on average 7.0) internal successors, (105), 14 states have internal predecessors, (105), 7 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2021-11-13 17:35:22,184 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:35:23,387 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:35:24,760 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:35:26,054 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:35:27,368 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:35:29,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:35:29,298 INFO L93 Difference]: Finished difference Result 8699 states and 11498 transitions. [2021-11-13 17:35:29,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-13 17:35:29,299 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 7.0) internal successors, (105), 14 states have internal predecessors, (105), 7 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) Word has length 76 [2021-11-13 17:35:29,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:35:29,347 INFO L225 Difference]: With dead ends: 8699 [2021-11-13 17:35:29,347 INFO L226 Difference]: Without dead ends: 5704 [2021-11-13 17:35:29,364 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=335, Invalid=1225, Unknown=0, NotChecked=0, Total=1560 [2021-11-13 17:35:29,364 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 718 mSDsluCounter, 842 mSDsCounter, 0 mSdLazyCounter, 1015 mSolverCounterSat, 270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7369.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 1008 SdHoareTripleChecker+Invalid, 1285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.94ms SdHoareTripleChecker+Time, 270 IncrementalHoareTripleChecker+Valid, 1015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7570.13ms IncrementalHoareTripleChecker+Time [2021-11-13 17:35:29,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [737 Valid, 1008 Invalid, 1285 Unknown, 0 Unchecked, 16.94ms Time], IncrementalHoareTripleChecker [270 Valid, 1015 Invalid, 0 Unknown, 0 Unchecked, 7570.13ms Time] [2021-11-13 17:35:29,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5704 states. [2021-11-13 17:35:29,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5704 to 5307. [2021-11-13 17:35:29,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5307 states, 4120 states have (on average 1.225485436893204) internal successors, (5049), 4407 states have internal predecessors, (5049), 582 states have call successors, (582), 536 states have call predecessors, (582), 604 states have return successors, (1209), 574 states have call predecessors, (1209), 582 states have call successors, (1209) [2021-11-13 17:35:29,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5307 states to 5307 states and 6840 transitions. [2021-11-13 17:35:29,875 INFO L78 Accepts]: Start accepts. Automaton has 5307 states and 6840 transitions. Word has length 76 [2021-11-13 17:35:29,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:35:29,877 INFO L470 AbstractCegarLoop]: Abstraction has 5307 states and 6840 transitions. [2021-11-13 17:35:29,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.0) internal successors, (105), 14 states have internal predecessors, (105), 7 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2021-11-13 17:35:29,878 INFO L276 IsEmpty]: Start isEmpty. Operand 5307 states and 6840 transitions. [2021-11-13 17:35:29,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-13 17:35:29,889 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:35:29,889 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:35:29,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-13 17:35:30,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:35:30,102 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:35:30,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:35:30,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1016756628, now seen corresponding path program 2 times [2021-11-13 17:35:30,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:35:30,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [553583853] [2021-11-13 17:35:30,104 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 17:35:30,104 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:35:30,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:35:30,105 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:35:30,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-13 17:35:31,486 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 17:35:31,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2021-11-13 17:35:31,487 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 17:35:33,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 17:35:33,549 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-11-13 17:35:33,549 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-13 17:35:33,550 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-13 17:35:33,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-13 17:35:33,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:35:33,775 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:35:33,778 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-13 17:35:33,870 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:203) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getProgramExecutionAsString(CounterExampleResult.java:155) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getLongDescription(CounterExampleResult.java:134) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:586) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:181) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-13 17:35:33,875 INFO L158 Benchmark]: Toolchain (without parser) took 33958.20ms. Allocated memory was 62.9MB in the beginning and 201.3MB in the end (delta: 138.4MB). Free memory was 41.6MB in the beginning and 84.9MB in the end (delta: -43.4MB). Peak memory consumption was 93.1MB. Max. memory is 16.1GB. [2021-11-13 17:35:33,876 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 62.9MB. Free memory was 42.8MB in the beginning and 42.7MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 17:35:33,876 INFO L158 Benchmark]: CACSL2BoogieTranslator took 642.64ms. Allocated memory is still 62.9MB. Free memory was 41.4MB in the beginning and 37.3MB in the end (delta: 4.2MB). Peak memory consumption was 11.8MB. Max. memory is 16.1GB. [2021-11-13 17:35:33,877 INFO L158 Benchmark]: Boogie Procedure Inliner took 87.59ms. Allocated memory is still 62.9MB. Free memory was 37.3MB in the beginning and 34.7MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 17:35:33,877 INFO L158 Benchmark]: Boogie Preprocessor took 73.06ms. Allocated memory is still 62.9MB. Free memory was 34.7MB in the beginning and 32.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 17:35:33,878 INFO L158 Benchmark]: RCFGBuilder took 2315.04ms. Allocated memory was 62.9MB in the beginning and 88.1MB in the end (delta: 25.2MB). Free memory was 32.4MB in the beginning and 50.1MB in the end (delta: -17.7MB). Peak memory consumption was 19.6MB. Max. memory is 16.1GB. [2021-11-13 17:35:33,879 INFO L158 Benchmark]: TraceAbstraction took 30831.73ms. Allocated memory was 88.1MB in the beginning and 201.3MB in the end (delta: 113.2MB). Free memory was 49.7MB in the beginning and 84.9MB in the end (delta: -35.3MB). Peak memory consumption was 76.3MB. Max. memory is 16.1GB. [2021-11-13 17:35:33,881 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 62.9MB. Free memory was 42.8MB in the beginning and 42.7MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 642.64ms. Allocated memory is still 62.9MB. Free memory was 41.4MB in the beginning and 37.3MB in the end (delta: 4.2MB). Peak memory consumption was 11.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 87.59ms. Allocated memory is still 62.9MB. Free memory was 37.3MB in the beginning and 34.7MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 73.06ms. Allocated memory is still 62.9MB. Free memory was 34.7MB in the beginning and 32.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 2315.04ms. Allocated memory was 62.9MB in the beginning and 88.1MB in the end (delta: 25.2MB). Free memory was 32.4MB in the beginning and 50.1MB in the end (delta: -17.7MB). Peak memory consumption was 19.6MB. Max. memory is 16.1GB. * TraceAbstraction took 30831.73ms. Allocated memory was 88.1MB in the beginning and 201.3MB in the end (delta: 113.2MB). Free memory was 49.7MB in the beginning and 84.9MB in the end (delta: -35.3MB). Peak memory consumption was 76.3MB. 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 - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-13 17:35:33,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8120aab1-3b6e-41ad-8bfa-f4fb7544d425/bin/uautomizer-YU5uOKAj3y/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 Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: NullPointerException: null