./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-industry-pattern/array_of_struct_ptr_cond_init.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-industry-pattern/array_of_struct_ptr_cond_init.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d48e7f91c207323ca4789c990d64e958c1524faa33e5de2c1f0c6fd7803f4f2e --- 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-4e7fbc6 [2022-11-23 15:46:46,088 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:46:46,091 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:46:46,128 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:46:46,128 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:46:46,132 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:46:46,134 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:46:46,136 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:46:46,138 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:46:46,144 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:46:46,145 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:46:46,147 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:46:46,148 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:46:46,150 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:46:46,151 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:46:46,153 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:46:46,154 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:46:46,155 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:46:46,157 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:46:46,162 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:46:46,164 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:46:46,166 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:46:46,168 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:46:46,168 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:46:46,178 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:46:46,178 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:46:46,179 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:46:46,180 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:46:46,181 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:46:46,182 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:46:46,182 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:46:46,183 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:46:46,185 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:46:46,186 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:46:46,187 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:46:46,188 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:46:46,188 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:46:46,188 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:46:46,189 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:46:46,190 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:46:46,190 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:46:46,191 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 15:46:46,226 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:46:46,227 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:46:46,227 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:46:46,228 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:46:46,228 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:46:46,229 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:46:46,229 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:46:46,229 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:46:46,229 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:46:46,230 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:46:46,231 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:46:46,231 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:46:46,231 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:46:46,231 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:46:46,232 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:46:46,232 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:46:46,232 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:46:46,232 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:46:46,234 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:46:46,234 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 15:46:46,234 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:46:46,234 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 15:46:46,235 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:46:46,235 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:46:46,235 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:46:46,235 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:46:46,236 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 15:46:46,236 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:46:46,236 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:46:46,236 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:46:46,237 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:46:46,237 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:46:46,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:46:46,238 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:46:46,238 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:46:46,238 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:46:46,238 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:46:46,239 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:46:46,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:46:46,239 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:46:46,239 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:46:46,240 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_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d48e7f91c207323ca4789c990d64e958c1524faa33e5de2c1f0c6fd7803f4f2e [2022-11-23 15:46:46,540 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:46:46,566 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:46:46,569 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:46:46,570 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:46:46,571 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:46:46,572 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/array-industry-pattern/array_of_struct_ptr_cond_init.i [2022-11-23 15:46:49,602 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:46:49,808 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:46:49,808 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/sv-benchmarks/c/array-industry-pattern/array_of_struct_ptr_cond_init.i [2022-11-23 15:46:49,815 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/data/3ca120b57/c34b47b9d2ff4f3ab3370b9ace7d6f5e/FLAGbd8ad770c [2022-11-23 15:46:49,830 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/data/3ca120b57/c34b47b9d2ff4f3ab3370b9ace7d6f5e [2022-11-23 15:46:49,833 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:46:49,834 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:46:49,835 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:46:49,836 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:46:49,839 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:46:49,840 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:46:49" (1/1) ... [2022-11-23 15:46:49,841 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73e9dd1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:46:49, skipping insertion in model container [2022-11-23 15:46:49,841 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:46:49" (1/1) ... [2022-11-23 15:46:49,849 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:46:49,865 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:46:50,018 WARN L237 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_9cc9a9e5-8ef1-4604-8142-f167c7c19972/sv-benchmarks/c/array-industry-pattern/array_of_struct_ptr_cond_init.i[999,1012] [2022-11-23 15:46:50,037 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:46:50,048 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:46:50,062 WARN L237 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_9cc9a9e5-8ef1-4604-8142-f167c7c19972/sv-benchmarks/c/array-industry-pattern/array_of_struct_ptr_cond_init.i[999,1012] [2022-11-23 15:46:50,069 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:46:50,084 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:46:50,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:46:50 WrapperNode [2022-11-23 15:46:50,085 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:46:50,086 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:46:50,086 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:46:50,086 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:46:50,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:46:50" (1/1) ... [2022-11-23 15:46:50,100 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:46:50" (1/1) ... [2022-11-23 15:46:50,118 INFO L138 Inliner]: procedures = 20, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 67 [2022-11-23 15:46:50,118 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:46:50,119 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:46:50,120 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:46:50,120 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:46:50,128 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:46:50" (1/1) ... [2022-11-23 15:46:50,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:46:50" (1/1) ... [2022-11-23 15:46:50,131 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:46:50" (1/1) ... [2022-11-23 15:46:50,132 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:46:50" (1/1) ... [2022-11-23 15:46:50,137 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:46:50" (1/1) ... [2022-11-23 15:46:50,141 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:46:50" (1/1) ... [2022-11-23 15:46:50,143 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:46:50" (1/1) ... [2022-11-23 15:46:50,144 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:46:50" (1/1) ... [2022-11-23 15:46:50,146 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:46:50,147 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:46:50,148 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:46:50,148 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:46:50,152 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:46:50" (1/1) ... [2022-11-23 15:46:50,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:46:50,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:46:50,184 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:46:50,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:46:50,224 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 15:46:50,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:46:50,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:46:50,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 15:46:50,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 15:46:50,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 15:46:50,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:46:50,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:46:50,225 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 15:46:50,303 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:46:50,305 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:46:50,491 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:46:50,610 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:46:50,611 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-23 15:46:50,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:46:50 BoogieIcfgContainer [2022-11-23 15:46:50,614 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:46:50,617 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:46:50,617 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:46:50,630 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:46:50,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:46:49" (1/3) ... [2022-11-23 15:46:50,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6376f6f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:46:50, skipping insertion in model container [2022-11-23 15:46:50,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:46:50" (2/3) ... [2022-11-23 15:46:50,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6376f6f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:46:50, skipping insertion in model container [2022-11-23 15:46:50,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:46:50" (3/3) ... [2022-11-23 15:46:50,633 INFO L112 eAbstractionObserver]: Analyzing ICFG array_of_struct_ptr_cond_init.i [2022-11-23 15:46:50,656 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:46:50,656 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 15:46:50,709 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:46:50,715 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=FINITE_AUTOMATA, 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;@7dbc419f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:46:50,716 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 15:46:50,720 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.625) internal successors, (13), 9 states have internal predecessors, (13), 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) [2022-11-23 15:46:50,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-23 15:46:50,726 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:46:50,727 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-23 15:46:50,727 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:46:50,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:46:50,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1600961111, now seen corresponding path program 1 times [2022-11-23 15:46:50,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:46:50,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371630077] [2022-11-23 15:46:50,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:46:50,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:46:50,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:46:51,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:46:51,012 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:46:51,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371630077] [2022-11-23 15:46:51,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371630077] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:46:51,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:46:51,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 15:46:51,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400087490] [2022-11-23 15:46:51,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:46:51,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:46:51,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:46:51,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:46:51,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:46:51,065 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.625) internal successors, (13), 9 states have internal predecessors, (13), 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) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2022-11-23 15:46:51,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:46:51,121 INFO L93 Difference]: Finished difference Result 26 states and 35 transitions. [2022-11-23 15:46:51,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:46:51,123 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2022-11-23 15:46:51,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:46:51,131 INFO L225 Difference]: With dead ends: 26 [2022-11-23 15:46:51,131 INFO L226 Difference]: Without dead ends: 17 [2022-11-23 15:46:51,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:46:51,137 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 7 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:46:51,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 12 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:46:51,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-23 15:46:51,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 10. [2022-11-23 15:46:51,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 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) [2022-11-23 15:46:51,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2022-11-23 15:46:51,169 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 6 [2022-11-23 15:46:51,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:46:51,170 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2022-11-23 15:46:51,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2022-11-23 15:46:51,171 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2022-11-23 15:46:51,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-23 15:46:51,171 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:46:51,171 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:46:51,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:46:51,172 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:46:51,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:46:51,173 INFO L85 PathProgramCache]: Analyzing trace with hash 2081495740, now seen corresponding path program 1 times [2022-11-23 15:46:51,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:46:51,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354465199] [2022-11-23 15:46:51,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:46:51,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:46:51,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:46:51,366 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:46:51,367 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:46:51,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354465199] [2022-11-23 15:46:51,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354465199] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:46:51,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769671837] [2022-11-23 15:46:51,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:46:51,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:46:51,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:46:51,371 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:46:51,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 15:46:51,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:46:51,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 15:46:51,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:46:51,524 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:46:51,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:46:51,545 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:46:51,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769671837] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:46:51,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [361547767] [2022-11-23 15:46:51,565 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-11-23 15:46:51,566 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:46:51,569 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:46:51,575 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:46:51,575 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:46:51,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-11-23 15:46:51,651 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-11-23 15:46:51,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:46:51,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:46:51,794 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 160 treesize of output 152 [2022-11-23 15:46:51,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:46:51,895 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 128 treesize of output 144 [2022-11-23 15:46:51,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:46:51,980 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 112 treesize of output 102 [2022-11-23 15:46:52,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:46:52,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:46:52,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:46:52,095 INFO L321 Elim1Store]: treesize reduction 68, result has 11.7 percent of original size [2022-11-23 15:46:52,096 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 95 treesize of output 127 [2022-11-23 15:46:52,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:46:52,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:46:52,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:46:52,282 INFO L321 Elim1Store]: treesize reduction 132, result has 14.8 percent of original size [2022-11-23 15:46:52,282 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 12 case distinctions, treesize of input 97 treesize of output 146 [2022-11-23 15:46:52,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:46:52,375 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 76 [2022-11-23 15:46:52,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:46:52,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 17 [2022-11-23 15:46:52,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:46:52,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:46:52,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:46:52,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:46:52,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:46:52,808 INFO L321 Elim1Store]: treesize reduction 48, result has 18.6 percent of original size [2022-11-23 15:46:52,809 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 42 treesize of output 28 [2022-11-23 15:46:52,859 INFO L321 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2022-11-23 15:46:52,860 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 7 [2022-11-23 15:46:52,971 INFO L321 Elim1Store]: treesize reduction 47, result has 9.6 percent of original size [2022-11-23 15:46:52,972 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 424 treesize of output 424 [2022-11-23 15:46:53,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:46:53,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:46:53,072 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 15:46:53,073 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 544 treesize of output 524 [2022-11-23 15:46:53,132 INFO L321 Elim1Store]: treesize reduction 26, result has 16.1 percent of original size [2022-11-23 15:46:53,133 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 542 treesize of output 535 [2022-11-23 15:46:53,287 INFO L321 Elim1Store]: treesize reduction 41, result has 24.1 percent of original size [2022-11-23 15:46:53,288 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 656 treesize of output 596 [2022-11-23 15:46:53,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:46:53,394 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 141 [2022-11-23 15:46:53,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:46:53,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:46:53,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 11 [2022-11-23 15:46:53,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:46:53,630 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 132 [2022-11-23 15:46:53,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:46:53,660 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 136 [2022-11-23 15:46:53,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:46:53,689 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 116 [2022-11-23 15:46:53,760 INFO L321 Elim1Store]: treesize reduction 40, result has 46.7 percent of original size [2022-11-23 15:46:53,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 110 treesize of output 158 [2022-11-23 15:46:53,807 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-23 15:46:53,807 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 126 [2022-11-23 15:46:54,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:46:54,065 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 13 [2022-11-23 15:46:54,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:46:54,088 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 13 [2022-11-23 15:46:54,134 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 7 [2022-11-23 15:46:54,155 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 7 [2022-11-23 15:46:54,227 INFO L321 Elim1Store]: treesize reduction 34, result has 40.4 percent of original size [2022-11-23 15:46:54,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 532 treesize of output 506 [2022-11-23 15:46:54,333 INFO L321 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2022-11-23 15:46:54,334 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 570 treesize of output 533 [2022-11-23 15:46:54,622 INFO L321 Elim1Store]: treesize reduction 90, result has 37.5 percent of original size [2022-11-23 15:46:54,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 5 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 645 treesize of output 830 [2022-11-23 15:46:54,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 27 [2022-11-23 15:46:55,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:46:55,107 INFO L321 Elim1Store]: treesize reduction 38, result has 49.3 percent of original size [2022-11-23 15:46:55,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 3257 treesize of output 3286 [2022-11-23 15:46:55,721 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2022-11-23 15:46:55,787 INFO L321 Elim1Store]: treesize reduction 17, result has 37.0 percent of original size [2022-11-23 15:46:55,788 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 23 [2022-11-23 15:46:55,927 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2022-11-23 15:46:55,987 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2022-11-23 15:46:56,048 INFO L321 Elim1Store]: treesize reduction 17, result has 37.0 percent of original size [2022-11-23 15:46:56,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 23 [2022-11-23 15:46:56,125 INFO L321 Elim1Store]: treesize reduction 17, result has 37.0 percent of original size [2022-11-23 15:46:56,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 23 [2022-11-23 15:46:56,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 15:46:56,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-23 15:46:56,716 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: no need to replace index at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.constructReplacementForSelectCase(DerPreprocessor.java:333) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.constructDerEnabler(DerPreprocessor.java:187) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.(DerPreprocessor.java:144) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:353) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:190) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne3(DualJunctionSaa.java:172) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne2(DualJunctionSaa.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne1(DualJunctionSaa.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne0(DualJunctionSaa.java:122) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:108) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryExhaustivelyToEliminate(DualJunctionSaa.java:93) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:627) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:606) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:528) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:332) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:345) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:281) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:285) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:119) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpretForSingleMarker(DagInterpreter.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarizeInternal(FixpointLoopSummarizer.java:125) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:98) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:177) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:168) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-23 15:46:56,721 INFO L158 Benchmark]: Toolchain (without parser) took 6886.97ms. Allocated memory was 151.0MB in the beginning and 268.4MB in the end (delta: 117.4MB). Free memory was 107.0MB in the beginning and 149.5MB in the end (delta: -42.6MB). Peak memory consumption was 147.8MB. Max. memory is 16.1GB. [2022-11-23 15:46:56,721 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 151.0MB. Free memory is still 91.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:46:56,721 INFO L158 Benchmark]: CACSL2BoogieTranslator took 249.59ms. Allocated memory is still 151.0MB. Free memory was 107.0MB in the beginning and 96.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-23 15:46:56,722 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.04ms. Allocated memory is still 151.0MB. Free memory was 96.5MB in the beginning and 94.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:46:56,722 INFO L158 Benchmark]: Boogie Preprocessor took 27.13ms. Allocated memory is still 151.0MB. Free memory was 94.7MB in the beginning and 93.5MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:46:56,722 INFO L158 Benchmark]: RCFGBuilder took 466.41ms. Allocated memory is still 151.0MB. Free memory was 93.5MB in the beginning and 77.3MB in the end (delta: 16.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-23 15:46:56,723 INFO L158 Benchmark]: TraceAbstraction took 6103.99ms. Allocated memory was 151.0MB in the beginning and 268.4MB in the end (delta: 117.4MB). Free memory was 76.3MB in the beginning and 149.5MB in the end (delta: -73.2MB). Peak memory consumption was 116.3MB. Max. memory is 16.1GB. [2022-11-23 15:46:56,725 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 151.0MB. Free memory is still 91.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 249.59ms. Allocated memory is still 151.0MB. Free memory was 107.0MB in the beginning and 96.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.04ms. Allocated memory is still 151.0MB. Free memory was 96.5MB in the beginning and 94.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.13ms. Allocated memory is still 151.0MB. Free memory was 94.7MB in the beginning and 93.5MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 466.41ms. Allocated memory is still 151.0MB. Free memory was 93.5MB in the beginning and 77.3MB in the end (delta: 16.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 6103.99ms. Allocated memory was 151.0MB in the beginning and 268.4MB in the end (delta: 117.4MB). Free memory was 76.3MB in the beginning and 149.5MB in the end (delta: -73.2MB). Peak memory consumption was 116.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: no need to replace index de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: no need to replace index: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.constructReplacementForSelectCase(DerPreprocessor.java:333) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-23 15:46:56,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-industry-pattern/array_of_struct_ptr_cond_init.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d48e7f91c207323ca4789c990d64e958c1524faa33e5de2c1f0c6fd7803f4f2e --- 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-4e7fbc6 [2022-11-23 15:46:59,147 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:46:59,150 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:46:59,185 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:46:59,186 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:46:59,189 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:46:59,192 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:46:59,196 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:46:59,197 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:46:59,203 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:46:59,204 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:46:59,206 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:46:59,207 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:46:59,209 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:46:59,210 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:46:59,217 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:46:59,218 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:46:59,219 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:46:59,221 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:46:59,227 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:46:59,229 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:46:59,231 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:46:59,232 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:46:59,233 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:46:59,241 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:46:59,242 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:46:59,242 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:46:59,244 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:46:59,245 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:46:59,246 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:46:59,246 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:46:59,247 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:46:59,249 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:46:59,250 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:46:59,260 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:46:59,260 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:46:59,261 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:46:59,261 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:46:59,262 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:46:59,263 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:46:59,263 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:46:59,265 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-23 15:46:59,305 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:46:59,305 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:46:59,307 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:46:59,307 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:46:59,308 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:46:59,308 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:46:59,308 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:46:59,309 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:46:59,309 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:46:59,309 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:46:59,310 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:46:59,310 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:46:59,311 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:46:59,311 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 15:46:59,312 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 15:46:59,312 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:46:59,312 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:46:59,312 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:46:59,313 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:46:59,313 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 15:46:59,313 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-23 15:46:59,313 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-23 15:46:59,314 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 15:46:59,314 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:46:59,314 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:46:59,314 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:46:59,315 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:46:59,315 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 15:46:59,315 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:46:59,315 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:46:59,316 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:46:59,316 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:46:59,316 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:46:59,316 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-23 15:46:59,317 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-23 15:46:59,317 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:46:59,317 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:46:59,317 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 15:46:59,318 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d48e7f91c207323ca4789c990d64e958c1524faa33e5de2c1f0c6fd7803f4f2e [2022-11-23 15:46:59,743 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:46:59,767 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:46:59,771 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:46:59,773 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:46:59,773 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:46:59,775 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/array-industry-pattern/array_of_struct_ptr_cond_init.i [2022-11-23 15:47:02,781 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:47:03,043 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:47:03,043 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/sv-benchmarks/c/array-industry-pattern/array_of_struct_ptr_cond_init.i [2022-11-23 15:47:03,049 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/data/168fe6865/0c6c2cac86fd40a2b77801eade1930cb/FLAGb8285f61a [2022-11-23 15:47:03,062 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/data/168fe6865/0c6c2cac86fd40a2b77801eade1930cb [2022-11-23 15:47:03,065 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:47:03,066 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:47:03,068 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:47:03,068 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:47:03,076 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:47:03,077 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:47:03" (1/1) ... [2022-11-23 15:47:03,078 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@149e1191 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:47:03, skipping insertion in model container [2022-11-23 15:47:03,079 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:47:03" (1/1) ... [2022-11-23 15:47:03,086 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:47:03,110 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:47:03,271 WARN L237 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_9cc9a9e5-8ef1-4604-8142-f167c7c19972/sv-benchmarks/c/array-industry-pattern/array_of_struct_ptr_cond_init.i[999,1012] [2022-11-23 15:47:03,307 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:47:03,326 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-23 15:47:03,331 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:47:03,346 WARN L237 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_9cc9a9e5-8ef1-4604-8142-f167c7c19972/sv-benchmarks/c/array-industry-pattern/array_of_struct_ptr_cond_init.i[999,1012] [2022-11-23 15:47:03,359 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:47:03,374 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:47:03,397 WARN L237 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_9cc9a9e5-8ef1-4604-8142-f167c7c19972/sv-benchmarks/c/array-industry-pattern/array_of_struct_ptr_cond_init.i[999,1012] [2022-11-23 15:47:03,414 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:47:03,439 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:47:03,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:47:03 WrapperNode [2022-11-23 15:47:03,440 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:47:03,442 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:47:03,442 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:47:03,443 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:47:03,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:47:03" (1/1) ... [2022-11-23 15:47:03,472 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:47:03" (1/1) ... [2022-11-23 15:47:03,500 INFO L138 Inliner]: procedures = 22, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 65 [2022-11-23 15:47:03,500 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:47:03,502 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:47:03,502 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:47:03,502 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:47:03,512 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:47:03" (1/1) ... [2022-11-23 15:47:03,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:47:03" (1/1) ... [2022-11-23 15:47:03,522 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:47:03" (1/1) ... [2022-11-23 15:47:03,522 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:47:03" (1/1) ... [2022-11-23 15:47:03,538 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:47:03" (1/1) ... [2022-11-23 15:47:03,547 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:47:03" (1/1) ... [2022-11-23 15:47:03,550 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:47:03" (1/1) ... [2022-11-23 15:47:03,555 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:47:03" (1/1) ... [2022-11-23 15:47:03,557 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:47:03,561 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:47:03,561 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:47:03,562 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:47:03,563 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:47:03" (1/1) ... [2022-11-23 15:47:03,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:47:03,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:47:03,601 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:47:03,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:47:03,645 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 15:47:03,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:47:03,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-23 15:47:03,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 15:47:03,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 15:47:03,646 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-23 15:47:03,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:47:03,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:47:03,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-23 15:47:03,778 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:47:03,788 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:47:04,061 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:47:04,067 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:47:04,069 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-23 15:47:04,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:47:04 BoogieIcfgContainer [2022-11-23 15:47:04,071 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:47:04,073 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:47:04,073 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:47:04,076 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:47:04,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:47:03" (1/3) ... [2022-11-23 15:47:04,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c5767f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:47:04, skipping insertion in model container [2022-11-23 15:47:04,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:47:03" (2/3) ... [2022-11-23 15:47:04,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c5767f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:47:04, skipping insertion in model container [2022-11-23 15:47:04,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:47:04" (3/3) ... [2022-11-23 15:47:04,081 INFO L112 eAbstractionObserver]: Analyzing ICFG array_of_struct_ptr_cond_init.i [2022-11-23 15:47:04,100 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:47:04,100 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 15:47:04,165 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:47:04,172 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=FINITE_AUTOMATA, 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;@7953656e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:47:04,172 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 15:47:04,175 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 18 states have internal predecessors, (25), 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) [2022-11-23 15:47:04,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 15:47:04,184 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:47:04,185 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:47:04,185 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:47:04,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:47:04,194 INFO L85 PathProgramCache]: Analyzing trace with hash 650130346, now seen corresponding path program 1 times [2022-11-23 15:47:04,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:47:04,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1338487803] [2022-11-23 15:47:04,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:47:04,208 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:47:04,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:47:04,209 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 15:47:04,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-23 15:47:04,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:47:04,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-23 15:47:04,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:47:04,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:47:04,307 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:47:04,307 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:47:04,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1338487803] [2022-11-23 15:47:04,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1338487803] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:47:04,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:47:04,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 15:47:04,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199842871] [2022-11-23 15:47:04,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:47:04,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 15:47:04,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:47:04,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 15:47:04,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 15:47:04,361 INFO L87 Difference]: Start difference. First operand has 19 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 18 states have internal predecessors, (25), 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) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2022-11-23 15:47:04,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:47:04,376 INFO L93 Difference]: Finished difference Result 31 states and 40 transitions. [2022-11-23 15:47:04,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 15:47:04,378 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2022-11-23 15:47:04,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:47:04,395 INFO L225 Difference]: With dead ends: 31 [2022-11-23 15:47:04,396 INFO L226 Difference]: Without dead ends: 15 [2022-11-23 15:47:04,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 15:47:04,407 INFO L413 NwaCegarLoop]: 22 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, 22 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 [2022-11-23 15:47:04,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:47:04,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-23 15:47:04,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-11-23 15:47:04,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 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) [2022-11-23 15:47:04,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2022-11-23 15:47:04,448 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 8 [2022-11-23 15:47:04,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:47:04,448 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2022-11-23 15:47:04,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2022-11-23 15:47:04,449 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2022-11-23 15:47:04,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 15:47:04,449 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:47:04,450 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:47:04,465 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-23 15:47:04,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:47:04,665 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:47:04,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:47:04,666 INFO L85 PathProgramCache]: Analyzing trace with hash 220693081, now seen corresponding path program 1 times [2022-11-23 15:47:04,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:47:04,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1196647750] [2022-11-23 15:47:04,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:47:04,667 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:47:04,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:47:04,708 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 15:47:04,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-23 15:47:04,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:47:04,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 15:47:04,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:47:04,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:47:04,828 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:47:04,829 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:47:04,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1196647750] [2022-11-23 15:47:04,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1196647750] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:47:04,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:47:04,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:47:04,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302011734] [2022-11-23 15:47:04,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:47:04,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:47:04,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:47:04,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:47:04,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:47:04,839 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-11-23 15:47:04,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:47:04,897 INFO L93 Difference]: Finished difference Result 35 states and 42 transitions. [2022-11-23 15:47:04,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:47:04,899 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2022-11-23 15:47:04,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:47:04,903 INFO L225 Difference]: With dead ends: 35 [2022-11-23 15:47:04,904 INFO L226 Difference]: Without dead ends: 27 [2022-11-23 15:47:04,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:47:04,905 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 12 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:47:04,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 23 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:47:04,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-23 15:47:04,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 16. [2022-11-23 15:47:04,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 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) [2022-11-23 15:47:04,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2022-11-23 15:47:04,919 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 8 [2022-11-23 15:47:04,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:47:04,919 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2022-11-23 15:47:04,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-11-23 15:47:04,919 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2022-11-23 15:47:04,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-23 15:47:04,920 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:47:04,920 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:47:04,932 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-23 15:47:05,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:47:05,132 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:47:05,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:47:05,132 INFO L85 PathProgramCache]: Analyzing trace with hash 702319140, now seen corresponding path program 1 times [2022-11-23 15:47:05,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:47:05,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1996912790] [2022-11-23 15:47:05,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:47:05,134 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:47:05,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:47:05,135 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 15:47:05,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-23 15:47:05,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:47:05,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 15:47:05,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:47:05,254 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:47:05,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:47:05,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:47:05,299 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:47:05,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1996912790] [2022-11-23 15:47:05,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1996912790] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:47:05,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [814727722] [2022-11-23 15:47:05,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:47:05,300 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 15:47:05,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 15:47:05,307 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 15:47:05,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2022-11-23 15:47:05,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:47:05,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 15:47:05,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:47:05,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:47:05,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:47:05,596 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:47:05,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [814727722] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:47:05,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312446088] [2022-11-23 15:47:05,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:47:05,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:47:05,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:47:05,601 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:47:05,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 15:47:05,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:47:05,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 15:47:05,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:47:05,773 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:47:05,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:47:05,815 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:47:05,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312446088] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:47:05,815 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-23 15:47:05,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 6 [2022-11-23 15:47:05,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158917296] [2022-11-23 15:47:05,816 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-23 15:47:05,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 15:47:05,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:47:05,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 15:47:05,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:47:05,818 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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) [2022-11-23 15:47:05,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:47:05,943 INFO L93 Difference]: Finished difference Result 61 states and 74 transitions. [2022-11-23 15:47:05,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:47:05,944 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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 13 [2022-11-23 15:47:05,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:47:05,945 INFO L225 Difference]: With dead ends: 61 [2022-11-23 15:47:05,945 INFO L226 Difference]: Without dead ends: 53 [2022-11-23 15:47:05,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-11-23 15:47:05,946 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 72 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:47:05,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 51 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:47:05,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-11-23 15:47:05,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 31. [2022-11-23 15:47:05,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 30 states have internal predecessors, (37), 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) [2022-11-23 15:47:05,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2022-11-23 15:47:05,954 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 13 [2022-11-23 15:47:05,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:47:05,954 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2022-11-23 15:47:05,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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) [2022-11-23 15:47:05,955 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2022-11-23 15:47:05,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-23 15:47:05,955 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:47:05,956 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:47:05,972 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-23 15:47:06,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2022-11-23 15:47:06,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 15:47:06,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:47:06,567 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:47:06,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:47:06,568 INFO L85 PathProgramCache]: Analyzing trace with hash -239814631, now seen corresponding path program 2 times [2022-11-23 15:47:06,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:47:06,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [34548670] [2022-11-23 15:47:06,569 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 15:47:06,569 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:47:06,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:47:06,570 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 15:47:06,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-23 15:47:06,797 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 15:47:06,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:47:06,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 15:47:06,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:47:06,935 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:47:06,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:47:07,119 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:47:07,119 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:47:07,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [34548670] [2022-11-23 15:47:07,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [34548670] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:47:07,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1322911608] [2022-11-23 15:47:07,120 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 15:47:07,120 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 15:47:07,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 15:47:07,121 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 15:47:07,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2022-11-23 15:47:07,389 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 15:47:07,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:47:07,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 15:47:07,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:47:07,465 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:47:07,465 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:47:07,528 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:47:07,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1322911608] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:47:07,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966631562] [2022-11-23 15:47:07,529 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 15:47:07,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:47:07,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:47:07,530 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:47:07,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-23 15:47:07,701 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 15:47:07,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:47:07,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 15:47:07,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:47:07,754 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:47:07,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:47:07,817 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:47:07,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966631562] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:47:07,818 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-23 15:47:07,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 7] total 12 [2022-11-23 15:47:07,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736999591] [2022-11-23 15:47:07,818 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-23 15:47:07,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 15:47:07,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:47:07,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 15:47:07,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-23 15:47:07,822 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 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) [2022-11-23 15:47:08,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:47:08,387 INFO L93 Difference]: Finished difference Result 133 states and 161 transitions. [2022-11-23 15:47:08,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 15:47:08,388 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 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 28 [2022-11-23 15:47:08,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:47:08,389 INFO L225 Difference]: With dead ends: 133 [2022-11-23 15:47:08,390 INFO L226 Difference]: Without dead ends: 125 [2022-11-23 15:47:08,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2022-11-23 15:47:08,391 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 248 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 15:47:08,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 273 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 15:47:08,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-11-23 15:47:08,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 61. [2022-11-23 15:47:08,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.2166666666666666) internal successors, (73), 60 states have internal predecessors, (73), 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) [2022-11-23 15:47:08,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 73 transitions. [2022-11-23 15:47:08,407 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 73 transitions. Word has length 28 [2022-11-23 15:47:08,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:47:08,407 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 73 transitions. [2022-11-23 15:47:08,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 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) [2022-11-23 15:47:08,408 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 73 transitions. [2022-11-23 15:47:08,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-23 15:47:08,415 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:47:08,415 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:47:08,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2022-11-23 15:47:08,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-23 15:47:08,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-23 15:47:09,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:47:09,020 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:47:09,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:47:09,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1867076793, now seen corresponding path program 3 times [2022-11-23 15:47:09,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:47:09,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [405019577] [2022-11-23 15:47:09,021 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 15:47:09,021 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 15:47:09,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:47:09,024 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 15:47:09,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-23 15:47:11,960 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-11-23 15:47:11,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:47:12,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-23 15:47:12,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:47:12,218 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:47:12,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:47:12,808 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:47:12,809 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:47:12,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [405019577] [2022-11-23 15:47:12,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [405019577] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:47:12,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [75360214] [2022-11-23 15:47:12,809 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 15:47:12,809 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 15:47:12,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 15:47:12,812 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 15:47:12,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2022-11-23 15:47:13,128 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 15:47:13,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191993985] [2022-11-23 15:47:13,129 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 15:47:13,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:47:13,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:47:13,130 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:47:13,136 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (11)] Ended with exit code 1 [2022-11-23 15:47:13,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cc9a9e5-8ef1-4604-8142-f167c7c19972/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process