./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b94dbd3-edf1-4b1b-b76e-c9e633dd00fd/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b94dbd3-edf1-4b1b-b76e-c9e633dd00fd/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b94dbd3-edf1-4b1b-b76e-c9e633dd00fd/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b94dbd3-edf1-4b1b-b76e-c9e633dd00fd/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b94dbd3-edf1-4b1b-b76e-c9e633dd00fd/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b94dbd3-edf1-4b1b-b76e-c9e633dd00fd/bin/uautomizer-DrprNOufMa --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 08dbe1d8baf218c90d79c7aa96b8d857526ff0e474f0acb076b8cd9ca4d11ff2 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 22:17:02,952 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 22:17:02,953 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 22:17:02,983 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 22:17:02,983 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 22:17:02,985 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 22:17:02,987 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 22:17:02,989 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 22:17:02,991 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 22:17:02,992 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 22:17:02,993 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 22:17:02,995 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 22:17:02,995 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 22:17:02,996 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 22:17:02,998 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 22:17:02,999 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 22:17:03,000 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 22:17:03,001 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 22:17:03,003 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 22:17:03,006 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 22:17:03,008 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 22:17:03,009 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 22:17:03,010 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 22:17:03,011 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 22:17:03,014 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 22:17:03,015 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 22:17:03,015 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 22:17:03,016 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 22:17:03,017 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 22:17:03,018 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 22:17:03,018 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 22:17:03,019 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 22:17:03,020 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 22:17:03,021 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 22:17:03,022 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 22:17:03,022 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 22:17:03,023 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 22:17:03,023 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 22:17:03,023 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 22:17:03,024 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 22:17:03,024 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 22:17:03,025 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b94dbd3-edf1-4b1b-b76e-c9e633dd00fd/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 22:17:03,046 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 22:17:03,046 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 22:17:03,046 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 22:17:03,046 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 22:17:03,047 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 22:17:03,047 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 22:17:03,048 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 22:17:03,048 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 22:17:03,048 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 22:17:03,048 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 22:17:03,048 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 22:17:03,049 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 22:17:03,049 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 22:17:03,049 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 22:17:03,049 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 22:17:03,049 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 22:17:03,049 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 22:17:03,050 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 22:17:03,050 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 22:17:03,050 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 22:17:03,050 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 22:17:03,050 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 22:17:03,050 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 22:17:03,050 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 22:17:03,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:17:03,051 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 22:17:03,051 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 22:17:03,051 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 22:17:03,051 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 22:17:03,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 22:17:03,051 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 22:17:03,051 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 22:17:03,052 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 22:17:03,052 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 22:17:03,052 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_7b94dbd3-edf1-4b1b-b76e-c9e633dd00fd/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b94dbd3-edf1-4b1b-b76e-c9e633dd00fd/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 08dbe1d8baf218c90d79c7aa96b8d857526ff0e474f0acb076b8cd9ca4d11ff2 [2021-12-06 22:17:03,229 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 22:17:03,244 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 22:17:03,246 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 22:17:03,247 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 22:17:03,247 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 22:17:03,248 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b94dbd3-edf1-4b1b-b76e-c9e633dd00fd/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i [2021-12-06 22:17:03,289 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b94dbd3-edf1-4b1b-b76e-c9e633dd00fd/bin/uautomizer-DrprNOufMa/data/0172ea41e/a4b797714e5d4ec39fcd5dde0f0018db/FLAG8eeaa6f8d [2021-12-06 22:17:03,740 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 22:17:03,740 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b94dbd3-edf1-4b1b-b76e-c9e633dd00fd/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i [2021-12-06 22:17:03,754 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b94dbd3-edf1-4b1b-b76e-c9e633dd00fd/bin/uautomizer-DrprNOufMa/data/0172ea41e/a4b797714e5d4ec39fcd5dde0f0018db/FLAG8eeaa6f8d [2021-12-06 22:17:03,765 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b94dbd3-edf1-4b1b-b76e-c9e633dd00fd/bin/uautomizer-DrprNOufMa/data/0172ea41e/a4b797714e5d4ec39fcd5dde0f0018db [2021-12-06 22:17:03,767 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 22:17:03,768 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 22:17:03,769 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 22:17:03,769 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 22:17:03,772 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 22:17:03,772 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:17:03" (1/1) ... [2021-12-06 22:17:03,773 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@371d5994 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:17:03, skipping insertion in model container [2021-12-06 22:17:03,773 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:17:03" (1/1) ... [2021-12-06 22:17:03,781 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 22:17:03,825 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 22:17:04,060 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b94dbd3-edf1-4b1b-b76e-c9e633dd00fd/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i[33021,33034] [2021-12-06 22:17:04,141 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:17:04,147 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 22:17:04,184 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b94dbd3-edf1-4b1b-b76e-c9e633dd00fd/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i[33021,33034] [2021-12-06 22:17:04,252 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:17:04,289 INFO L208 MainTranslator]: Completed translation [2021-12-06 22:17:04,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:17:04 WrapperNode [2021-12-06 22:17:04,290 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 22:17:04,290 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 22:17:04,291 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 22:17:04,291 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 22:17:04,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:17:04" (1/1) ... [2021-12-06 22:17:04,326 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:17:04" (1/1) ... [2021-12-06 22:17:04,375 INFO L137 Inliner]: procedures = 177, calls = 349, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1153 [2021-12-06 22:17:04,375 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 22:17:04,376 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 22:17:04,376 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 22:17:04,376 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 22:17:04,385 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:17:04" (1/1) ... [2021-12-06 22:17:04,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:17:04" (1/1) ... [2021-12-06 22:17:04,394 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:17:04" (1/1) ... [2021-12-06 22:17:04,394 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:17:04" (1/1) ... [2021-12-06 22:17:04,442 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:17:04" (1/1) ... [2021-12-06 22:17:04,453 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:17:04" (1/1) ... [2021-12-06 22:17:04,458 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:17:04" (1/1) ... [2021-12-06 22:17:04,467 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 22:17:04,467 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 22:17:04,468 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 22:17:04,468 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 22:17:04,468 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:17:04" (1/1) ... [2021-12-06 22:17:04,476 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:17:04,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b94dbd3-edf1-4b1b-b76e-c9e633dd00fd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:17:04,499 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b94dbd3-edf1-4b1b-b76e-c9e633dd00fd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 22:17:04,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b94dbd3-edf1-4b1b-b76e-c9e633dd00fd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 22:17:04,530 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 22:17:04,530 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-06 22:17:04,530 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-06 22:17:04,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 22:17:04,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-06 22:17:04,530 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-06 22:17:04,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 22:17:04,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 22:17:04,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 22:17:04,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 22:17:04,531 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 22:17:04,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 22:17:04,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 22:17:04,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 22:17:04,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 22:17:04,698 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 22:17:04,700 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 22:17:05,507 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 22:17:05,514 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 22:17:05,514 INFO L301 CfgBuilder]: Removed 60 assume(true) statements. [2021-12-06 22:17:05,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:17:05 BoogieIcfgContainer [2021-12-06 22:17:05,516 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 22:17:05,517 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 22:17:05,517 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 22:17:05,519 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 22:17:05,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 10:17:03" (1/3) ... [2021-12-06 22:17:05,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54ece0ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:17:05, skipping insertion in model container [2021-12-06 22:17:05,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:17:04" (2/3) ... [2021-12-06 22:17:05,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54ece0ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:17:05, skipping insertion in model container [2021-12-06 22:17:05,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:17:05" (3/3) ... [2021-12-06 22:17:05,521 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test4-1.i [2021-12-06 22:17:05,525 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 22:17:05,526 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 22:17:05,561 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 22:17:05,566 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 [2021-12-06 22:17:05,566 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 22:17:05,585 INFO L276 IsEmpty]: Start isEmpty. Operand has 211 states, 191 states have (on average 1.6806282722513088) internal successors, (321), 202 states have internal predecessors, (321), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-12-06 22:17:05,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-06 22:17:05,588 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:17:05,589 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:17:05,589 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:17:05,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:17:05,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1530402564, now seen corresponding path program 1 times [2021-12-06 22:17:05,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:17:05,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540529921] [2021-12-06 22:17:05,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:17:05,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:17:05,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:05,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:17:05,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:17:05,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540529921] [2021-12-06 22:17:05,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540529921] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:17:05,733 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:17:05,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:17:05,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561789650] [2021-12-06 22:17:05,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:17:05,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:17:05,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:17:05,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:17:05,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:17:05,769 INFO L87 Difference]: Start difference. First operand has 211 states, 191 states have (on average 1.6806282722513088) internal successors, (321), 202 states have internal predecessors, (321), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2021-12-06 22:17:05,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:17:05,886 INFO L93 Difference]: Finished difference Result 590 states and 1005 transitions. [2021-12-06 22:17:05,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:17:05,889 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 10 [2021-12-06 22:17:05,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:17:05,900 INFO L225 Difference]: With dead ends: 590 [2021-12-06 22:17:05,900 INFO L226 Difference]: Without dead ends: 377 [2021-12-06 22:17:05,904 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 [2021-12-06 22:17:05,906 INFO L933 BasicCegarLoop]: 291 mSDtfsCounter, 211 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:17:05,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [217 Valid, 572 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:17:05,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2021-12-06 22:17:05,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 208. [2021-12-06 22:17:05,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 189 states have (on average 1.3227513227513228) internal successors, (250), 199 states have internal predecessors, (250), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-12-06 22:17:05,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 282 transitions. [2021-12-06 22:17:05,956 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 282 transitions. Word has length 10 [2021-12-06 22:17:05,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:17:05,956 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 282 transitions. [2021-12-06 22:17:05,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2021-12-06 22:17:05,957 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 282 transitions. [2021-12-06 22:17:05,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-06 22:17:05,961 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:17:05,962 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, 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, 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] [2021-12-06 22:17:05,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 22:17:05,962 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:17:05,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:17:05,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1947342789, now seen corresponding path program 1 times [2021-12-06 22:17:05,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:17:05,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011125341] [2021-12-06 22:17:05,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:17:05,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:17:06,099 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 22:17:06,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [595081648] [2021-12-06 22:17:06,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:17:06,100 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:17:06,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b94dbd3-edf1-4b1b-b76e-c9e633dd00fd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:17:06,101 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b94dbd3-edf1-4b1b-b76e-c9e633dd00fd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:17:06,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b94dbd3-edf1-4b1b-b76e-c9e633dd00fd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 22:17:06,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:06,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 2973 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 22:17:06,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:17:06,888 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:17:06,888 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:17:06,888 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:17:06,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011125341] [2021-12-06 22:17:06,888 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 22:17:06,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595081648] [2021-12-06 22:17:06,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [595081648] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:17:06,889 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:17:06,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:17:06,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33188912] [2021-12-06 22:17:06,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:17:06,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:17:06,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:17:06,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:17:06,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:17:06,891 INFO L87 Difference]: Start difference. First operand 208 states and 282 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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) [2021-12-06 22:17:06,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:17:06,947 INFO L93 Difference]: Finished difference Result 434 states and 592 transitions. [2021-12-06 22:17:06,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:17:06,948 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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 108 [2021-12-06 22:17:06,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:17:06,950 INFO L225 Difference]: With dead ends: 434 [2021-12-06 22:17:06,950 INFO L226 Difference]: Without dead ends: 229 [2021-12-06 22:17:06,951 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:17:06,952 INFO L933 BasicCegarLoop]: 261 mSDtfsCounter, 9 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:17:06,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 507 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:17:06,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-12-06 22:17:06,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 228. [2021-12-06 22:17:06,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 209 states have (on average 1.291866028708134) internal successors, (270), 219 states have internal predecessors, (270), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-12-06 22:17:06,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 302 transitions. [2021-12-06 22:17:06,967 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 302 transitions. Word has length 108 [2021-12-06 22:17:06,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:17:06,968 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 302 transitions. [2021-12-06 22:17:06,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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) [2021-12-06 22:17:06,968 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 302 transitions. [2021-12-06 22:17:06,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-06 22:17:06,972 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:17:06,972 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, 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, 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] [2021-12-06 22:17:06,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b94dbd3-edf1-4b1b-b76e-c9e633dd00fd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 22:17:07,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b94dbd3-edf1-4b1b-b76e-c9e633dd00fd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-12-06 22:17:07,174 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:17:07,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:17:07,177 INFO L85 PathProgramCache]: Analyzing trace with hash -728649593, now seen corresponding path program 1 times [2021-12-06 22:17:07,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:17:07,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562314015] [2021-12-06 22:17:07,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:17:07,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:17:07,407 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 22:17:07,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [322062852] [2021-12-06 22:17:07,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:17:07,407 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:17:07,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b94dbd3-edf1-4b1b-b76e-c9e633dd00fd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:17:07,409 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b94dbd3-edf1-4b1b-b76e-c9e633dd00fd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:17:07,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b94dbd3-edf1-4b1b-b76e-c9e633dd00fd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 22:17:08,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:08,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 2975 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 22:17:08,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:17:08,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:17:08,141 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:17:08,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:17:08,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562314015] [2021-12-06 22:17:08,141 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 22:17:08,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322062852] [2021-12-06 22:17:08,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322062852] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:17:08,141 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:17:08,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:17:08,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109366118] [2021-12-06 22:17:08,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:17:08,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:17:08,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:17:08,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:17:08,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:17:08,143 INFO L87 Difference]: Start difference. First operand 228 states and 302 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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) [2021-12-06 22:17:08,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:17:08,186 INFO L93 Difference]: Finished difference Result 474 states and 632 transitions. [2021-12-06 22:17:08,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:17:08,187 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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 108 [2021-12-06 22:17:08,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:17:08,189 INFO L225 Difference]: With dead ends: 474 [2021-12-06 22:17:08,189 INFO L226 Difference]: Without dead ends: 249 [2021-12-06 22:17:08,190 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:17:08,191 INFO L933 BasicCegarLoop]: 263 mSDtfsCounter, 8 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:17:08,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 509 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:17:08,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2021-12-06 22:17:08,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 248. [2021-12-06 22:17:08,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 229 states have (on average 1.2663755458515285) internal successors, (290), 239 states have internal predecessors, (290), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-12-06 22:17:08,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 322 transitions. [2021-12-06 22:17:08,204 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 322 transitions. Word has length 108 [2021-12-06 22:17:08,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:17:08,204 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 322 transitions. [2021-12-06 22:17:08,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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) [2021-12-06 22:17:08,205 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 322 transitions. [2021-12-06 22:17:08,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-06 22:17:08,207 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:17:08,207 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, 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, 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] [2021-12-06 22:17:08,231 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b94dbd3-edf1-4b1b-b76e-c9e633dd00fd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 22:17:08,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b94dbd3-edf1-4b1b-b76e-c9e633dd00fd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:17:08,409 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:17:08,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:17:08,411 INFO L85 PathProgramCache]: Analyzing trace with hash -656263035, now seen corresponding path program 1 times [2021-12-06 22:17:08,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:17:08,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817184913] [2021-12-06 22:17:08,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:17:08,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:17:08,554 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 22:17:08,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [406818870] [2021-12-06 22:17:08,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:17:08,554 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:17:08,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b94dbd3-edf1-4b1b-b76e-c9e633dd00fd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:17:08,555 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b94dbd3-edf1-4b1b-b76e-c9e633dd00fd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:17:08,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b94dbd3-edf1-4b1b-b76e-c9e633dd00fd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 22:17:09,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:09,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 2977 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 22:17:09,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:17:09,285 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:17:09,285 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:17:09,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:17:09,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817184913] [2021-12-06 22:17:09,285 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 22:17:09,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406818870] [2021-12-06 22:17:09,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406818870] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:17:09,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:17:09,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 22:17:09,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045110150] [2021-12-06 22:17:09,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:17:09,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:17:09,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:17:09,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:17:09,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:17:09,288 INFO L87 Difference]: Start difference. First operand 248 states and 322 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 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) [2021-12-06 22:17:09,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:17:09,339 INFO L93 Difference]: Finished difference Result 485 states and 633 transitions. [2021-12-06 22:17:09,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 22:17:09,340 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 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 108 [2021-12-06 22:17:09,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:17:09,342 INFO L225 Difference]: With dead ends: 485 [2021-12-06 22:17:09,342 INFO L226 Difference]: Without dead ends: 240 [2021-12-06 22:17:09,343 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:17:09,344 INFO L933 BasicCegarLoop]: 260 mSDtfsCounter, 228 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:17:09,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [244 Valid, 540 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:17:09,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-12-06 22:17:09,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 234. [2021-12-06 22:17:09,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 215 states have (on average 1.2511627906976743) internal successors, (269), 225 states have internal predecessors, (269), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-12-06 22:17:09,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 301 transitions. [2021-12-06 22:17:09,360 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 301 transitions. Word has length 108 [2021-12-06 22:17:09,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:17:09,360 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 301 transitions. [2021-12-06 22:17:09,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 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) [2021-12-06 22:17:09,361 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 301 transitions. [2021-12-06 22:17:09,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-06 22:17:09,363 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:17:09,363 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, 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, 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] [2021-12-06 22:17:09,388 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b94dbd3-edf1-4b1b-b76e-c9e633dd00fd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 22:17:09,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b94dbd3-edf1-4b1b-b76e-c9e633dd00fd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:17:09,565 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:17:09,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:17:09,566 INFO L85 PathProgramCache]: Analyzing trace with hash -2048110665, now seen corresponding path program 1 times [2021-12-06 22:17:09,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:17:09,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708786420] [2021-12-06 22:17:09,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:17:09,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:17:09,706 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 22:17:09,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [469957959] [2021-12-06 22:17:09,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:17:09,706 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:17:09,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b94dbd3-edf1-4b1b-b76e-c9e633dd00fd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:17:09,707 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b94dbd3-edf1-4b1b-b76e-c9e633dd00fd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:17:09,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b94dbd3-edf1-4b1b-b76e-c9e633dd00fd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 22:17:10,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:10,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 2963 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 22:17:10,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:17:10,517 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:17:10,517 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:17:10,518 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:17:10,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708786420] [2021-12-06 22:17:10,518 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 22:17:10,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469957959] [2021-12-06 22:17:10,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469957959] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:17:10,518 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:17:10,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 22:17:10,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921022812] [2021-12-06 22:17:10,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:17:10,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:17:10,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:17:10,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:17:10,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:17:10,520 INFO L87 Difference]: Start difference. First operand 234 states and 301 transitions. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 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) [2021-12-06 22:17:10,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:17:10,578 INFO L93 Difference]: Finished difference Result 546 states and 700 transitions. [2021-12-06 22:17:10,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 22:17:10,579 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 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 108 [2021-12-06 22:17:10,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:17:10,581 INFO L225 Difference]: With dead ends: 546 [2021-12-06 22:17:10,581 INFO L226 Difference]: Without dead ends: 315 [2021-12-06 22:17:10,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:17:10,582 INFO L933 BasicCegarLoop]: 356 mSDtfsCounter, 226 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:17:10,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 835 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:17:10,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2021-12-06 22:17:10,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 220. [2021-12-06 22:17:10,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 201 states have (on average 1.2338308457711442) internal successors, (248), 211 states have internal predecessors, (248), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-12-06 22:17:10,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 280 transitions. [2021-12-06 22:17:10,593 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 280 transitions. Word has length 108 [2021-12-06 22:17:10,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:17:10,593 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 280 transitions. [2021-12-06 22:17:10,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 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) [2021-12-06 22:17:10,593 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 280 transitions. [2021-12-06 22:17:10,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-06 22:17:10,594 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:17:10,595 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, 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, 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] [2021-12-06 22:17:10,620 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b94dbd3-edf1-4b1b-b76e-c9e633dd00fd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 22:17:10,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b94dbd3-edf1-4b1b-b76e-c9e633dd00fd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:17:10,797 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:17:10,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:17:10,799 INFO L85 PathProgramCache]: Analyzing trace with hash 452622147, now seen corresponding path program 1 times [2021-12-06 22:17:10,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:17:10,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919974173] [2021-12-06 22:17:10,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:17:10,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:17:10,947 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 22:17:10,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [28936442] [2021-12-06 22:17:10,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:17:10,947 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:17:10,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b94dbd3-edf1-4b1b-b76e-c9e633dd00fd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:17:10,948 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b94dbd3-edf1-4b1b-b76e-c9e633dd00fd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:17:10,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b94dbd3-edf1-4b1b-b76e-c9e633dd00fd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 22:17:11,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:11,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 2951 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 22:17:11,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:17:11,883 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:17:11,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:17:12,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:17:12,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:17:12,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919974173] [2021-12-06 22:17:12,014 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 22:17:12,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28936442] [2021-12-06 22:17:12,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [28936442] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:17:12,014 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 22:17:12,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-12-06 22:17:12,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178155466] [2021-12-06 22:17:12,014 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 22:17:12,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:17:12,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:17:12,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:17:12,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:17:12,015 INFO L87 Difference]: Start difference. First operand 220 states and 280 transitions. Second operand has 6 states, 6 states have (on average 34.5) internal successors, (207), 6 states have internal predecessors, (207), 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) [2021-12-06 22:17:12,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:17:12,092 INFO L93 Difference]: Finished difference Result 797 states and 999 transitions. [2021-12-06 22:17:12,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 22:17:12,093 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 34.5) internal successors, (207), 6 states have internal predecessors, (207), 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 108 [2021-12-06 22:17:12,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:17:12,098 INFO L225 Difference]: With dead ends: 797 [2021-12-06 22:17:12,098 INFO L226 Difference]: Without dead ends: 766 [2021-12-06 22:17:12,099 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:17:12,100 INFO L933 BasicCegarLoop]: 401 mSDtfsCounter, 1150 mSDsluCounter, 775 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1174 SdHoareTripleChecker+Valid, 1176 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:17:12,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1174 Valid, 1176 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:17:12,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2021-12-06 22:17:12,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 766. [2021-12-06 22:17:12,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 766 states, 729 states have (on average 1.2043895747599451) internal successors, (878), 739 states have internal predecessors, (878), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 25 states have call predecessors, (34), 34 states have call successors, (34) [2021-12-06 22:17:12,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 946 transitions. [2021-12-06 22:17:12,136 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 946 transitions. Word has length 108 [2021-12-06 22:17:12,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:17:12,137 INFO L470 AbstractCegarLoop]: Abstraction has 766 states and 946 transitions. [2021-12-06 22:17:12,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.5) internal successors, (207), 6 states have internal predecessors, (207), 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) [2021-12-06 22:17:12,137 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 946 transitions. [2021-12-06 22:17:12,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2021-12-06 22:17:12,152 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:17:12,152 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:17:12,179 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b94dbd3-edf1-4b1b-b76e-c9e633dd00fd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 22:17:12,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b94dbd3-edf1-4b1b-b76e-c9e633dd00fd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:17:12,353 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:17:12,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:17:12,353 INFO L85 PathProgramCache]: Analyzing trace with hash -2048677992, now seen corresponding path program 2 times [2021-12-06 22:17:12,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:17:12,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63432278] [2021-12-06 22:17:12,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:17:12,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:17:12,730 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 22:17:12,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1845192002] [2021-12-06 22:17:12,731 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 22:17:12,731 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:17:12,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b94dbd3-edf1-4b1b-b76e-c9e633dd00fd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:17:12,732 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b94dbd3-edf1-4b1b-b76e-c9e633dd00fd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:17:12,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b94dbd3-edf1-4b1b-b76e-c9e633dd00fd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 22:17:13,761 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-06 22:17:13,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:17:13,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 22:17:13,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:17:14,796 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 592 trivial. 0 not checked. [2021-12-06 22:17:14,796 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:17:14,797 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:17:14,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63432278] [2021-12-06 22:17:14,797 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 22:17:14,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845192002] [2021-12-06 22:17:14,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845192002] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:17:14,797 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:17:14,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 22:17:14,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931955365] [2021-12-06 22:17:14,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:17:14,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:17:14,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:17:14,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:17:14,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:17:14,799 INFO L87 Difference]: Start difference. First operand 766 states and 946 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 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) [2021-12-06 22:17:15,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:17:15,049 INFO L93 Difference]: Finished difference Result 1385 states and 1717 transitions. [2021-12-06 22:17:15,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:17:15,050 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 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 402 [2021-12-06 22:17:15,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:17:15,054 INFO L225 Difference]: With dead ends: 1385 [2021-12-06 22:17:15,054 INFO L226 Difference]: Without dead ends: 764 [2021-12-06 22:17:15,055 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 399 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:17:15,056 INFO L933 BasicCegarLoop]: 269 mSDtfsCounter, 65 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 22:17:15,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 731 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 22:17:15,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2021-12-06 22:17:15,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 764. [2021-12-06 22:17:15,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 764 states, 727 states have (on average 1.203576341127923) internal successors, (875), 737 states have internal predecessors, (875), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 25 states have call predecessors, (34), 34 states have call successors, (34) [2021-12-06 22:17:15,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 943 transitions. [2021-12-06 22:17:15,080 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 943 transitions. Word has length 402 [2021-12-06 22:17:15,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:17:15,080 INFO L470 AbstractCegarLoop]: Abstraction has 764 states and 943 transitions. [2021-12-06 22:17:15,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 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) [2021-12-06 22:17:15,080 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 943 transitions. [2021-12-06 22:17:15,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2021-12-06 22:17:15,086 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:17:15,086 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2021-12-06 22:17:15,111 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b94dbd3-edf1-4b1b-b76e-c9e633dd00fd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 22:17:15,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b94dbd3-edf1-4b1b-b76e-c9e633dd00fd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:17:15,287 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:17:15,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:17:15,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1854420055, now seen corresponding path program 1 times [2021-12-06 22:17:15,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:17:15,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835749074] [2021-12-06 22:17:15,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:17:15,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:17:15,630 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 22:17:15,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2063163021] [2021-12-06 22:17:15,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:17:15,630 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:17:15,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b94dbd3-edf1-4b1b-b76e-c9e633dd00fd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:17:15,631 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b94dbd3-edf1-4b1b-b76e-c9e633dd00fd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:17:15,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b94dbd3-edf1-4b1b-b76e-c9e633dd00fd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 22:17:17,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:17,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 10743 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 22:17:18,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:17:18,429 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 0 proven. 586 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 22:17:18,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:17:18,872 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 0 proven. 586 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 22:17:18,872 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:17:18,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835749074] [2021-12-06 22:17:18,873 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 22:17:18,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063163021] [2021-12-06 22:17:18,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063163021] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:17:18,873 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 22:17:18,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-12-06 22:17:18,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559389182] [2021-12-06 22:17:18,873 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 22:17:18,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 22:17:18,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:17:18,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 22:17:18,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-12-06 22:17:18,875 INFO L87 Difference]: Start difference. First operand 764 states and 943 transitions. Second operand has 12 states, 12 states have (on average 67.33333333333333) internal successors, (808), 12 states have internal predecessors, (808), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 22:17:19,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:17:19,072 INFO L93 Difference]: Finished difference Result 1887 states and 2331 transitions. [2021-12-06 22:17:19,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 22:17:19,073 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 67.33333333333333) internal successors, (808), 12 states have internal predecessors, (808), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 417 [2021-12-06 22:17:19,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:17:19,086 INFO L225 Difference]: With dead ends: 1887 [2021-12-06 22:17:19,086 INFO L226 Difference]: Without dead ends: 1856 [2021-12-06 22:17:19,087 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 832 GetRequests, 822 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-12-06 22:17:19,088 INFO L933 BasicCegarLoop]: 376 mSDtfsCounter, 2345 mSDsluCounter, 2304 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2401 SdHoareTripleChecker+Valid, 2680 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:17:19,088 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2401 Valid, 2680 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:17:19,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1856 states. [2021-12-06 22:17:19,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1856 to 1856. [2021-12-06 22:17:19,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1856 states, 1783 states have (on average 1.1974200785193494) internal successors, (2135), 1793 states have internal predecessors, (2135), 70 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (70), 61 states have call predecessors, (70), 70 states have call successors, (70) [2021-12-06 22:17:19,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1856 states to 1856 states and 2275 transitions. [2021-12-06 22:17:19,144 INFO L78 Accepts]: Start accepts. Automaton has 1856 states and 2275 transitions. Word has length 417 [2021-12-06 22:17:19,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:17:19,145 INFO L470 AbstractCegarLoop]: Abstraction has 1856 states and 2275 transitions. [2021-12-06 22:17:19,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 67.33333333333333) internal successors, (808), 12 states have internal predecessors, (808), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 22:17:19,145 INFO L276 IsEmpty]: Start isEmpty. Operand 1856 states and 2275 transitions. [2021-12-06 22:17:19,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1006 [2021-12-06 22:17:19,155 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:17:19,156 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 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] [2021-12-06 22:17:19,213 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b94dbd3-edf1-4b1b-b76e-c9e633dd00fd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 22:17:19,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b94dbd3-edf1-4b1b-b76e-c9e633dd00fd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-12-06 22:17:19,357 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:17:19,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:17:19,358 INFO L85 PathProgramCache]: Analyzing trace with hash 240290707, now seen corresponding path program 2 times [2021-12-06 22:17:19,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:17:19,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299265575] [2021-12-06 22:17:19,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:17:19,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:17:20,199 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 22:17:20,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2030071989] [2021-12-06 22:17:20,199 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 22:17:20,200 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:17:20,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b94dbd3-edf1-4b1b-b76e-c9e633dd00fd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:17:20,200 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b94dbd3-edf1-4b1b-b76e-c9e633dd00fd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:17:20,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b94dbd3-edf1-4b1b-b76e-c9e633dd00fd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 22:17:25,819 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 22:17:25,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:17:26,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 28053 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 22:17:26,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:17:26,720 INFO L134 CoverageAnalysis]: Checked inductivity of 4406 backedges. 325 proven. 0 refuted. 0 times theorem prover too weak. 4081 trivial. 0 not checked. [2021-12-06 22:17:26,721 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:17:26,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:17:26,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299265575] [2021-12-06 22:17:26,721 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 22:17:26,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030071989] [2021-12-06 22:17:26,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030071989] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:17:26,721 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:17:26,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:17:26,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357420418] [2021-12-06 22:17:26,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:17:26,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:17:26,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:17:26,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:17:26,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:17:26,724 INFO L87 Difference]: Start difference. First operand 1856 states and 2275 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 22:17:26,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:17:26,797 INFO L93 Difference]: Finished difference Result 3654 states and 4484 transitions. [2021-12-06 22:17:26,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:17:26,800 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 1005 [2021-12-06 22:17:26,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:17:26,807 INFO L225 Difference]: With dead ends: 3654 [2021-12-06 22:17:26,807 INFO L226 Difference]: Without dead ends: 1854 [2021-12-06 22:17:26,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1004 GetRequests, 1003 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:17:26,810 INFO L933 BasicCegarLoop]: 266 mSDtfsCounter, 15 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:17:26,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 518 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:17:26,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1854 states. [2021-12-06 22:17:26,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1854 to 1854. [2021-12-06 22:17:26,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1854 states, 1781 states have (on average 1.197080291970803) internal successors, (2132), 1791 states have internal predecessors, (2132), 70 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (70), 61 states have call predecessors, (70), 70 states have call successors, (70) [2021-12-06 22:17:26,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1854 states to 1854 states and 2272 transitions. [2021-12-06 22:17:26,854 INFO L78 Accepts]: Start accepts. Automaton has 1854 states and 2272 transitions. Word has length 1005 [2021-12-06 22:17:26,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:17:26,854 INFO L470 AbstractCegarLoop]: Abstraction has 1854 states and 2272 transitions. [2021-12-06 22:17:26,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 22:17:26,854 INFO L276 IsEmpty]: Start isEmpty. Operand 1854 states and 2272 transitions. [2021-12-06 22:17:26,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1021 [2021-12-06 22:17:26,865 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:17:26,865 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 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] [2021-12-06 22:17:26,957 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b94dbd3-edf1-4b1b-b76e-c9e633dd00fd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-06 22:17:27,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b94dbd3-edf1-4b1b-b76e-c9e633dd00fd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-12-06 22:17:27,066 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:17:27,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:17:27,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1485403054, now seen corresponding path program 1 times [2021-12-06 22:17:27,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:17:27,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852304159] [2021-12-06 22:17:27,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:17:27,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:17:27,914 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 22:17:27,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [583116736] [2021-12-06 22:17:27,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:17:27,915 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:17:27,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b94dbd3-edf1-4b1b-b76e-c9e633dd00fd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:17:27,915 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b94dbd3-edf1-4b1b-b76e-c9e633dd00fd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:17:27,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b94dbd3-edf1-4b1b-b76e-c9e633dd00fd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process