./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1513aa40-79ea-46cf-8865-71c442ebf895/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1513aa40-79ea-46cf-8865-71c442ebf895/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1513aa40-79ea-46cf-8865-71c442ebf895/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1513aa40-79ea-46cf-8865-71c442ebf895/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1513aa40-79ea-46cf-8865-71c442ebf895/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1513aa40-79ea-46cf-8865-71c442ebf895/bin/uautomizer-Dbtcem3rbc --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 80f1df6d4bc7961b41bec7d16d328ef23e1639399b1fb3a18bcdda9891a98148 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:47:06,586 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:47:06,592 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:47:06,641 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:47:06,642 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:47:06,646 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:47:06,648 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:47:06,651 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:47:06,656 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:47:06,662 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:47:06,663 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:47:06,665 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:47:06,666 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:47:06,668 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:47:06,670 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:47:06,672 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:47:06,674 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:47:06,675 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:47:06,676 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:47:06,685 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:47:06,687 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:47:06,689 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:47:06,693 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:47:06,695 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:47:06,701 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:47:06,704 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:47:06,705 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:47:06,706 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:47:06,707 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:47:06,708 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:47:06,709 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:47:06,710 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:47:06,712 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:47:06,714 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:47:06,717 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:47:06,717 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:47:06,718 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:47:06,719 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:47:06,719 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:47:06,720 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:47:06,721 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:47:06,723 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1513aa40-79ea-46cf-8865-71c442ebf895/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:47:06,766 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:47:06,766 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:47:06,767 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:47:06,767 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:47:06,768 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:47:06,768 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:47:06,769 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:47:06,769 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:47:06,769 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:47:06,770 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:47:06,771 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:47:06,771 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:47:06,772 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:47:06,772 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:47:06,772 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:47:06,772 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:47:06,773 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:47:06,773 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:47:06,773 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:47:06,773 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:47:06,773 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:47:06,774 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:47:06,774 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:47:06,774 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:47:06,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:47:06,775 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:47:06,777 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:47:06,777 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:47:06,777 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:47:06,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:47:06,790 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:47:06,790 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:47:06,790 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:47:06,791 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_1513aa40-79ea-46cf-8865-71c442ebf895/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1513aa40-79ea-46cf-8865-71c442ebf895/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 80f1df6d4bc7961b41bec7d16d328ef23e1639399b1fb3a18bcdda9891a98148 [2022-11-02 20:47:07,075 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:47:07,103 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:47:07,106 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:47:07,107 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:47:07,108 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:47:07,109 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1513aa40-79ea-46cf-8865-71c442ebf895/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-2.i [2022-11-02 20:47:07,179 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1513aa40-79ea-46cf-8865-71c442ebf895/bin/uautomizer-Dbtcem3rbc/data/5ca3ff363/671ba0c80e05438ab1d83075409d4b2c/FLAGee8a3d27e [2022-11-02 20:47:07,829 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:47:07,835 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1513aa40-79ea-46cf-8865-71c442ebf895/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-2.i [2022-11-02 20:47:07,852 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1513aa40-79ea-46cf-8865-71c442ebf895/bin/uautomizer-Dbtcem3rbc/data/5ca3ff363/671ba0c80e05438ab1d83075409d4b2c/FLAGee8a3d27e [2022-11-02 20:47:08,030 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1513aa40-79ea-46cf-8865-71c442ebf895/bin/uautomizer-Dbtcem3rbc/data/5ca3ff363/671ba0c80e05438ab1d83075409d4b2c [2022-11-02 20:47:08,033 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:47:08,035 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:47:08,036 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:47:08,036 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:47:08,041 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:47:08,042 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:47:08" (1/1) ... [2022-11-02 20:47:08,043 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f28d85c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:08, skipping insertion in model container [2022-11-02 20:47:08,043 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:47:08" (1/1) ... [2022-11-02 20:47:08,051 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:47:08,104 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:47:08,603 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_1513aa40-79ea-46cf-8865-71c442ebf895/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-2.i[33021,33034] [2022-11-02 20:47:08,769 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_1513aa40-79ea-46cf-8865-71c442ebf895/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-2.i[45234,45247] [2022-11-02 20:47:08,786 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:47:08,799 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:47:08,859 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_1513aa40-79ea-46cf-8865-71c442ebf895/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-2.i[33021,33034] [2022-11-02 20:47:08,917 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_1513aa40-79ea-46cf-8865-71c442ebf895/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-2.i[45234,45247] [2022-11-02 20:47:08,925 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:47:08,957 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:47:08,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:08 WrapperNode [2022-11-02 20:47:08,958 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:47:08,959 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:47:08,959 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:47:08,959 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:47:08,970 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:08" (1/1) ... [2022-11-02 20:47:09,007 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:08" (1/1) ... [2022-11-02 20:47:09,118 INFO L138 Inliner]: procedures = 177, calls = 348, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1151 [2022-11-02 20:47:09,118 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:47:09,119 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:47:09,119 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:47:09,120 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:47:09,129 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:08" (1/1) ... [2022-11-02 20:47:09,130 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:08" (1/1) ... [2022-11-02 20:47:09,144 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:08" (1/1) ... [2022-11-02 20:47:09,144 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:08" (1/1) ... [2022-11-02 20:47:09,195 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:08" (1/1) ... [2022-11-02 20:47:09,209 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:08" (1/1) ... [2022-11-02 20:47:09,222 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:08" (1/1) ... [2022-11-02 20:47:09,236 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:08" (1/1) ... [2022-11-02 20:47:09,251 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:47:09,257 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:47:09,257 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:47:09,257 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:47:09,261 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:08" (1/1) ... [2022-11-02 20:47:09,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:47:09,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1513aa40-79ea-46cf-8865-71c442ebf895/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:09,300 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1513aa40-79ea-46cf-8865-71c442ebf895/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:47:09,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1513aa40-79ea-46cf-8865-71c442ebf895/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:47:09,343 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:47:09,343 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-02 20:47:09,343 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-02 20:47:09,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:47:09,344 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-02 20:47:09,344 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-02 20:47:09,344 INFO L130 BoogieDeclarations]: Found specification of procedure test_int [2022-11-02 20:47:09,345 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int [2022-11-02 20:47:09,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 20:47:09,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:47:09,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-02 20:47:09,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:47:09,346 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-02 20:47:09,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-02 20:47:09,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:47:09,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:47:09,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:47:09,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:47:09,687 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:47:09,689 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:47:11,823 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:47:11,831 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:47:11,832 INFO L300 CfgBuilder]: Removed 71 assume(true) statements. [2022-11-02 20:47:11,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:47:11 BoogieIcfgContainer [2022-11-02 20:47:11,834 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:47:11,836 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:47:11,837 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:47:11,848 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:47:11,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:47:08" (1/3) ... [2022-11-02 20:47:11,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5baa5959 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:47:11, skipping insertion in model container [2022-11-02 20:47:11,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:08" (2/3) ... [2022-11-02 20:47:11,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5baa5959 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:47:11, skipping insertion in model container [2022-11-02 20:47:11,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:47:11" (3/3) ... [2022-11-02 20:47:11,852 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test8-2.i [2022-11-02 20:47:11,886 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:47:11,895 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-02 20:47:11,988 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:47:11,995 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4d2d252b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:47:11,995 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-02 20:47:12,000 INFO L276 IsEmpty]: Start isEmpty. Operand has 255 states, 229 states have (on average 1.6943231441048034) internal successors, (388), 246 states have internal predecessors, (388), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-02 20:47:12,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 20:47:12,008 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:47:12,009 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:47:12,009 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:47:12,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:12,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1334755327, now seen corresponding path program 1 times [2022-11-02 20:47:12,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:47:12,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795907861] [2022-11-02 20:47:12,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:12,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:47:12,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:12,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:47:12,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:47:12,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795907861] [2022-11-02 20:47:12,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795907861] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:47:12,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:47:12,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:47:12,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462475745] [2022-11-02 20:47:12,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:47:12,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:47:12,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:47:12,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:47:12,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:47:12,308 INFO L87 Difference]: Start difference. First operand has 255 states, 229 states have (on average 1.6943231441048034) internal successors, (388), 246 states have internal predecessors, (388), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:47:12,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:47:12,363 INFO L93 Difference]: Finished difference Result 508 states and 871 transitions. [2022-11-02 20:47:12,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:47:12,366 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-02 20:47:12,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:47:12,377 INFO L225 Difference]: With dead ends: 508 [2022-11-02 20:47:12,378 INFO L226 Difference]: Without dead ends: 222 [2022-11-02 20:47:12,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:47:12,386 INFO L413 NwaCegarLoop]: 351 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:47:12,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:47:12,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-11-02 20:47:12,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2022-11-02 20:47:12,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 197 states have (on average 1.3553299492385786) internal successors, (267), 213 states have internal predecessors, (267), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-02 20:47:12,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 307 transitions. [2022-11-02 20:47:12,447 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 307 transitions. Word has length 9 [2022-11-02 20:47:12,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:47:12,447 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 307 transitions. [2022-11-02 20:47:12,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:47:12,448 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 307 transitions. [2022-11-02 20:47:12,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-02 20:47:12,451 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:47:12,451 INFO L195 NwaCegarLoop]: 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] [2022-11-02 20:47:12,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:47:12,452 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:47:12,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:12,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1790395171, now seen corresponding path program 1 times [2022-11-02 20:47:12,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:47:12,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274091988] [2022-11-02 20:47:12,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:12,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:47:12,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:12,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:47:12,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:47:12,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274091988] [2022-11-02 20:47:12,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274091988] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:47:12,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:47:12,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:47:12,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126452371] [2022-11-02 20:47:12,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:47:12,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:47:12,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:47:12,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:47:12,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:47:12,979 INFO L87 Difference]: Start difference. First operand 222 states and 307 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:47:13,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:47:13,629 INFO L93 Difference]: Finished difference Result 463 states and 642 transitions. [2022-11-02 20:47:13,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:47:13,633 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2022-11-02 20:47:13,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:47:13,636 INFO L225 Difference]: With dead ends: 463 [2022-11-02 20:47:13,636 INFO L226 Difference]: Without dead ends: 338 [2022-11-02 20:47:13,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:47:13,638 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 143 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 770 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:47:13,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 770 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:47:13,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2022-11-02 20:47:13,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 224. [2022-11-02 20:47:13,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 199 states have (on average 1.3517587939698492) internal successors, (269), 215 states have internal predecessors, (269), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-02 20:47:13,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 309 transitions. [2022-11-02 20:47:13,669 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 309 transitions. Word has length 44 [2022-11-02 20:47:13,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:47:13,670 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 309 transitions. [2022-11-02 20:47:13,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:47:13,670 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 309 transitions. [2022-11-02 20:47:13,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-02 20:47:13,672 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:47:13,672 INFO L195 NwaCegarLoop]: 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] [2022-11-02 20:47:13,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:47:13,673 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:47:13,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:13,674 INFO L85 PathProgramCache]: Analyzing trace with hash -342228401, now seen corresponding path program 1 times [2022-11-02 20:47:13,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:47:13,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370209773] [2022-11-02 20:47:13,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:13,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:47:13,828 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:47:13,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1962136792] [2022-11-02 20:47:13,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:13,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:47:13,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1513aa40-79ea-46cf-8865-71c442ebf895/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:13,831 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1513aa40-79ea-46cf-8865-71c442ebf895/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:47:13,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1513aa40-79ea-46cf-8865-71c442ebf895/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:47:14,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:14,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 1557 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:47:14,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:47:14,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:47:14,640 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:47:14,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:47:14,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370209773] [2022-11-02 20:47:14,641 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:47:14,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962136792] [2022-11-02 20:47:14,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962136792] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:47:14,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:47:14,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:47:14,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643140041] [2022-11-02 20:47:14,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:47:14,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:47:14,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:47:14,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:47:14,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:47:14,644 INFO L87 Difference]: Start difference. First operand 224 states and 309 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:47:14,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:47:14,734 INFO L93 Difference]: Finished difference Result 465 states and 645 transitions. [2022-11-02 20:47:14,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:47:14,735 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-11-02 20:47:14,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:47:14,737 INFO L225 Difference]: With dead ends: 465 [2022-11-02 20:47:14,737 INFO L226 Difference]: Without dead ends: 245 [2022-11-02 20:47:14,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:47:14,740 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 9 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:47:14,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 559 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:47:14,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2022-11-02 20:47:14,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 244. [2022-11-02 20:47:14,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 219 states have (on average 1.3196347031963471) internal successors, (289), 235 states have internal predecessors, (289), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-02 20:47:14,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 329 transitions. [2022-11-02 20:47:14,757 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 329 transitions. Word has length 61 [2022-11-02 20:47:14,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:47:14,758 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 329 transitions. [2022-11-02 20:47:14,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:47:14,758 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 329 transitions. [2022-11-02 20:47:14,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-02 20:47:14,760 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:47:14,760 INFO L195 NwaCegarLoop]: 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] [2022-11-02 20:47:14,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1513aa40-79ea-46cf-8865-71c442ebf895/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:47:14,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1513aa40-79ea-46cf-8865-71c442ebf895/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-02 20:47:14,979 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:47:14,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:14,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1749706579, now seen corresponding path program 1 times [2022-11-02 20:47:14,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:47:14,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250256423] [2022-11-02 20:47:14,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:14,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:47:15,137 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:47:15,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1738995839] [2022-11-02 20:47:15,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:15,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:47:15,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1513aa40-79ea-46cf-8865-71c442ebf895/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:15,139 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1513aa40-79ea-46cf-8865-71c442ebf895/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:47:15,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1513aa40-79ea-46cf-8865-71c442ebf895/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:47:15,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:15,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 1561 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:47:15,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:47:15,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:47:15,958 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:47:15,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:47:15,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250256423] [2022-11-02 20:47:15,958 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:47:15,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738995839] [2022-11-02 20:47:15,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738995839] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:47:15,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:47:15,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:47:15,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317553316] [2022-11-02 20:47:15,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:47:15,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:47:15,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:47:15,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:47:15,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:47:15,962 INFO L87 Difference]: Start difference. First operand 244 states and 329 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:47:16,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:47:16,065 INFO L93 Difference]: Finished difference Result 476 states and 646 transitions. [2022-11-02 20:47:16,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:47:16,066 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-11-02 20:47:16,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:47:16,067 INFO L225 Difference]: With dead ends: 476 [2022-11-02 20:47:16,068 INFO L226 Difference]: Without dead ends: 236 [2022-11-02 20:47:16,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:47:16,070 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 213 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:47:16,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 647 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:47:16,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-11-02 20:47:16,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 230. [2022-11-02 20:47:16,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 205 states have (on average 1.3073170731707318) internal successors, (268), 221 states have internal predecessors, (268), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-02 20:47:16,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 308 transitions. [2022-11-02 20:47:16,087 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 308 transitions. Word has length 61 [2022-11-02 20:47:16,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:47:16,087 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 308 transitions. [2022-11-02 20:47:16,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:47:16,088 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 308 transitions. [2022-11-02 20:47:16,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-02 20:47:16,089 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:47:16,089 INFO L195 NwaCegarLoop]: 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] [2022-11-02 20:47:16,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1513aa40-79ea-46cf-8865-71c442ebf895/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:47:16,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1513aa40-79ea-46cf-8865-71c442ebf895/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:47:16,315 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:47:16,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:16,316 INFO L85 PathProgramCache]: Analyzing trace with hash 933653125, now seen corresponding path program 1 times [2022-11-02 20:47:16,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:47:16,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810588973] [2022-11-02 20:47:16,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:16,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:47:16,446 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:47:16,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [457964998] [2022-11-02 20:47:16,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:16,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:47:16,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1513aa40-79ea-46cf-8865-71c442ebf895/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:16,447 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1513aa40-79ea-46cf-8865-71c442ebf895/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:47:16,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1513aa40-79ea-46cf-8865-71c442ebf895/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:47:17,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:17,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 1547 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:47:17,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:47:17,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:47:17,508 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:47:17,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:47:17,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810588973] [2022-11-02 20:47:17,509 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:47:17,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457964998] [2022-11-02 20:47:17,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [457964998] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:47:17,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:47:17,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:47:17,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340126860] [2022-11-02 20:47:17,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:47:17,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:47:17,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:47:17,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:47:17,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:47:17,512 INFO L87 Difference]: Start difference. First operand 230 states and 308 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:47:17,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:47:17,624 INFO L93 Difference]: Finished difference Result 567 states and 751 transitions. [2022-11-02 20:47:17,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:47:17,625 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-11-02 20:47:17,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:47:17,628 INFO L225 Difference]: With dead ends: 567 [2022-11-02 20:47:17,629 INFO L226 Difference]: Without dead ends: 341 [2022-11-02 20:47:17,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:47:17,634 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 98 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:47:17,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 610 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:47:17,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2022-11-02 20:47:17,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 338. [2022-11-02 20:47:17,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 312 states have (on average 1.2852564102564104) internal successors, (401), 328 states have internal predecessors, (401), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2022-11-02 20:47:17,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 443 transitions. [2022-11-02 20:47:17,654 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 443 transitions. Word has length 61 [2022-11-02 20:47:17,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:47:17,656 INFO L495 AbstractCegarLoop]: Abstraction has 338 states and 443 transitions. [2022-11-02 20:47:17,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:47:17,657 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 443 transitions. [2022-11-02 20:47:17,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-02 20:47:17,665 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:47:17,665 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:47:17,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1513aa40-79ea-46cf-8865-71c442ebf895/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:47:17,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1513aa40-79ea-46cf-8865-71c442ebf895/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:47:17,879 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:47:17,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:17,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1452917895, now seen corresponding path program 1 times [2022-11-02 20:47:17,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:47:17,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006054389] [2022-11-02 20:47:17,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:17,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:47:17,950 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:47:17,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [889256327] [2022-11-02 20:47:17,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:17,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:47:17,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1513aa40-79ea-46cf-8865-71c442ebf895/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:17,959 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1513aa40-79ea-46cf-8865-71c442ebf895/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:47:17,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1513aa40-79ea-46cf-8865-71c442ebf895/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:47:27,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:27,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 684 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 20:47:27,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:47:27,099 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:47:27,100 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:47:27,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:47:27,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006054389] [2022-11-02 20:47:27,101 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:47:27,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889256327] [2022-11-02 20:47:27,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889256327] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:47:27,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:47:27,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:47:27,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843295132] [2022-11-02 20:47:27,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:47:27,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:47:27,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:47:27,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:47:27,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:47:27,104 INFO L87 Difference]: Start difference. First operand 338 states and 443 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:47:27,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:47:27,165 INFO L93 Difference]: Finished difference Result 631 states and 839 transitions. [2022-11-02 20:47:27,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:47:27,166 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 76 [2022-11-02 20:47:27,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:47:27,171 INFO L225 Difference]: With dead ends: 631 [2022-11-02 20:47:27,171 INFO L226 Difference]: Without dead ends: 341 [2022-11-02 20:47:27,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:47:27,174 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 2 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 887 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:47:27,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 887 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:47:27,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2022-11-02 20:47:27,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 341. [2022-11-02 20:47:27,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 314 states have (on average 1.286624203821656) internal successors, (404), 331 states have internal predecessors, (404), 21 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2022-11-02 20:47:27,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 447 transitions. [2022-11-02 20:47:27,198 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 447 transitions. Word has length 76 [2022-11-02 20:47:27,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:47:27,198 INFO L495 AbstractCegarLoop]: Abstraction has 341 states and 447 transitions. [2022-11-02 20:47:27,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:47:27,199 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 447 transitions. [2022-11-02 20:47:27,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-02 20:47:27,202 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:47:27,203 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:47:27,230 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1513aa40-79ea-46cf-8865-71c442ebf895/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:47:27,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1513aa40-79ea-46cf-8865-71c442ebf895/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-02 20:47:27,403 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:47:27,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:27,404 INFO L85 PathProgramCache]: Analyzing trace with hash -975375717, now seen corresponding path program 1 times [2022-11-02 20:47:27,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:47:27,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589311488] [2022-11-02 20:47:27,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:27,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:47:27,473 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:47:27,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [342507521] [2022-11-02 20:47:27,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:27,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:47:27,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1513aa40-79ea-46cf-8865-71c442ebf895/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:27,477 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1513aa40-79ea-46cf-8865-71c442ebf895/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:47:27,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1513aa40-79ea-46cf-8865-71c442ebf895/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 20:47:33,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:33,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 714 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 20:47:33,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:47:33,154 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:47:33,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:47:33,267 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:47:33,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:47:33,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589311488] [2022-11-02 20:47:33,276 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:47:33,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342507521] [2022-11-02 20:47:33,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342507521] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:47:33,276 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:47:33,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-02 20:47:33,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565893273] [2022-11-02 20:47:33,277 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:47:33,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:47:33,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:47:33,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:47:33,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:47:33,280 INFO L87 Difference]: Start difference. First operand 341 states and 447 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-02 20:47:33,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:47:33,478 INFO L93 Difference]: Finished difference Result 645 states and 860 transitions. [2022-11-02 20:47:33,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:47:33,479 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 78 [2022-11-02 20:47:33,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:47:33,481 INFO L225 Difference]: With dead ends: 645 [2022-11-02 20:47:33,482 INFO L226 Difference]: Without dead ends: 352 [2022-11-02 20:47:33,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:47:33,483 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 14 mSDsluCounter, 1177 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 1475 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:47:33,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 1475 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:47:33,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2022-11-02 20:47:33,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 350. [2022-11-02 20:47:33,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 322 states have (on average 1.2981366459627328) internal successors, (418), 339 states have internal predecessors, (418), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2022-11-02 20:47:33,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 461 transitions. [2022-11-02 20:47:33,501 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 461 transitions. Word has length 78 [2022-11-02 20:47:33,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:47:33,502 INFO L495 AbstractCegarLoop]: Abstraction has 350 states and 461 transitions. [2022-11-02 20:47:33,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-02 20:47:33,502 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 461 transitions. [2022-11-02 20:47:33,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-02 20:47:33,503 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:47:33,503 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:47:33,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1513aa40-79ea-46cf-8865-71c442ebf895/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:47:33,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1513aa40-79ea-46cf-8865-71c442ebf895/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:47:33,727 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:47:33,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:33,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1737208967, now seen corresponding path program 2 times [2022-11-02 20:47:33,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:47:33,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444632045] [2022-11-02 20:47:33,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:33,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:47:33,802 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:47:33,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [618753476] [2022-11-02 20:47:33,803 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:47:33,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:47:33,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1513aa40-79ea-46cf-8865-71c442ebf895/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:33,804 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1513aa40-79ea-46cf-8865-71c442ebf895/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:47:33,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1513aa40-79ea-46cf-8865-71c442ebf895/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 20:48:12,282 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:48:12,282 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:48:12,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 774 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-02 20:48:12,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:48:12,497 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 25 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:48:12,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:48:12,699 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-02 20:48:12,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:48:12,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444632045] [2022-11-02 20:48:12,700 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:48:12,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618753476] [2022-11-02 20:48:12,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618753476] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:48:12,700 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:48:12,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6] total 15 [2022-11-02 20:48:12,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741897716] [2022-11-02 20:48:12,701 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:48:12,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-02 20:48:12,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:48:12,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-02 20:48:12,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:48:12,703 INFO L87 Difference]: Start difference. First operand 350 states and 461 transitions. Second operand has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 20:48:13,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:48:13,198 INFO L93 Difference]: Finished difference Result 704 states and 937 transitions. [2022-11-02 20:48:13,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-02 20:48:13,199 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 82 [2022-11-02 20:48:13,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:48:13,201 INFO L225 Difference]: With dead ends: 704 [2022-11-02 20:48:13,202 INFO L226 Difference]: Without dead ends: 359 [2022-11-02 20:48:13,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2022-11-02 20:48:13,204 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 263 mSDsluCounter, 1247 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 1537 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:48:13,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 1537 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:48:13,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2022-11-02 20:48:13,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 350. [2022-11-02 20:48:13,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 322 states have (on average 1.2981366459627328) internal successors, (418), 339 states have internal predecessors, (418), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2022-11-02 20:48:13,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 461 transitions. [2022-11-02 20:48:13,222 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 461 transitions. Word has length 82 [2022-11-02 20:48:13,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:48:13,222 INFO L495 AbstractCegarLoop]: Abstraction has 350 states and 461 transitions. [2022-11-02 20:48:13,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 20:48:13,223 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 461 transitions. [2022-11-02 20:48:13,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-02 20:48:13,224 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:48:13,224 INFO L195 NwaCegarLoop]: trace histogram [12, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:48:13,273 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1513aa40-79ea-46cf-8865-71c442ebf895/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:48:13,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1513aa40-79ea-46cf-8865-71c442ebf895/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:48:13,439 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:48:13,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:13,439 INFO L85 PathProgramCache]: Analyzing trace with hash -184704007, now seen corresponding path program 3 times [2022-11-02 20:48:13,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:48:13,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105696677] [2022-11-02 20:48:13,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:13,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:48:13,567 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:48:13,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2039887058] [2022-11-02 20:48:13,567 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:48:13,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:48:13,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1513aa40-79ea-46cf-8865-71c442ebf895/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:48:13,569 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1513aa40-79ea-46cf-8865-71c442ebf895/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:48:13,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1513aa40-79ea-46cf-8865-71c442ebf895/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process