./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-2.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_0287a874-7865-41e2-84a9-2d672680e947/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0287a874-7865-41e2-84a9-2d672680e947/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_0287a874-7865-41e2-84a9-2d672680e947/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0287a874-7865-41e2-84a9-2d672680e947/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0287a874-7865-41e2-84a9-2d672680e947/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_0287a874-7865-41e2-84a9-2d672680e947/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 e095bb5ea0d924a9f9ab04ab393eec77de9b1aa4e50357711d33ebab16e651dd --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 01:09:14,798 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 01:09:14,800 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 01:09:14,823 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 01:09:14,823 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 01:09:14,824 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 01:09:14,826 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 01:09:14,827 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 01:09:14,829 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 01:09:14,830 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 01:09:14,831 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 01:09:14,832 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 01:09:14,832 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 01:09:14,833 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 01:09:14,834 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 01:09:14,835 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 01:09:14,836 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 01:09:14,837 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 01:09:14,838 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 01:09:14,840 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 01:09:14,842 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 01:09:14,843 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 01:09:14,845 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 01:09:14,846 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 01:09:14,849 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 01:09:14,850 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 01:09:14,850 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 01:09:14,851 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 01:09:14,852 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 01:09:14,853 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 01:09:14,853 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 01:09:14,854 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 01:09:14,855 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 01:09:14,856 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 01:09:14,857 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 01:09:14,857 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 01:09:14,858 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 01:09:14,858 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 01:09:14,858 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 01:09:14,858 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 01:09:14,859 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 01:09:14,860 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0287a874-7865-41e2-84a9-2d672680e947/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-07 01:09:14,882 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 01:09:14,882 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 01:09:14,882 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 01:09:14,883 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 01:09:14,883 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-07 01:09:14,883 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-07 01:09:14,884 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 01:09:14,884 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 01:09:14,884 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 01:09:14,884 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 01:09:14,884 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-07 01:09:14,885 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-07 01:09:14,885 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-07 01:09:14,885 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 01:09:14,885 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-07 01:09:14,885 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-07 01:09:14,885 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-07 01:09:14,885 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-07 01:09:14,886 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-07 01:09:14,886 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 01:09:14,886 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-07 01:09:14,886 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 01:09:14,886 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 01:09:14,886 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-07 01:09:14,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 01:09:14,886 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 01:09:14,887 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-07 01:09:14,887 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-07 01:09:14,887 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-07 01:09:14,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-07 01:09:14,887 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-07 01:09:14,887 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-07 01:09:14,887 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-07 01:09:14,888 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 01:09:14,888 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_0287a874-7865-41e2-84a9-2d672680e947/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0287a874-7865-41e2-84a9-2d672680e947/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e095bb5ea0d924a9f9ab04ab393eec77de9b1aa4e50357711d33ebab16e651dd [2021-12-07 01:09:15,066 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 01:09:15,081 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 01:09:15,082 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 01:09:15,083 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 01:09:15,084 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 01:09:15,084 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0287a874-7865-41e2-84a9-2d672680e947/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-2.i [2021-12-07 01:09:15,128 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0287a874-7865-41e2-84a9-2d672680e947/bin/uautomizer-DrprNOufMa/data/b43a12abe/d385ad230fbb48f2a51c46993f30c47f/FLAGa5e095db3 [2021-12-07 01:09:15,596 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 01:09:15,596 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0287a874-7865-41e2-84a9-2d672680e947/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-2.i [2021-12-07 01:09:15,613 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0287a874-7865-41e2-84a9-2d672680e947/bin/uautomizer-DrprNOufMa/data/b43a12abe/d385ad230fbb48f2a51c46993f30c47f/FLAGa5e095db3 [2021-12-07 01:09:16,109 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0287a874-7865-41e2-84a9-2d672680e947/bin/uautomizer-DrprNOufMa/data/b43a12abe/d385ad230fbb48f2a51c46993f30c47f [2021-12-07 01:09:16,111 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 01:09:16,112 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 01:09:16,113 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 01:09:16,114 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 01:09:16,116 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 01:09:16,116 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:09:16" (1/1) ... [2021-12-07 01:09:16,117 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@858982d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:09:16, skipping insertion in model container [2021-12-07 01:09:16,117 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:09:16" (1/1) ... [2021-12-07 01:09:16,122 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 01:09:16,156 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 01:09:16,384 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_0287a874-7865-41e2-84a9-2d672680e947/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-2.i[33021,33034] [2021-12-07 01:09:16,473 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 01:09:16,479 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 01:09:16,504 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_0287a874-7865-41e2-84a9-2d672680e947/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-2.i[33021,33034] [2021-12-07 01:09:16,579 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 01:09:16,618 INFO L208 MainTranslator]: Completed translation [2021-12-07 01:09:16,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:09:16 WrapperNode [2021-12-07 01:09:16,619 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 01:09:16,620 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 01:09:16,620 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 01:09:16,620 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 01:09:16,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:09:16" (1/1) ... [2021-12-07 01:09:16,653 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:09:16" (1/1) ... [2021-12-07 01:09:16,698 INFO L137 Inliner]: procedures = 177, calls = 400, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1308 [2021-12-07 01:09:16,698 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 01:09:16,699 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 01:09:16,699 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 01:09:16,699 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 01:09:16,705 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:09:16" (1/1) ... [2021-12-07 01:09:16,705 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:09:16" (1/1) ... [2021-12-07 01:09:16,716 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:09:16" (1/1) ... [2021-12-07 01:09:16,716 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:09:16" (1/1) ... [2021-12-07 01:09:16,757 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:09:16" (1/1) ... [2021-12-07 01:09:16,768 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:09:16" (1/1) ... [2021-12-07 01:09:16,773 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:09:16" (1/1) ... [2021-12-07 01:09:16,784 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 01:09:16,785 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 01:09:16,785 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 01:09:16,785 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 01:09:16,786 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:09:16" (1/1) ... [2021-12-07 01:09:16,793 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 01:09:16,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0287a874-7865-41e2-84a9-2d672680e947/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:09:16,817 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0287a874-7865-41e2-84a9-2d672680e947/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-07 01:09:16,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0287a874-7865-41e2-84a9-2d672680e947/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-07 01:09:16,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-07 01:09:16,856 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-07 01:09:16,856 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-07 01:09:16,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-07 01:09:16,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-07 01:09:16,856 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-07 01:09:16,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-07 01:09:16,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-07 01:09:16,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-07 01:09:16,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-07 01:09:16,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-07 01:09:16,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-07 01:09:16,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-07 01:09:16,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 01:09:16,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 01:09:17,020 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 01:09:17,022 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 01:09:17,733 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 01:09:17,742 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 01:09:17,742 INFO L301 CfgBuilder]: Removed 69 assume(true) statements. [2021-12-07 01:09:17,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:09:17 BoogieIcfgContainer [2021-12-07 01:09:17,744 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 01:09:17,746 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-07 01:09:17,746 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-07 01:09:17,748 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-07 01:09:17,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 01:09:16" (1/3) ... [2021-12-07 01:09:17,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c22aadf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:09:17, skipping insertion in model container [2021-12-07 01:09:17,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:09:16" (2/3) ... [2021-12-07 01:09:17,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c22aadf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:09:17, skipping insertion in model container [2021-12-07 01:09:17,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:09:17" (3/3) ... [2021-12-07 01:09:17,751 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test4-2.i [2021-12-07 01:09:17,755 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-07 01:09:17,755 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-07 01:09:17,798 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-07 01:09:17,804 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 [2021-12-07 01:09:17,804 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-07 01:09:17,829 INFO L276 IsEmpty]: Start isEmpty. Operand has 240 states, 220 states have (on average 1.6818181818181819) internal successors, (370), 231 states have internal predecessors, (370), 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) [2021-12-07 01:09:17,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-07 01:09:17,833 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:09:17,834 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:09:17,834 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:09:17,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:09:17,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1526554564, now seen corresponding path program 1 times [2021-12-07 01:09:17,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:09:17,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142362553] [2021-12-07 01:09:17,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:09:17,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:09:17,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:09:17,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:09:17,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:09:17,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142362553] [2021-12-07 01:09:17,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142362553] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:09:17,995 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:09:17,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:09:17,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824203247] [2021-12-07 01:09:17,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:09:18,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:09:18,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:09:18,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:09:18,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:09:18,029 INFO L87 Difference]: Start difference. First operand has 240 states, 220 states have (on average 1.6818181818181819) internal successors, (370), 231 states have internal predecessors, (370), 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) [2021-12-07 01:09:18,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:09:18,104 INFO L93 Difference]: Finished difference Result 648 states and 1103 transitions. [2021-12-07 01:09:18,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:09:18,106 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 [2021-12-07 01:09:18,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:09:18,119 INFO L225 Difference]: With dead ends: 648 [2021-12-07 01:09:18,119 INFO L226 Difference]: Without dead ends: 377 [2021-12-07 01:09:18,122 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 [2021-12-07 01:09:18,125 INFO L933 BasicCegarLoop]: 331 mSDtfsCounter, 211 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 652 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 [2021-12-07 01:09:18,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [217 Valid, 652 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:09:18,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2021-12-07 01:09:18,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 208. [2021-12-07 01:09:18,167 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) [2021-12-07 01:09:18,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 282 transitions. [2021-12-07 01:09:18,170 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 282 transitions. Word has length 10 [2021-12-07 01:09:18,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:09:18,170 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 282 transitions. [2021-12-07 01:09:18,170 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) [2021-12-07 01:09:18,171 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 282 transitions. [2021-12-07 01:09:18,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-07 01:09:18,177 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:09:18,177 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] [2021-12-07 01:09:18,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-07 01:09:18,177 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:09:18,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:09:18,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1951190789, now seen corresponding path program 1 times [2021-12-07 01:09:18,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:09:18,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123861176] [2021-12-07 01:09:18,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:09:18,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:09:18,355 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:09:18,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1807085860] [2021-12-07 01:09:18,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:09:18,356 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:09:18,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0287a874-7865-41e2-84a9-2d672680e947/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:09:18,357 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0287a874-7865-41e2-84a9-2d672680e947/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:09:18,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0287a874-7865-41e2-84a9-2d672680e947/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-07 01:09:18,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:09:18,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 2973 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-07 01:09:19,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:09:19,130 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:09:19,130 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:09:19,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:09:19,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123861176] [2021-12-07 01:09:19,130 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:09:19,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807085860] [2021-12-07 01:09:19,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807085860] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:09:19,131 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:09:19,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:09:19,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881506688] [2021-12-07 01:09:19,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:09:19,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:09:19,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:09:19,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:09:19,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:09:19,133 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) [2021-12-07 01:09:19,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:09:19,192 INFO L93 Difference]: Finished difference Result 434 states and 592 transitions. [2021-12-07 01:09:19,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:09:19,193 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 [2021-12-07 01:09:19,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:09:19,195 INFO L225 Difference]: With dead ends: 434 [2021-12-07 01:09:19,195 INFO L226 Difference]: Without dead ends: 229 [2021-12-07 01:09:19,197 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 [2021-12-07 01:09:19,198 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 [2021-12-07 01:09:19,199 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] [2021-12-07 01:09:19,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-12-07 01:09:19,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 228. [2021-12-07 01:09:19,215 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) [2021-12-07 01:09:19,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 302 transitions. [2021-12-07 01:09:19,217 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 302 transitions. Word has length 108 [2021-12-07 01:09:19,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:09:19,218 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 302 transitions. [2021-12-07 01:09:19,218 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) [2021-12-07 01:09:19,218 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 302 transitions. [2021-12-07 01:09:19,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-07 01:09:19,221 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:09:19,221 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] [2021-12-07 01:09:19,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0287a874-7865-41e2-84a9-2d672680e947/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-07 01:09:19,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0287a874-7865-41e2-84a9-2d672680e947/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:09:19,422 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:09:19,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:09:19,423 INFO L85 PathProgramCache]: Analyzing trace with hash -724801593, now seen corresponding path program 1 times [2021-12-07 01:09:19,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:09:19,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336450039] [2021-12-07 01:09:19,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:09:19,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:09:19,548 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:09:19,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [662905722] [2021-12-07 01:09:19,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:09:19,549 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:09:19,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0287a874-7865-41e2-84a9-2d672680e947/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:09:19,550 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0287a874-7865-41e2-84a9-2d672680e947/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:09:19,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0287a874-7865-41e2-84a9-2d672680e947/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-07 01:09:20,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:09:20,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 2975 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-07 01:09:20,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:09:20,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:09:20,316 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:09:20,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:09:20,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336450039] [2021-12-07 01:09:20,316 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:09:20,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662905722] [2021-12-07 01:09:20,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [662905722] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:09:20,317 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:09:20,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:09:20,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033975457] [2021-12-07 01:09:20,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:09:20,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:09:20,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:09:20,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:09:20,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:09:20,319 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) [2021-12-07 01:09:20,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:09:20,359 INFO L93 Difference]: Finished difference Result 474 states and 632 transitions. [2021-12-07 01:09:20,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:09:20,359 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 [2021-12-07 01:09:20,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:09:20,361 INFO L225 Difference]: With dead ends: 474 [2021-12-07 01:09:20,361 INFO L226 Difference]: Without dead ends: 249 [2021-12-07 01:09:20,362 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 [2021-12-07 01:09:20,363 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 [2021-12-07 01:09:20,364 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] [2021-12-07 01:09:20,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2021-12-07 01:09:20,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 248. [2021-12-07 01:09:20,377 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) [2021-12-07 01:09:20,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 322 transitions. [2021-12-07 01:09:20,380 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 322 transitions. Word has length 108 [2021-12-07 01:09:20,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:09:20,380 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 322 transitions. [2021-12-07 01:09:20,381 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) [2021-12-07 01:09:20,381 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 322 transitions. [2021-12-07 01:09:20,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-07 01:09:20,383 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:09:20,383 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] [2021-12-07 01:09:20,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0287a874-7865-41e2-84a9-2d672680e947/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-07 01:09:20,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0287a874-7865-41e2-84a9-2d672680e947/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:09:20,585 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:09:20,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:09:20,587 INFO L85 PathProgramCache]: Analyzing trace with hash -652415035, now seen corresponding path program 1 times [2021-12-07 01:09:20,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:09:20,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864385317] [2021-12-07 01:09:20,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:09:20,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:09:20,722 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:09:20,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1532806936] [2021-12-07 01:09:20,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:09:20,723 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:09:20,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0287a874-7865-41e2-84a9-2d672680e947/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:09:20,724 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0287a874-7865-41e2-84a9-2d672680e947/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:09:20,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0287a874-7865-41e2-84a9-2d672680e947/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-07 01:09:21,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:09:21,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 2977 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-07 01:09:21,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:09:21,480 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:09:21,480 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:09:21,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:09:21,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864385317] [2021-12-07 01:09:21,480 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:09:21,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532806936] [2021-12-07 01:09:21,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1532806936] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:09:21,481 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:09:21,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 01:09:21,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987538972] [2021-12-07 01:09:21,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:09:21,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 01:09:21,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:09:21,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 01:09:21,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 01:09:21,482 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) [2021-12-07 01:09:21,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:09:21,528 INFO L93 Difference]: Finished difference Result 485 states and 633 transitions. [2021-12-07 01:09:21,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 01:09:21,528 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 [2021-12-07 01:09:21,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:09:21,530 INFO L225 Difference]: With dead ends: 485 [2021-12-07 01:09:21,530 INFO L226 Difference]: Without dead ends: 240 [2021-12-07 01:09:21,530 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 [2021-12-07 01:09:21,531 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 [2021-12-07 01:09:21,531 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] [2021-12-07 01:09:21,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-12-07 01:09:21,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 234. [2021-12-07 01:09:21,539 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) [2021-12-07 01:09:21,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 301 transitions. [2021-12-07 01:09:21,540 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 301 transitions. Word has length 108 [2021-12-07 01:09:21,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:09:21,541 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 301 transitions. [2021-12-07 01:09:21,541 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) [2021-12-07 01:09:21,541 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 301 transitions. [2021-12-07 01:09:21,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-07 01:09:21,542 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:09:21,542 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] [2021-12-07 01:09:21,578 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0287a874-7865-41e2-84a9-2d672680e947/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-07 01:09:21,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0287a874-7865-41e2-84a9-2d672680e947/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-12-07 01:09:21,744 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:09:21,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:09:21,745 INFO L85 PathProgramCache]: Analyzing trace with hash -2044262665, now seen corresponding path program 1 times [2021-12-07 01:09:21,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:09:21,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034285746] [2021-12-07 01:09:21,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:09:21,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:09:21,862 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:09:21,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1263258567] [2021-12-07 01:09:21,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:09:21,863 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:09:21,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0287a874-7865-41e2-84a9-2d672680e947/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:09:21,864 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0287a874-7865-41e2-84a9-2d672680e947/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:09:21,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0287a874-7865-41e2-84a9-2d672680e947/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-07 01:09:22,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:09:22,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 2963 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-07 01:09:22,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:09:22,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:09:22,672 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:09:22,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:09:22,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034285746] [2021-12-07 01:09:22,672 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:09:22,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263258567] [2021-12-07 01:09:22,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263258567] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:09:22,672 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:09:22,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:09:22,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061321134] [2021-12-07 01:09:22,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:09:22,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:09:22,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:09:22,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:09:22,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:09:22,673 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) [2021-12-07 01:09:22,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:09:22,759 INFO L93 Difference]: Finished difference Result 546 states and 700 transitions. [2021-12-07 01:09:22,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 01:09:22,759 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 [2021-12-07 01:09:22,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:09:22,761 INFO L225 Difference]: With dead ends: 546 [2021-12-07 01:09:22,762 INFO L226 Difference]: Without dead ends: 315 [2021-12-07 01:09:22,763 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 [2021-12-07 01:09:22,764 INFO L933 BasicCegarLoop]: 356 mSDtfsCounter, 220 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 1028 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 01:09:22,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 1028 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 01:09:22,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2021-12-07 01:09:22,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 220. [2021-12-07 01:09:22,777 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) [2021-12-07 01:09:22,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 280 transitions. [2021-12-07 01:09:22,779 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 280 transitions. Word has length 108 [2021-12-07 01:09:22,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:09:22,779 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 280 transitions. [2021-12-07 01:09:22,780 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) [2021-12-07 01:09:22,780 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 280 transitions. [2021-12-07 01:09:22,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-07 01:09:22,799 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:09:22,799 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] [2021-12-07 01:09:22,830 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0287a874-7865-41e2-84a9-2d672680e947/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-07 01:09:22,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0287a874-7865-41e2-84a9-2d672680e947/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:09:23,001 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:09:23,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:09:23,026 INFO L85 PathProgramCache]: Analyzing trace with hash 456470147, now seen corresponding path program 1 times [2021-12-07 01:09:23,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:09:23,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788175808] [2021-12-07 01:09:23,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:09:23,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:09:23,159 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:09:23,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [962171583] [2021-12-07 01:09:23,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:09:23,159 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:09:23,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0287a874-7865-41e2-84a9-2d672680e947/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:09:23,160 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0287a874-7865-41e2-84a9-2d672680e947/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:09:23,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0287a874-7865-41e2-84a9-2d672680e947/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-07 01:09:23,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:09:23,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 2951 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-07 01:09:23,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:09:24,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:09:24,077 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:09:24,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:09:24,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:09:24,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788175808] [2021-12-07 01:09:24,190 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:09:24,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962171583] [2021-12-07 01:09:24,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962171583] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:09:24,191 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:09:24,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-12-07 01:09:24,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700565172] [2021-12-07 01:09:24,191 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:09:24,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 01:09:24,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:09:24,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 01:09:24,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-07 01:09:24,192 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) [2021-12-07 01:09:24,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:09:24,261 INFO L93 Difference]: Finished difference Result 797 states and 999 transitions. [2021-12-07 01:09:24,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 01:09:24,261 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 [2021-12-07 01:09:24,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:09:24,265 INFO L225 Difference]: With dead ends: 797 [2021-12-07 01:09:24,265 INFO L226 Difference]: Without dead ends: 766 [2021-12-07 01:09:24,265 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 [2021-12-07 01:09:24,266 INFO L933 BasicCegarLoop]: 317 mSDtfsCounter, 1313 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1337 SdHoareTripleChecker+Valid, 1000 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:09:24,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1337 Valid, 1000 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:09:24,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2021-12-07 01:09:24,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 766. [2021-12-07 01:09:24,286 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) [2021-12-07 01:09:24,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 946 transitions. [2021-12-07 01:09:24,289 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 946 transitions. Word has length 108 [2021-12-07 01:09:24,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:09:24,289 INFO L470 AbstractCegarLoop]: Abstraction has 766 states and 946 transitions. [2021-12-07 01:09:24,290 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) [2021-12-07 01:09:24,290 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 946 transitions. [2021-12-07 01:09:24,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2021-12-07 01:09:24,295 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:09:24,295 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] [2021-12-07 01:09:24,336 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0287a874-7865-41e2-84a9-2d672680e947/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-07 01:09:24,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0287a874-7865-41e2-84a9-2d672680e947/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:09:24,496 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:09:24,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:09:24,497 INFO L85 PathProgramCache]: Analyzing trace with hash -2044829992, now seen corresponding path program 2 times [2021-12-07 01:09:24,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:09:24,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189246711] [2021-12-07 01:09:24,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:09:24,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:09:24,977 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:09:24,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [35109834] [2021-12-07 01:09:24,977 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 01:09:24,977 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:09:24,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0287a874-7865-41e2-84a9-2d672680e947/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:09:24,978 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0287a874-7865-41e2-84a9-2d672680e947/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:09:24,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0287a874-7865-41e2-84a9-2d672680e947/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-07 01:09:25,995 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-07 01:09:25,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:09:26,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-07 01:09:26,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:09:26,990 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 592 trivial. 0 not checked. [2021-12-07 01:09:26,990 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:09:26,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:09:26,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189246711] [2021-12-07 01:09:26,991 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:09:26,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35109834] [2021-12-07 01:09:26,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35109834] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:09:26,991 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:09:26,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 01:09:26,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135945111] [2021-12-07 01:09:26,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:09:26,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 01:09:26,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:09:26,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 01:09:26,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 01:09:26,992 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) [2021-12-07 01:09:27,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:09:27,397 INFO L93 Difference]: Finished difference Result 1385 states and 1717 transitions. [2021-12-07 01:09:27,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:09:27,398 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 [2021-12-07 01:09:27,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:09:27,402 INFO L225 Difference]: With dead ends: 1385 [2021-12-07 01:09:27,402 INFO L226 Difference]: Without dead ends: 764 [2021-12-07 01:09:27,404 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 [2021-12-07 01:09:27,405 INFO L933 BasicCegarLoop]: 269 mSDtfsCounter, 65 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.4s IncrementalHoareTripleChecker+Time [2021-12-07 01:09:27,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 731 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-07 01:09:27,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2021-12-07 01:09:27,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 764. [2021-12-07 01:09:27,430 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) [2021-12-07 01:09:27,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 943 transitions. [2021-12-07 01:09:27,435 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 943 transitions. Word has length 402 [2021-12-07 01:09:27,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:09:27,435 INFO L470 AbstractCegarLoop]: Abstraction has 764 states and 943 transitions. [2021-12-07 01:09:27,435 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) [2021-12-07 01:09:27,435 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 943 transitions. [2021-12-07 01:09:27,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2021-12-07 01:09:27,445 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:09:27,445 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] [2021-12-07 01:09:27,470 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0287a874-7865-41e2-84a9-2d672680e947/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-07 01:09:27,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0287a874-7865-41e2-84a9-2d672680e947/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-12-07 01:09:27,646 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:09:27,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:09:27,647 INFO L85 PathProgramCache]: Analyzing trace with hash 2065716649, now seen corresponding path program 1 times [2021-12-07 01:09:27,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:09:27,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041358130] [2021-12-07 01:09:27,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:09:27,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:09:27,938 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:09:27,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2024567202] [2021-12-07 01:09:27,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:09:27,939 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:09:27,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0287a874-7865-41e2-84a9-2d672680e947/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:09:27,940 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0287a874-7865-41e2-84a9-2d672680e947/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:09:27,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0287a874-7865-41e2-84a9-2d672680e947/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-07 01:09:30,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:09:30,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 10743 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-07 01:09:30,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:09:30,730 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 0 proven. 586 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-07 01:09:30,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:09:31,157 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 0 proven. 586 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-07 01:09:31,157 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:09:31,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041358130] [2021-12-07 01:09:31,158 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:09:31,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024567202] [2021-12-07 01:09:31,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2024567202] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:09:31,158 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 01:09:31,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-12-07 01:09:31,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081964995] [2021-12-07 01:09:31,158 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 01:09:31,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-07 01:09:31,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:09:31,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-07 01:09:31,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-12-07 01:09:31,160 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) [2021-12-07 01:09:31,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:09:31,361 INFO L93 Difference]: Finished difference Result 1887 states and 2331 transitions. [2021-12-07 01:09:31,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-07 01:09:31,362 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 [2021-12-07 01:09:31,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:09:31,374 INFO L225 Difference]: With dead ends: 1887 [2021-12-07 01:09:31,374 INFO L226 Difference]: Without dead ends: 1856 [2021-12-07 01:09:31,375 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 [2021-12-07 01:09:31,376 INFO L933 BasicCegarLoop]: 376 mSDtfsCounter, 2743 mSDsluCounter, 2019 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2799 SdHoareTripleChecker+Valid, 2395 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 01:09:31,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2799 Valid, 2395 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 01:09:31,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1856 states. [2021-12-07 01:09:31,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1856 to 1856. [2021-12-07 01:09:31,431 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) [2021-12-07 01:09:31,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1856 states to 1856 states and 2275 transitions. [2021-12-07 01:09:31,440 INFO L78 Accepts]: Start accepts. Automaton has 1856 states and 2275 transitions. Word has length 417 [2021-12-07 01:09:31,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:09:31,441 INFO L470 AbstractCegarLoop]: Abstraction has 1856 states and 2275 transitions. [2021-12-07 01:09:31,442 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) [2021-12-07 01:09:31,442 INFO L276 IsEmpty]: Start isEmpty. Operand 1856 states and 2275 transitions. [2021-12-07 01:09:31,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1006 [2021-12-07 01:09:31,456 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:09:31,457 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] [2021-12-07 01:09:31,512 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0287a874-7865-41e2-84a9-2d672680e947/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-07 01:09:31,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0287a874-7865-41e2-84a9-2d672680e947/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:09:31,658 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:09:31,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:09:31,658 INFO L85 PathProgramCache]: Analyzing trace with hash -613485165, now seen corresponding path program 2 times [2021-12-07 01:09:31,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:09:31,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966435087] [2021-12-07 01:09:31,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:09:31,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:09:32,429 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:09:32,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [36320882] [2021-12-07 01:09:32,429 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 01:09:32,429 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:09:32,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0287a874-7865-41e2-84a9-2d672680e947/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:09:32,430 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0287a874-7865-41e2-84a9-2d672680e947/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:09:32,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0287a874-7865-41e2-84a9-2d672680e947/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-07 01:09:38,016 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-07 01:09:38,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 01:09:38,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 28053 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-07 01:09:38,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:09:38,909 INFO L134 CoverageAnalysis]: Checked inductivity of 4406 backedges. 325 proven. 0 refuted. 0 times theorem prover too weak. 4081 trivial. 0 not checked. [2021-12-07 01:09:38,909 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:09:38,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:09:38,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966435087] [2021-12-07 01:09:38,909 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:09:38,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36320882] [2021-12-07 01:09:38,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36320882] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:09:38,910 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:09:38,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:09:38,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449488997] [2021-12-07 01:09:38,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:09:38,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:09:38,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:09:38,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:09:38,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:09:38,912 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) [2021-12-07 01:09:38,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:09:38,971 INFO L93 Difference]: Finished difference Result 3654 states and 4484 transitions. [2021-12-07 01:09:38,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:09:38,973 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 [2021-12-07 01:09:38,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:09:38,981 INFO L225 Difference]: With dead ends: 3654 [2021-12-07 01:09:38,981 INFO L226 Difference]: Without dead ends: 1854 [2021-12-07 01:09:38,983 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 [2021-12-07 01:09:38,984 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 [2021-12-07 01:09:38,984 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] [2021-12-07 01:09:38,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1854 states. [2021-12-07 01:09:39,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1854 to 1854. [2021-12-07 01:09:39,023 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) [2021-12-07 01:09:39,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1854 states to 1854 states and 2272 transitions. [2021-12-07 01:09:39,028 INFO L78 Accepts]: Start accepts. Automaton has 1854 states and 2272 transitions. Word has length 1005 [2021-12-07 01:09:39,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:09:39,029 INFO L470 AbstractCegarLoop]: Abstraction has 1854 states and 2272 transitions. [2021-12-07 01:09:39,029 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) [2021-12-07 01:09:39,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1854 states and 2272 transitions. [2021-12-07 01:09:39,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1021 [2021-12-07 01:09:39,047 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:09:39,047 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] [2021-12-07 01:09:39,129 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0287a874-7865-41e2-84a9-2d672680e947/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-07 01:09:39,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0287a874-7865-41e2-84a9-2d672680e947/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:09:39,248 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:09:39,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:09:39,248 INFO L85 PathProgramCache]: Analyzing trace with hash -213100270, now seen corresponding path program 1 times [2021-12-07 01:09:39,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:09:39,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862019108] [2021-12-07 01:09:39,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:09:39,249 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:09:40,025 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:09:40,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [970429648] [2021-12-07 01:09:40,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:09:40,026 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:09:40,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0287a874-7865-41e2-84a9-2d672680e947/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:09:40,026 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0287a874-7865-41e2-84a9-2d672680e947/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:09:40,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0287a874-7865-41e2-84a9-2d672680e947/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process