./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d17f6d-1757-439a-a4f3-49951931899c/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d17f6d-1757-439a-a4f3-49951931899c/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d17f6d-1757-439a-a4f3-49951931899c/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d17f6d-1757-439a-a4f3-49951931899c/bin/uautomizer-AkOaLMaTGY/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d17f6d-1757-439a-a4f3-49951931899c/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d17f6d-1757-439a-a4f3-49951931899c/bin/uautomizer-AkOaLMaTGY --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 80f1df6d4bc7961b41bec7d16d328ef23e1639399b1fb3a18bcdda9891a98148 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 08:42:45,127 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 08:42:45,130 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 08:42:45,170 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 08:42:45,170 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 08:42:45,172 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 08:42:45,174 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 08:42:45,177 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 08:42:45,179 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 08:42:45,181 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 08:42:45,182 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 08:42:45,184 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 08:42:45,185 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 08:42:45,186 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 08:42:45,188 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 08:42:45,190 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 08:42:45,191 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 08:42:45,193 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 08:42:45,196 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 08:42:45,198 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 08:42:45,201 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 08:42:45,202 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 08:42:45,204 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 08:42:45,205 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 08:42:45,211 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 08:42:45,212 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 08:42:45,212 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 08:42:45,213 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 08:42:45,214 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 08:42:45,215 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 08:42:45,216 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 08:42:45,217 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 08:42:45,219 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 08:42:45,220 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 08:42:45,221 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 08:42:45,222 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 08:42:45,223 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 08:42:45,223 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 08:42:45,224 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 08:42:45,225 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 08:42:45,226 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 08:42:45,227 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d17f6d-1757-439a-a4f3-49951931899c/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-07 08:42:45,254 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 08:42:45,254 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 08:42:45,255 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 08:42:45,255 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 08:42:45,256 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 08:42:45,257 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 08:42:45,257 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 08:42:45,257 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 08:42:45,258 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 08:42:45,258 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 08:42:45,258 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 08:42:45,259 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 08:42:45,259 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 08:42:45,259 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 08:42:45,260 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 08:42:45,260 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 08:42:45,260 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 08:42:45,260 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 08:42:45,261 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 08:42:45,261 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 08:42:45,261 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 08:42:45,262 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 08:42:45,262 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:42:45,262 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 08:42:45,263 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 08:42:45,263 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 08:42:45,263 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 08:42:45,264 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 08:42:45,264 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 08:42:45,264 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 08:42:45,264 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 08:42:45,264 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 08:42:45,265 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_89d17f6d-1757-439a-a4f3-49951931899c/bin/uautomizer-AkOaLMaTGY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d17f6d-1757-439a-a4f3-49951931899c/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 80f1df6d4bc7961b41bec7d16d328ef23e1639399b1fb3a18bcdda9891a98148 [2021-11-07 08:42:45,516 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 08:42:45,539 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 08:42:45,542 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 08:42:45,543 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 08:42:45,544 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 08:42:45,545 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d17f6d-1757-439a-a4f3-49951931899c/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-2.i [2021-11-07 08:42:45,617 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d17f6d-1757-439a-a4f3-49951931899c/bin/uautomizer-AkOaLMaTGY/data/549988e36/6ac0b0d6a9a64c0bbd7fad43b02c7852/FLAG085fdde79 [2021-11-07 08:42:46,348 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 08:42:46,358 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d17f6d-1757-439a-a4f3-49951931899c/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-2.i [2021-11-07 08:42:46,384 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d17f6d-1757-439a-a4f3-49951931899c/bin/uautomizer-AkOaLMaTGY/data/549988e36/6ac0b0d6a9a64c0bbd7fad43b02c7852/FLAG085fdde79 [2021-11-07 08:42:46,597 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d17f6d-1757-439a-a4f3-49951931899c/bin/uautomizer-AkOaLMaTGY/data/549988e36/6ac0b0d6a9a64c0bbd7fad43b02c7852 [2021-11-07 08:42:46,600 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 08:42:46,605 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 08:42:46,629 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 08:42:46,630 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 08:42:46,633 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 08:42:46,634 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:42:46" (1/1) ... [2021-11-07 08:42:46,636 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24fe30bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:46, skipping insertion in model container [2021-11-07 08:42:46,636 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:42:46" (1/1) ... [2021-11-07 08:42:46,643 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 08:42:46,824 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 08:42:47,744 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d17f6d-1757-439a-a4f3-49951931899c/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-2.i[33021,33034] [2021-11-07 08:42:47,917 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d17f6d-1757-439a-a4f3-49951931899c/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-2.i[45234,45247] [2021-11-07 08:42:47,933 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:42:47,942 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 08:42:47,973 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d17f6d-1757-439a-a4f3-49951931899c/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-2.i[33021,33034] [2021-11-07 08:42:48,081 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d17f6d-1757-439a-a4f3-49951931899c/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-2.i[45234,45247] [2021-11-07 08:42:48,102 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:42:48,136 INFO L208 MainTranslator]: Completed translation [2021-11-07 08:42:48,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:48 WrapperNode [2021-11-07 08:42:48,137 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 08:42:48,138 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 08:42:48,138 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 08:42:48,138 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 08:42:48,146 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:48" (1/1) ... [2021-11-07 08:42:48,197 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:48" (1/1) ... [2021-11-07 08:42:48,341 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 08:42:48,342 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 08:42:48,342 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 08:42:48,342 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 08:42:48,352 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:48" (1/1) ... [2021-11-07 08:42:48,353 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:48" (1/1) ... [2021-11-07 08:42:48,380 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:48" (1/1) ... [2021-11-07 08:42:48,381 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:48" (1/1) ... [2021-11-07 08:42:48,464 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:48" (1/1) ... [2021-11-07 08:42:48,500 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:48" (1/1) ... [2021-11-07 08:42:48,505 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:48" (1/1) ... [2021-11-07 08:42:48,524 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 08:42:48,534 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 08:42:48,534 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 08:42:48,535 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 08:42:48,536 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:48" (1/1) ... [2021-11-07 08:42:48,544 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:42:48,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d17f6d-1757-439a-a4f3-49951931899c/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:42:48,576 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d17f6d-1757-439a-a4f3-49951931899c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 08:42:48,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d17f6d-1757-439a-a4f3-49951931899c/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 08:42:48,625 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 08:42:48,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 08:42:48,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 08:42:48,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 08:42:48,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 08:42:48,626 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 08:42:48,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 08:42:48,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 08:42:48,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 08:42:48,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 08:42:48,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 08:42:50,307 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 08:42:50,308 INFO L299 CfgBuilder]: Removed 145 assume(true) statements. [2021-11-07 08:42:50,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:42:50 BoogieIcfgContainer [2021-11-07 08:42:50,311 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 08:42:50,315 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 08:42:50,316 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 08:42:50,319 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 08:42:50,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:42:46" (1/3) ... [2021-11-07 08:42:50,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36061bb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:42:50, skipping insertion in model container [2021-11-07 08:42:50,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:48" (2/3) ... [2021-11-07 08:42:50,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36061bb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:42:50, skipping insertion in model container [2021-11-07 08:42:50,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:42:50" (3/3) ... [2021-11-07 08:42:50,323 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test8-2.i [2021-11-07 08:42:50,329 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 08:42:50,329 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 31 error locations. [2021-11-07 08:42:50,407 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 08:42:50,413 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 08:42:50,416 INFO L340 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2021-11-07 08:42:50,452 INFO L276 IsEmpty]: Start isEmpty. Operand has 331 states, 299 states have (on average 1.7826086956521738) internal successors, (533), 330 states have internal predecessors, (533), 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) [2021-11-07 08:42:50,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-07 08:42:50,460 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:42:50,461 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:42:50,461 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-07 08:42:50,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:42:50,467 INFO L85 PathProgramCache]: Analyzing trace with hash -109840528, now seen corresponding path program 1 times [2021-11-07 08:42:50,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:42:50,478 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892350688] [2021-11-07 08:42:50,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:42:50,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:42:50,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:42:50,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:42:50,645 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:42:50,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892350688] [2021-11-07 08:42:50,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892350688] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:42:50,648 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:42:50,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 08:42:50,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876857812] [2021-11-07 08:42:50,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 08:42:50,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:42:50,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 08:42:50,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 08:42:50,676 INFO L87 Difference]: Start difference. First operand has 331 states, 299 states have (on average 1.7826086956521738) internal successors, (533), 330 states have internal predecessors, (533), 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 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:42:50,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:42:50,753 INFO L93 Difference]: Finished difference Result 660 states and 1064 transitions. [2021-11-07 08:42:50,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 08:42:50,772 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-07 08:42:50,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:42:50,786 INFO L225 Difference]: With dead ends: 660 [2021-11-07 08:42:50,786 INFO L226 Difference]: Without dead ends: 298 [2021-11-07 08:42:50,791 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 08:42:50,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-11-07 08:42:50,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2021-11-07 08:42:50,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 267 states have (on average 1.4344569288389513) internal successors, (383), 297 states have internal predecessors, (383), 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) [2021-11-07 08:42:50,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 383 transitions. [2021-11-07 08:42:50,852 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 383 transitions. Word has length 9 [2021-11-07 08:42:50,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:42:50,852 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 383 transitions. [2021-11-07 08:42:50,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:42:50,853 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 383 transitions. [2021-11-07 08:42:50,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 08:42:50,857 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:42:50,857 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:42:50,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 08:42:50,858 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-07 08:42:50,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:42:50,861 INFO L85 PathProgramCache]: Analyzing trace with hash 518597571, now seen corresponding path program 1 times [2021-11-07 08:42:50,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:42:50,862 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463343156] [2021-11-07 08:42:50,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:42:50,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:42:50,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:42:51,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:42:51,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:42:51,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463343156] [2021-11-07 08:42:51,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463343156] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:42:51,021 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:42:51,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:42:51,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661082167] [2021-11-07 08:42:51,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:42:51,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:42:51,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:42:51,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:42:51,025 INFO L87 Difference]: Start difference. First operand 298 states and 383 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:42:51,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:42:51,490 INFO L93 Difference]: Finished difference Result 619 states and 798 transitions. [2021-11-07 08:42:51,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:42:51,491 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-07 08:42:51,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:42:51,495 INFO L225 Difference]: With dead ends: 619 [2021-11-07 08:42:51,495 INFO L226 Difference]: Without dead ends: 474 [2021-11-07 08:42:51,497 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:42:51,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2021-11-07 08:42:51,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 300. [2021-11-07 08:42:51,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 269 states have (on average 1.4312267657992566) internal successors, (385), 299 states have internal predecessors, (385), 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) [2021-11-07 08:42:51,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 385 transitions. [2021-11-07 08:42:51,539 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 385 transitions. Word has length 44 [2021-11-07 08:42:51,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:42:51,539 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 385 transitions. [2021-11-07 08:42:51,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:42:51,539 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 385 transitions. [2021-11-07 08:42:51,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-07 08:42:51,543 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:42:51,543 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:42:51,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 08:42:51,545 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-07 08:42:51,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:42:51,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1543983351, now seen corresponding path program 1 times [2021-11-07 08:42:51,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:42:51,550 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566982994] [2021-11-07 08:42:51,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:42:51,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:42:51,595 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 08:42:51,595 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [516252557] [2021-11-07 08:42:51,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:42:51,596 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:42:51,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d17f6d-1757-439a-a4f3-49951931899c/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:42:51,597 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d17f6d-1757-439a-a4f3-49951931899c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:42:51,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d17f6d-1757-439a-a4f3-49951931899c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 08:42:51,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:42:51,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 08:42:51,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:42:52,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:42:52,030 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:42:52,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566982994] [2021-11-07 08:42:52,030 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 08:42:52,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516252557] [2021-11-07 08:42:52,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516252557] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:42:52,031 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:42:52,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:42:52,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027905586] [2021-11-07 08:42:52,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:42:52,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:42:52,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:42:52,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:42:52,033 INFO L87 Difference]: Start difference. First operand 300 states and 385 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2021-11-07 08:42:52,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:42:52,128 INFO L93 Difference]: Finished difference Result 617 states and 797 transitions. [2021-11-07 08:42:52,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:42:52,129 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 57 [2021-11-07 08:42:52,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:42:52,131 INFO L225 Difference]: With dead ends: 617 [2021-11-07 08:42:52,131 INFO L226 Difference]: Without dead ends: 321 [2021-11-07 08:42:52,132 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:42:52,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2021-11-07 08:42:52,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 320. [2021-11-07 08:42:52,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 289 states have (on average 1.4013840830449826) internal successors, (405), 319 states have internal predecessors, (405), 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) [2021-11-07 08:42:52,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 405 transitions. [2021-11-07 08:42:52,144 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 405 transitions. Word has length 57 [2021-11-07 08:42:52,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:42:52,144 INFO L470 AbstractCegarLoop]: Abstraction has 320 states and 405 transitions. [2021-11-07 08:42:52,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2021-11-07 08:42:52,145 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 405 transitions. [2021-11-07 08:42:52,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-07 08:42:52,146 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:42:52,147 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:42:52,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d17f6d-1757-439a-a4f3-49951931899c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 08:42:52,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d17f6d-1757-439a-a4f3-49951931899c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:42:52,374 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-07 08:42:52,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:42:52,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1379176647, now seen corresponding path program 1 times [2021-11-07 08:42:52,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:42:52,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035922577] [2021-11-07 08:42:52,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:42:52,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:42:52,397 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 08:42:52,398 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1440644177] [2021-11-07 08:42:52,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:42:52,398 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:42:52,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d17f6d-1757-439a-a4f3-49951931899c/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:42:52,399 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d17f6d-1757-439a-a4f3-49951931899c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:42:52,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d17f6d-1757-439a-a4f3-49951931899c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 08:42:52,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:42:52,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 08:42:52,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:42:52,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:42:52,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:42:52,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035922577] [2021-11-07 08:42:52,751 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 08:42:52,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440644177] [2021-11-07 08:42:52,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440644177] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:42:52,752 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:42:52,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:42:52,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820981936] [2021-11-07 08:42:52,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:42:52,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:42:52,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:42:52,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:42:52,755 INFO L87 Difference]: Start difference. First operand 320 states and 405 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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) [2021-11-07 08:42:52,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:42:52,845 INFO L93 Difference]: Finished difference Result 628 states and 798 transitions. [2021-11-07 08:42:52,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:42:52,846 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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 57 [2021-11-07 08:42:52,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:42:52,847 INFO L225 Difference]: With dead ends: 628 [2021-11-07 08:42:52,848 INFO L226 Difference]: Without dead ends: 312 [2021-11-07 08:42:52,849 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:42:52,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2021-11-07 08:42:52,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 306. [2021-11-07 08:42:52,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 275 states have (on average 1.3963636363636365) internal successors, (384), 305 states have internal predecessors, (384), 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) [2021-11-07 08:42:52,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 384 transitions. [2021-11-07 08:42:52,880 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 384 transitions. Word has length 57 [2021-11-07 08:42:52,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:42:52,880 INFO L470 AbstractCegarLoop]: Abstraction has 306 states and 384 transitions. [2021-11-07 08:42:52,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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) [2021-11-07 08:42:52,880 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 384 transitions. [2021-11-07 08:42:52,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-07 08:42:52,886 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:42:52,886 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:42:52,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d17f6d-1757-439a-a4f3-49951931899c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 08:42:53,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d17f6d-1757-439a-a4f3-49951931899c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:42:53,110 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-07 08:42:53,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:42:53,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1996694677, now seen corresponding path program 1 times [2021-11-07 08:42:53,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:42:53,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7601793] [2021-11-07 08:42:53,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:42:53,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:42:53,152 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 08:42:53,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1326389505] [2021-11-07 08:42:53,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:42:53,153 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:42:53,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d17f6d-1757-439a-a4f3-49951931899c/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:42:53,171 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d17f6d-1757-439a-a4f3-49951931899c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:42:53,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d17f6d-1757-439a-a4f3-49951931899c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 08:42:53,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:42:53,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 08:42:53,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:42:53,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:42:53,857 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:42:53,857 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7601793] [2021-11-07 08:42:53,858 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 08:42:53,858 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326389505] [2021-11-07 08:42:53,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326389505] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:42:53,863 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:42:53,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:42:53,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576888174] [2021-11-07 08:42:53,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:42:53,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:42:53,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:42:53,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:42:53,869 INFO L87 Difference]: Start difference. First operand 306 states and 384 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2021-11-07 08:42:53,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:42:53,956 INFO L93 Difference]: Finished difference Result 779 states and 977 transitions. [2021-11-07 08:42:53,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:42:53,964 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 57 [2021-11-07 08:42:53,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:42:53,986 INFO L225 Difference]: With dead ends: 779 [2021-11-07 08:42:53,986 INFO L226 Difference]: Without dead ends: 477 [2021-11-07 08:42:53,987 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:42:53,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2021-11-07 08:42:54,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 444. [2021-11-07 08:42:54,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 413 states have (on average 1.3995157384987893) internal successors, (578), 443 states have internal predecessors, (578), 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) [2021-11-07 08:42:54,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 578 transitions. [2021-11-07 08:42:54,005 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 578 transitions. Word has length 57 [2021-11-07 08:42:54,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:42:54,007 INFO L470 AbstractCegarLoop]: Abstraction has 444 states and 578 transitions. [2021-11-07 08:42:54,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2021-11-07 08:42:54,008 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 578 transitions. [2021-11-07 08:42:54,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-07 08:42:54,011 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:42:54,011 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:42:54,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d17f6d-1757-439a-a4f3-49951931899c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-07 08:42:54,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d17f6d-1757-439a-a4f3-49951931899c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:42:54,226 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-07 08:42:54,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:42:54,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1378561412, now seen corresponding path program 1 times [2021-11-07 08:42:54,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:42:54,227 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022509282] [2021-11-07 08:42:54,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:42:54,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:42:54,281 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 08:42:54,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [632300584] [2021-11-07 08:42:54,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:42:54,282 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:42:54,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d17f6d-1757-439a-a4f3-49951931899c/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:42:54,297 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d17f6d-1757-439a-a4f3-49951931899c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:42:54,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d17f6d-1757-439a-a4f3-49951931899c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 08:42:55,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:42:55,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 08:42:55,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:42:55,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:42:55,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:42:55,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022509282] [2021-11-07 08:42:55,712 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 08:42:55,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632300584] [2021-11-07 08:42:55,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632300584] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:42:55,713 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:42:55,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:42:55,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956041838] [2021-11-07 08:42:55,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:42:55,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:42:55,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:42:55,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:42:55,717 INFO L87 Difference]: Start difference. First operand 444 states and 578 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2021-11-07 08:42:55,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:42:55,778 INFO L93 Difference]: Finished difference Result 841 states and 1105 transitions. [2021-11-07 08:42:55,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:42:55,779 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 64 [2021-11-07 08:42:55,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:42:55,782 INFO L225 Difference]: With dead ends: 841 [2021-11-07 08:42:55,783 INFO L226 Difference]: Without dead ends: 445 [2021-11-07 08:42:55,784 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:42:55,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2021-11-07 08:42:55,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 445. [2021-11-07 08:42:55,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 414 states have (on average 1.3985507246376812) internal successors, (579), 444 states have internal predecessors, (579), 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) [2021-11-07 08:42:55,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 579 transitions. [2021-11-07 08:42:55,818 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 579 transitions. Word has length 64 [2021-11-07 08:42:55,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:42:55,819 INFO L470 AbstractCegarLoop]: Abstraction has 445 states and 579 transitions. [2021-11-07 08:42:55,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2021-11-07 08:42:55,819 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 579 transitions. [2021-11-07 08:42:55,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-07 08:42:55,820 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:42:55,821 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:42:55,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d17f6d-1757-439a-a4f3-49951931899c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-07 08:42:56,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d17f6d-1757-439a-a4f3-49951931899c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:42:56,037 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-07 08:42:56,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:42:56,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1359691312, now seen corresponding path program 1 times [2021-11-07 08:42:56,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:42:56,038 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914684216] [2021-11-07 08:42:56,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:42:56,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:42:56,086 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 08:42:56,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [858202676] [2021-11-07 08:42:56,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:42:56,089 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:42:56,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d17f6d-1757-439a-a4f3-49951931899c/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:42:56,100 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d17f6d-1757-439a-a4f3-49951931899c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:42:56,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d17f6d-1757-439a-a4f3-49951931899c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-07 08:42:57,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:42:57,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 08:42:57,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:42:57,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 08:42:57,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:42:57,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914684216] [2021-11-07 08:42:57,457 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 08:42:57,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858202676] [2021-11-07 08:42:57,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858202676] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:42:57,461 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:42:57,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:42:57,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070526782] [2021-11-07 08:42:57,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:42:57,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:42:57,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:42:57,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:42:57,464 INFO L87 Difference]: Start difference. First operand 445 states and 579 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2021-11-07 08:42:57,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:42:57,516 INFO L93 Difference]: Finished difference Result 843 states and 1107 transitions. [2021-11-07 08:42:57,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:42:57,517 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 65 [2021-11-07 08:42:57,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:42:57,534 INFO L225 Difference]: With dead ends: 843 [2021-11-07 08:42:57,534 INFO L226 Difference]: Without dead ends: 446 [2021-11-07 08:42:57,535 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:42:57,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2021-11-07 08:42:57,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 446. [2021-11-07 08:42:57,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 415 states have (on average 1.3975903614457832) internal successors, (580), 445 states have internal predecessors, (580), 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) [2021-11-07 08:42:57,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 580 transitions. [2021-11-07 08:42:57,570 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 580 transitions. Word has length 65 [2021-11-07 08:42:57,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:42:57,570 INFO L470 AbstractCegarLoop]: Abstraction has 446 states and 580 transitions. [2021-11-07 08:42:57,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2021-11-07 08:42:57,571 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 580 transitions. [2021-11-07 08:42:57,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-07 08:42:57,571 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:42:57,572 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:42:57,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d17f6d-1757-439a-a4f3-49951931899c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-07 08:42:57,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d17f6d-1757-439a-a4f3-49951931899c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:42:57,788 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-07 08:42:57,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:42:57,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1147149435, now seen corresponding path program 1 times [2021-11-07 08:42:57,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:42:57,789 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396694748] [2021-11-07 08:42:57,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:42:57,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:42:57,838 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 08:42:57,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [963996104] [2021-11-07 08:42:57,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:42:57,843 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:42:57,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d17f6d-1757-439a-a4f3-49951931899c/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:42:57,844 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d17f6d-1757-439a-a4f3-49951931899c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:42:57,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d17f6d-1757-439a-a4f3-49951931899c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-07 08:42:59,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:42:59,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-07 08:42:59,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:42:59,565 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 08:42:59,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:42:59,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396694748] [2021-11-07 08:42:59,566 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 08:42:59,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963996104] [2021-11-07 08:42:59,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963996104] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:42:59,566 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 08:42:59,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-11-07 08:42:59,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637350352] [2021-11-07 08:42:59,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:42:59,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:42:59,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:42:59,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:42:59,569 INFO L87 Difference]: Start difference. First operand 446 states and 580 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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) [2021-11-07 08:42:59,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:42:59,643 INFO L93 Difference]: Finished difference Result 845 states and 1109 transitions. [2021-11-07 08:42:59,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:42:59,644 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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 66 [2021-11-07 08:42:59,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:42:59,647 INFO L225 Difference]: With dead ends: 845 [2021-11-07 08:42:59,647 INFO L226 Difference]: Without dead ends: 447 [2021-11-07 08:42:59,648 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:42:59,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2021-11-07 08:42:59,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 447. [2021-11-07 08:42:59,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 416 states have (on average 1.3966346153846154) internal successors, (581), 446 states have internal predecessors, (581), 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) [2021-11-07 08:42:59,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 581 transitions. [2021-11-07 08:42:59,681 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 581 transitions. Word has length 66 [2021-11-07 08:42:59,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:42:59,681 INFO L470 AbstractCegarLoop]: Abstraction has 447 states and 581 transitions. [2021-11-07 08:42:59,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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) [2021-11-07 08:42:59,682 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 581 transitions. [2021-11-07 08:42:59,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-07 08:42:59,682 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:42:59,682 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:42:59,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d17f6d-1757-439a-a4f3-49951931899c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-07 08:42:59,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d17f6d-1757-439a-a4f3-49951931899c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:42:59,901 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-07 08:42:59,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:42:59,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1549801264, now seen corresponding path program 2 times [2021-11-07 08:42:59,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:42:59,902 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761178229] [2021-11-07 08:42:59,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:42:59,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:42:59,919 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 08:42:59,934 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1492086608] [2021-11-07 08:42:59,934 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 08:42:59,934 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:42:59,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d17f6d-1757-439a-a4f3-49951931899c/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:42:59,950 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d17f6d-1757-439a-a4f3-49951931899c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:42:59,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89d17f6d-1757-439a-a4f3-49951931899c/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process