./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-pthread/cs_peterson.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cdae3c-8298-4c1e-be3f-a7931e24ca35/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cdae3c-8298-4c1e-be3f-a7931e24ca35/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cdae3c-8298-4c1e-be3f-a7931e24ca35/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cdae3c-8298-4c1e-be3f-a7931e24ca35/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-pthread/cs_peterson.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cdae3c-8298-4c1e-be3f-a7931e24ca35/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cdae3c-8298-4c1e-be3f-a7931e24ca35/bin/uautomizer-vX5HgA9Q3a --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 4a8be7009a37d1df58713fd67cd9771c39e6139a0416009824ceb58da10928b7 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-21 16:11:25,164 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:11:25,167 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:11:25,199 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:11:25,200 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:11:25,201 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:11:25,203 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:11:25,204 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:11:25,206 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:11:25,207 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:11:25,208 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:11:25,210 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:11:25,210 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:11:25,211 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:11:25,213 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:11:25,214 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:11:25,215 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:11:25,216 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:11:25,218 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:11:25,220 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:11:25,222 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:11:25,224 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:11:25,225 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:11:25,226 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:11:25,230 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:11:25,231 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:11:25,231 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:11:25,232 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:11:25,233 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:11:25,234 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:11:25,235 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:11:25,236 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:11:25,237 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:11:25,238 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:11:25,239 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:11:25,240 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:11:25,241 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:11:25,241 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:11:25,241 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:11:25,243 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:11:25,244 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:11:25,245 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cdae3c-8298-4c1e-be3f-a7931e24ca35/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 16:11:25,268 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:11:25,268 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:11:25,269 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:11:25,269 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:11:25,270 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:11:25,270 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:11:25,271 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:11:25,271 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:11:25,271 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:11:25,272 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:11:25,272 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 16:11:25,272 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:11:25,272 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 16:11:25,273 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:11:25,273 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 16:11:25,273 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:11:25,274 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 16:11:25,274 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 16:11:25,274 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 16:11:25,274 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:11:25,275 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 16:11:25,275 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:11:25,275 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:11:25,276 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:11:25,276 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:11:25,276 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:11:25,277 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:11:25,277 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 16:11:25,277 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 16:11:25,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 16:11:25,278 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 16:11:25,278 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 16:11:25,278 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 16:11:25,278 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_f1cdae3c-8298-4c1e-be3f-a7931e24ca35/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cdae3c-8298-4c1e-be3f-a7931e24ca35/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a8be7009a37d1df58713fd67cd9771c39e6139a0416009824ceb58da10928b7 [2022-11-21 16:11:25,514 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:11:25,542 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:11:25,545 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:11:25,546 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:11:25,547 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:11:25,548 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cdae3c-8298-4c1e-be3f-a7931e24ca35/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/seq-pthread/cs_peterson.i [2022-11-21 16:11:28,750 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:11:29,103 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:11:29,104 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cdae3c-8298-4c1e-be3f-a7931e24ca35/sv-benchmarks/c/seq-pthread/cs_peterson.i [2022-11-21 16:11:29,122 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cdae3c-8298-4c1e-be3f-a7931e24ca35/bin/uautomizer-vX5HgA9Q3a/data/6d420f748/a6e7027d95394949a916e50abecab6e3/FLAGd6f55904e [2022-11-21 16:11:29,145 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cdae3c-8298-4c1e-be3f-a7931e24ca35/bin/uautomizer-vX5HgA9Q3a/data/6d420f748/a6e7027d95394949a916e50abecab6e3 [2022-11-21 16:11:29,148 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:11:29,149 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:11:29,151 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:11:29,151 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:11:29,156 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:11:29,160 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:11:29" (1/1) ... [2022-11-21 16:11:29,161 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cd120a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:11:29, skipping insertion in model container [2022-11-21 16:11:29,161 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:11:29" (1/1) ... [2022-11-21 16:11:29,167 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:11:29,216 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:11:29,622 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cdae3c-8298-4c1e-be3f-a7931e24ca35/sv-benchmarks/c/seq-pthread/cs_peterson.i[23605,23618] [2022-11-21 16:11:29,763 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:11:29,788 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:11:29,839 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cdae3c-8298-4c1e-be3f-a7931e24ca35/sv-benchmarks/c/seq-pthread/cs_peterson.i[23605,23618] [2022-11-21 16:11:29,911 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:11:29,947 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:11:29,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:11:29 WrapperNode [2022-11-21 16:11:29,948 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:11:29,949 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:11:29,949 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:11:29,949 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:11:29,957 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:11:29" (1/1) ... [2022-11-21 16:11:29,985 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:11:29" (1/1) ... [2022-11-21 16:11:30,048 INFO L138 Inliner]: procedures = 145, calls = 276, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 428 [2022-11-21 16:11:30,049 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:11:30,049 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:11:30,050 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:11:30,050 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:11:30,060 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:11:29" (1/1) ... [2022-11-21 16:11:30,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:11:29" (1/1) ... [2022-11-21 16:11:30,073 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:11:29" (1/1) ... [2022-11-21 16:11:30,077 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:11:29" (1/1) ... [2022-11-21 16:11:30,113 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:11:29" (1/1) ... [2022-11-21 16:11:30,136 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:11:29" (1/1) ... [2022-11-21 16:11:30,139 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:11:29" (1/1) ... [2022-11-21 16:11:30,141 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:11:29" (1/1) ... [2022-11-21 16:11:30,146 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:11:30,147 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:11:30,151 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:11:30,151 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:11:30,152 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:11:29" (1/1) ... [2022-11-21 16:11:30,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:11:30,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cdae3c-8298-4c1e-be3f-a7931e24ca35/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:11:30,187 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cdae3c-8298-4c1e-be3f-a7931e24ca35/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 16:11:30,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cdae3c-8298-4c1e-be3f-a7931e24ca35/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 16:11:30,227 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 16:11:30,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 16:11:30,227 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-21 16:11:30,227 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-21 16:11:30,228 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 16:11:30,228 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 16:11:30,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-21 16:11:30,230 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2022-11-21 16:11:30,231 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2022-11-21 16:11:30,231 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-21 16:11:30,231 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_join [2022-11-21 16:11:30,235 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_join [2022-11-21 16:11:30,235 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2022-11-21 16:11:30,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2022-11-21 16:11:30,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 16:11:30,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-21 16:11:30,236 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2022-11-21 16:11:30,236 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2022-11-21 16:11:30,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 16:11:30,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:11:30,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:11:30,408 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:11:30,411 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:11:33,479 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:11:33,487 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:11:33,488 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-21 16:11:33,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:11:33 BoogieIcfgContainer [2022-11-21 16:11:33,490 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:11:33,492 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 16:11:33,493 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 16:11:33,496 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 16:11:33,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 04:11:29" (1/3) ... [2022-11-21 16:11:33,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75a111a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:11:33, skipping insertion in model container [2022-11-21 16:11:33,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:11:29" (2/3) ... [2022-11-21 16:11:33,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75a111a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:11:33, skipping insertion in model container [2022-11-21 16:11:33,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:11:33" (3/3) ... [2022-11-21 16:11:33,500 INFO L112 eAbstractionObserver]: Analyzing ICFG cs_peterson.i [2022-11-21 16:11:33,519 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 16:11:33,520 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 16:11:33,572 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:11:33,579 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@71ec37f3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:11:33,580 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 16:11:33,584 INFO L276 IsEmpty]: Start isEmpty. Operand has 113 states, 72 states have (on average 1.3194444444444444) internal successors, (95), 73 states have internal predecessors, (95), 34 states have call successors, (34), 5 states have call predecessors, (34), 5 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-11-21 16:11:33,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-21 16:11:33,600 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:11:33,601 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:11:33,602 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:11:33,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:11:33,607 INFO L85 PathProgramCache]: Analyzing trace with hash 916176115, now seen corresponding path program 1 times [2022-11-21 16:11:33,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:11:33,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283122958] [2022-11-21 16:11:33,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:11:33,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:11:37,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:11:44,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-21 16:11:44,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:11:44,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-21 16:11:44,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:11:44,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 16:11:44,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:11:44,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-21 16:11:44,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:11:45,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-21 16:11:45,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:11:45,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-21 16:11:45,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:11:45,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-21 16:11:45,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:11:45,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-21 16:11:45,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:11:45,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-21 16:11:45,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:11:45,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-21 16:11:45,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:11:45,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-21 16:11:45,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:11:45,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-21 16:11:45,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:11:45,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-21 16:11:45,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:11:45,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-21 16:11:45,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:11:45,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-21 16:11:45,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:11:45,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-21 16:11:45,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:11:45,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-21 16:11:45,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:11:45,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-21 16:11:45,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:11:45,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-21 16:11:45,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:11:45,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-21 16:11:45,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:11:45,121 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-11-21 16:11:45,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:11:45,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283122958] [2022-11-21 16:11:45,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283122958] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:11:45,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:11:45,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:11:45,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626209160] [2022-11-21 16:11:45,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:11:45,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:11:45,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:11:45,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:11:45,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:11:45,185 INFO L87 Difference]: Start difference. First operand has 113 states, 72 states have (on average 1.3194444444444444) internal successors, (95), 73 states have internal predecessors, (95), 34 states have call successors, (34), 5 states have call predecessors, (34), 5 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2022-11-21 16:11:45,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:11:45,317 INFO L93 Difference]: Finished difference Result 228 states and 364 transitions. [2022-11-21 16:11:45,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:11:45,321 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 132 [2022-11-21 16:11:45,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:11:45,332 INFO L225 Difference]: With dead ends: 228 [2022-11-21 16:11:45,332 INFO L226 Difference]: Without dead ends: 113 [2022-11-21 16:11:45,343 INFO L412 NwaCegarLoop]: 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 [2022-11-21 16:11:45,349 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 4 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:11:45,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 310 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:11:45,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-11-21 16:11:45,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 110. [2022-11-21 16:11:45,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 70 states have (on average 1.2571428571428571) internal successors, (88), 70 states have internal predecessors, (88), 34 states have call successors, (34), 5 states have call predecessors, (34), 5 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-11-21 16:11:45,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 156 transitions. [2022-11-21 16:11:45,480 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 156 transitions. Word has length 132 [2022-11-21 16:11:45,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:11:45,481 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 156 transitions. [2022-11-21 16:11:45,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2022-11-21 16:11:45,481 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 156 transitions. [2022-11-21 16:11:45,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-21 16:11:45,485 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:11:45,486 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:11:45,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 16:11:45,486 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:11:45,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:11:45,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1757813627, now seen corresponding path program 1 times [2022-11-21 16:11:45,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:11:45,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898632376] [2022-11-21 16:11:45,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:11:45,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:11:47,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:11:52,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-21 16:11:52,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:11:52,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-21 16:11:52,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:11:52,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 16:11:52,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:11:52,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-21 16:11:52,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:11:52,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-21 16:11:52,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:11:52,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-21 16:11:52,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:11:52,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-21 16:11:52,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:11:52,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-21 16:11:52,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:11:52,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-21 16:11:52,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:11:52,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-21 16:11:52,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:11:52,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-21 16:11:52,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:11:52,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-21 16:11:52,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:11:52,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-21 16:11:52,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:11:52,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-21 16:11:52,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:11:52,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-21 16:11:52,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:11:52,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-21 16:11:52,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:11:52,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-21 16:11:52,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:11:52,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-21 16:11:52,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:11:52,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-21 16:11:52,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:11:52,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-21 16:11:52,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:11:52,629 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-11-21 16:11:52,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:11:52,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898632376] [2022-11-21 16:11:52,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898632376] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:11:52,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:11:52,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:11:52,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706253018] [2022-11-21 16:11:52,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:11:52,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:11:52,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:11:52,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:11:52,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:11:52,633 INFO L87 Difference]: Start difference. First operand 110 states and 156 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2022-11-21 16:11:52,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:11:52,667 INFO L93 Difference]: Finished difference Result 219 states and 312 transitions. [2022-11-21 16:11:52,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:11:52,668 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 135 [2022-11-21 16:11:52,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:11:52,669 INFO L225 Difference]: With dead ends: 219 [2022-11-21 16:11:52,670 INFO L226 Difference]: Without dead ends: 112 [2022-11-21 16:11:52,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:11:52,672 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 1 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:11:52,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 303 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:11:52,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-11-21 16:11:52,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 111. [2022-11-21 16:11:52,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 71 states have (on average 1.2535211267605635) internal successors, (89), 71 states have internal predecessors, (89), 34 states have call successors, (34), 5 states have call predecessors, (34), 5 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-11-21 16:11:52,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 157 transitions. [2022-11-21 16:11:52,687 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 157 transitions. Word has length 135 [2022-11-21 16:11:52,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:11:52,687 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 157 transitions. [2022-11-21 16:11:52,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2022-11-21 16:11:52,688 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 157 transitions. [2022-11-21 16:11:52,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-21 16:11:52,690 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:11:52,691 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:11:52,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 16:11:52,691 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:11:52,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:11:52,692 INFO L85 PathProgramCache]: Analyzing trace with hash -615209401, now seen corresponding path program 1 times [2022-11-21 16:11:52,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:11:52,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116263066] [2022-11-21 16:11:52,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:11:52,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:11:54,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:12:02,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 16:12:02,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:12:02,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-21 16:12:02,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:12:02,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 16:12:02,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:12:02,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-21 16:12:02,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:12:02,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 16:12:02,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:12:02,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-21 16:12:02,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:12:02,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-21 16:12:02,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:12:02,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-21 16:12:02,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:12:02,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-21 16:12:02,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:12:02,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-21 16:12:02,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:12:02,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-21 16:12:02,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:12:02,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-21 16:12:02,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:12:02,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-21 16:12:02,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:12:02,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-21 16:12:02,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:12:02,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-21 16:12:02,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:12:02,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-21 16:12:02,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:12:02,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-21 16:12:02,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:12:02,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-21 16:12:02,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:12:02,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-21 16:12:02,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:12:02,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-21 16:12:02,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:12:02,592 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-11-21 16:12:02,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:12:02,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116263066] [2022-11-21 16:12:02,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116263066] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:12:02,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697571502] [2022-11-21 16:12:02,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:12:02,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:12:02,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cdae3c-8298-4c1e-be3f-a7931e24ca35/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:12:02,603 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cdae3c-8298-4c1e-be3f-a7931e24ca35/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:12:02,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cdae3c-8298-4c1e-be3f-a7931e24ca35/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 16:12:10,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:12:11,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 18469 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 16:12:11,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:12:11,161 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-11-21 16:12:11,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:12:11,282 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-11-21 16:12:11,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697571502] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:12:11,283 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:12:11,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2022-11-21 16:12:11,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659334057] [2022-11-21 16:12:11,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:12:11,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:12:11,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:12:11,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:12:11,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:12:11,291 INFO L87 Difference]: Start difference. First operand 111 states and 157 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2022-11-21 16:12:11,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:12:11,371 INFO L93 Difference]: Finished difference Result 223 states and 317 transitions. [2022-11-21 16:12:11,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:12:11,372 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 137 [2022-11-21 16:12:11,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:12:11,378 INFO L225 Difference]: With dead ends: 223 [2022-11-21 16:12:11,378 INFO L226 Difference]: Without dead ends: 115 [2022-11-21 16:12:11,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 311 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:12:11,382 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 3 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:12:11,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 453 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:12:11,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-11-21 16:12:11,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2022-11-21 16:12:11,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 75 states have (on average 1.24) internal successors, (93), 75 states have internal predecessors, (93), 34 states have call successors, (34), 5 states have call predecessors, (34), 5 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-11-21 16:12:11,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 161 transitions. [2022-11-21 16:12:11,406 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 161 transitions. Word has length 137 [2022-11-21 16:12:11,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:12:11,406 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 161 transitions. [2022-11-21 16:12:11,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2022-11-21 16:12:11,413 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 161 transitions. [2022-11-21 16:12:11,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-21 16:12:11,420 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:12:11,420 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:12:11,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cdae3c-8298-4c1e-be3f-a7931e24ca35/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 16:12:11,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cdae3c-8298-4c1e-be3f-a7931e24ca35/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:12:11,643 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:12:11,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:12:11,644 INFO L85 PathProgramCache]: Analyzing trace with hash -716828597, now seen corresponding path program 2 times [2022-11-21 16:12:11,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:12:11,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945877027] [2022-11-21 16:12:11,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:12:11,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:12:15,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:12:23,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-21 16:12:23,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:12:23,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 16:12:23,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:12:23,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-21 16:12:23,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:12:23,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-21 16:12:23,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:12:23,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-21 16:12:23,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:12:23,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-21 16:12:23,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:12:23,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-21 16:12:23,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:12:23,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-21 16:12:23,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:12:23,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-21 16:12:23,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:12:23,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-21 16:12:23,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:12:23,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-21 16:12:23,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:12:23,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-21 16:12:23,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:12:24,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-21 16:12:24,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:12:24,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-21 16:12:24,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:12:24,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-21 16:12:24,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:12:24,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-21 16:12:24,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:12:24,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-21 16:12:24,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:12:24,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-21 16:12:24,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:12:24,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-21 16:12:24,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:12:24,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-11-21 16:12:24,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:12:24,034 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 769 trivial. 0 not checked. [2022-11-21 16:12:24,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:12:24,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945877027] [2022-11-21 16:12:24,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945877027] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:12:24,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097548024] [2022-11-21 16:12:24,038 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 16:12:24,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:12:24,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cdae3c-8298-4c1e-be3f-a7931e24ca35/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:12:24,040 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cdae3c-8298-4c1e-be3f-a7931e24ca35/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:12:24,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cdae3c-8298-4c1e-be3f-a7931e24ca35/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 16:13:02,504 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-21 16:13:02,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:13:02,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 18077 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-21 16:13:02,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:13:03,042 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2022-11-21 16:13:03,043 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:13:03,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097548024] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:13:03,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:13:03,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-11-21 16:13:03,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252510581] [2022-11-21 16:13:03,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:13:03,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:13:03,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:13:03,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:13:03,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:13:03,045 INFO L87 Difference]: Start difference. First operand 115 states and 161 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2022-11-21 16:13:03,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:13:03,081 INFO L93 Difference]: Finished difference Result 215 states and 308 transitions. [2022-11-21 16:13:03,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:13:03,082 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 141 [2022-11-21 16:13:03,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:13:03,085 INFO L225 Difference]: With dead ends: 215 [2022-11-21 16:13:03,085 INFO L226 Difference]: Without dead ends: 169 [2022-11-21 16:13:03,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:13:03,087 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 74 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:13:03,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 541 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:13:03,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-11-21 16:13:03,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2022-11-21 16:13:03,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 111 states have (on average 1.2792792792792793) internal successors, (142), 111 states have internal predecessors, (142), 47 states have call successors, (47), 10 states have call predecessors, (47), 10 states have return successors, (51), 47 states have call predecessors, (51), 47 states have call successors, (51) [2022-11-21 16:13:03,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 240 transitions. [2022-11-21 16:13:03,106 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 240 transitions. Word has length 141 [2022-11-21 16:13:03,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:13:03,106 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 240 transitions. [2022-11-21 16:13:03,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2022-11-21 16:13:03,107 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 240 transitions. [2022-11-21 16:13:03,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-11-21 16:13:03,110 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:13:03,111 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:13:03,182 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cdae3c-8298-4c1e-be3f-a7931e24ca35/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-21 16:13:03,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cdae3c-8298-4c1e-be3f-a7931e24ca35/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:13:03,327 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:13:03,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:13:03,327 INFO L85 PathProgramCache]: Analyzing trace with hash 455499927, now seen corresponding path program 1 times [2022-11-21 16:13:03,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:13:03,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940900365] [2022-11-21 16:13:03,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:13:03,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:13:06,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:13:15,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 16:13:15,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:13:16,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:13:16,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:13:16,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:13:16,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:13:16,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 16:13:16,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:13:16,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 16:13:16,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:13:16,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:13:16,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:13:16,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-21 16:13:16,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:13:16,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-21 16:13:16,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:13:16,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:13:16,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:13:16,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-21 16:13:16,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:13:16,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-21 16:13:16,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:13:16,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:13:16,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:13:16,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-21 16:13:16,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:13:16,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-21 16:13:16,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:13:16,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-21 16:13:16,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:13:16,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-21 16:13:16,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:13:16,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-21 16:13:16,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:13:16,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-21 16:13:16,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:13:16,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-21 16:13:16,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:13:16,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-21 16:13:16,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:13:16,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-11-21 16:13:16,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:13:16,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-21 16:13:16,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:13:16,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-11-21 16:13:16,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:13:16,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-11-21 16:13:16,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:13:16,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-11-21 16:13:16,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:13:16,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-11-21 16:13:16,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:13:16,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-11-21 16:13:16,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:13:16,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-11-21 16:13:16,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:13:16,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-11-21 16:13:16,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:13:16,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-11-21 16:13:16,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:13:16,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-11-21 16:13:16,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:13:16,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-11-21 16:13:16,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:13:16,235 INFO L134 CoverageAnalysis]: Checked inductivity of 1148 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1147 trivial. 0 not checked. [2022-11-21 16:13:16,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:13:16,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940900365] [2022-11-21 16:13:16,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940900365] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:13:16,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741971111] [2022-11-21 16:13:16,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:13:16,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:13:16,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cdae3c-8298-4c1e-be3f-a7931e24ca35/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:13:16,238 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cdae3c-8298-4c1e-be3f-a7931e24ca35/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:13:16,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cdae3c-8298-4c1e-be3f-a7931e24ca35/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 16:13:25,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:13:25,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 18926 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 16:13:25,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:13:25,813 INFO L134 CoverageAnalysis]: Checked inductivity of 1148 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1147 trivial. 0 not checked. [2022-11-21 16:13:25,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:13:25,999 INFO L134 CoverageAnalysis]: Checked inductivity of 1148 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1147 trivial. 0 not checked. [2022-11-21 16:13:25,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741971111] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:13:25,999 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:13:26,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 10 [2022-11-21 16:13:26,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434974439] [2022-11-21 16:13:26,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:13:26,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:13:26,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:13:26,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:13:26,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:13:26,002 INFO L87 Difference]: Start difference. First operand 169 states and 240 transitions. Second operand has 10 states, 10 states have (on average 10.0) internal successors, (100), 6 states have internal predecessors, (100), 2 states have call successors, (66), 6 states have call predecessors, (66), 2 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) [2022-11-21 16:13:28,165 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:13:30,180 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:13:32,188 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:13:33,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:13:33,116 INFO L93 Difference]: Finished difference Result 354 states and 502 transitions. [2022-11-21 16:13:33,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 16:13:33,116 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.0) internal successors, (100), 6 states have internal predecessors, (100), 2 states have call successors, (66), 6 states have call predecessors, (66), 2 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) Word has length 210 [2022-11-21 16:13:33,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:13:33,119 INFO L225 Difference]: With dead ends: 354 [2022-11-21 16:13:33,119 INFO L226 Difference]: Without dead ends: 197 [2022-11-21 16:13:33,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 478 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-11-21 16:13:33,121 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 44 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 37 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:13:33,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 561 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 500 Invalid, 3 Unknown, 0 Unchecked, 7.0s Time] [2022-11-21 16:13:33,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-11-21 16:13:33,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 192. [2022-11-21 16:13:33,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 132 states have (on average 1.25) internal successors, (165), 134 states have internal predecessors, (165), 47 states have call successors, (47), 10 states have call predecessors, (47), 12 states have return successors, (55), 47 states have call predecessors, (55), 47 states have call successors, (55) [2022-11-21 16:13:33,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 267 transitions. [2022-11-21 16:13:33,144 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 267 transitions. Word has length 210 [2022-11-21 16:13:33,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:13:33,144 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 267 transitions. [2022-11-21 16:13:33,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.0) internal successors, (100), 6 states have internal predecessors, (100), 2 states have call successors, (66), 6 states have call predecessors, (66), 2 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) [2022-11-21 16:13:33,145 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 267 transitions. [2022-11-21 16:13:33,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-11-21 16:13:33,148 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:13:33,149 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 9, 9, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:13:33,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cdae3c-8298-4c1e-be3f-a7931e24ca35/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-21 16:13:33,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cdae3c-8298-4c1e-be3f-a7931e24ca35/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:13:33,368 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:13:33,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:13:33,369 INFO L85 PathProgramCache]: Analyzing trace with hash 774475927, now seen corresponding path program 2 times [2022-11-21 16:13:33,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:13:33,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375996418] [2022-11-21 16:13:33,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:13:33,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:13:46,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:14:07,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-21 16:14:07,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:14:07,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:14:07,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:14:07,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:14:07,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:14:07,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 16:14:07,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:14:08,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 16:14:08,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:14:08,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:14:08,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:14:08,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-21 16:14:08,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:14:08,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-21 16:14:08,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:14:08,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:14:08,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:14:08,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-21 16:14:08,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:14:08,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-21 16:14:08,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:14:08,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:14:08,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:14:08,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-21 16:14:08,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:14:08,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-21 16:14:08,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:14:08,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-21 16:14:08,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:14:08,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-21 16:14:08,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:14:08,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-21 16:14:08,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:14:08,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-11-21 16:14:08,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:14:08,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-21 16:14:08,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:14:08,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-11-21 16:14:08,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:14:08,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-11-21 16:14:08,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:14:08,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-11-21 16:14:08,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:14:08,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-11-21 16:14:08,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:14:08,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-11-21 16:14:08,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:14:08,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-11-21 16:14:08,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:14:08,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-11-21 16:14:08,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:14:08,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-11-21 16:14:08,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:14:08,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-11-21 16:14:08,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:14:08,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-11-21 16:14:08,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:14:08,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-11-21 16:14:08,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:14:08,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-11-21 16:14:08,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:14:08,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-11-21 16:14:08,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:14:08,246 INFO L134 CoverageAnalysis]: Checked inductivity of 1249 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1246 trivial. 0 not checked. [2022-11-21 16:14:08,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:14:08,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375996418] [2022-11-21 16:14:08,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375996418] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:14:08,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531789324] [2022-11-21 16:14:08,247 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 16:14:08,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:14:08,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cdae3c-8298-4c1e-be3f-a7931e24ca35/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:14:08,248 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cdae3c-8298-4c1e-be3f-a7931e24ca35/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:14:08,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cdae3c-8298-4c1e-be3f-a7931e24ca35/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 16:14:53,272 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-21 16:14:53,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:14:53,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 18163 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-21 16:14:53,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:14:53,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1249 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1249 trivial. 0 not checked. [2022-11-21 16:14:53,480 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:14:53,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531789324] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:14:53,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:14:53,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2022-11-21 16:14:53,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668685165] [2022-11-21 16:14:53,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:14:53,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:14:53,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:14:53,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:14:53,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-11-21 16:14:53,485 INFO L87 Difference]: Start difference. First operand 192 states and 267 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2022-11-21 16:14:53,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:14:53,519 INFO L93 Difference]: Finished difference Result 344 states and 482 transitions. [2022-11-21 16:14:53,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:14:53,520 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) Word has length 228 [2022-11-21 16:14:53,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:14:53,523 INFO L225 Difference]: With dead ends: 344 [2022-11-21 16:14:53,523 INFO L226 Difference]: Without dead ends: 192 [2022-11-21 16:14:53,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-11-21 16:14:53,527 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 0 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:14:53,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 304 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:14:53,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-11-21 16:14:53,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2022-11-21 16:14:53,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 132 states have (on average 1.2424242424242424) internal successors, (164), 134 states have internal predecessors, (164), 47 states have call successors, (47), 10 states have call predecessors, (47), 12 states have return successors, (55), 47 states have call predecessors, (55), 47 states have call successors, (55) [2022-11-21 16:14:53,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 266 transitions. [2022-11-21 16:14:53,569 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 266 transitions. Word has length 228 [2022-11-21 16:14:53,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:14:53,570 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 266 transitions. [2022-11-21 16:14:53,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2022-11-21 16:14:53,570 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 266 transitions. [2022-11-21 16:14:53,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2022-11-21 16:14:53,576 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:14:53,576 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 9, 9, 5, 5, 5, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:14:53,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cdae3c-8298-4c1e-be3f-a7931e24ca35/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-21 16:14:53,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cdae3c-8298-4c1e-be3f-a7931e24ca35/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:14:53,777 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:14:53,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:14:53,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1582995501, now seen corresponding path program 1 times [2022-11-21 16:14:53,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:14:53,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601754284] [2022-11-21 16:14:53,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:14:53,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:15:08,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:15:30,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 16:15:30,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:15:30,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:15:30,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:15:30,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:15:30,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:15:30,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-21 16:15:30,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:15:31,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:15:31,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:15:31,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:15:31,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:15:31,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 16:15:31,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:15:31,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 16:15:31,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:15:31,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:15:31,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:15:31,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-21 16:15:31,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:15:31,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-21 16:15:31,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:15:31,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:15:31,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:15:31,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-21 16:15:31,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:15:31,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-21 16:15:31,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:15:31,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:15:31,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:15:31,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-21 16:15:31,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:15:31,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-21 16:15:31,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:15:31,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-11-21 16:15:31,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:15:31,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-21 16:15:31,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:15:31,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-11-21 16:15:31,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:15:31,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-11-21 16:15:31,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:15:31,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-11-21 16:15:31,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:15:31,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-11-21 16:15:31,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:15:31,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-11-21 16:15:31,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:15:31,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-11-21 16:15:31,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:15:31,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-11-21 16:15:31,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:15:31,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-11-21 16:15:31,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:15:31,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-11-21 16:15:31,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:15:31,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-11-21 16:15:31,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:15:31,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-11-21 16:15:31,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:15:31,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-11-21 16:15:31,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:15:31,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-11-21 16:15:31,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:15:31,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-11-21 16:15:31,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:15:31,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-11-21 16:15:31,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:15:31,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-11-21 16:15:31,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:15:31,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1371 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1365 trivial. 0 not checked. [2022-11-21 16:15:31,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:15:31,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601754284] [2022-11-21 16:15:31,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601754284] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:15:31,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557112052] [2022-11-21 16:15:31,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:15:31,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:15:31,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cdae3c-8298-4c1e-be3f-a7931e24ca35/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:15:31,277 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cdae3c-8298-4c1e-be3f-a7931e24ca35/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:15:31,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cdae3c-8298-4c1e-be3f-a7931e24ca35/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-21 16:18:00,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:00,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 19424 conjuncts, 111 conjunts are in the unsatisfiable core [2022-11-21 16:18:00,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:18:01,106 INFO L321 Elim1Store]: treesize reduction 136, result has 19.5 percent of original size [2022-11-21 16:18:01,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 117 treesize of output 135 [2022-11-21 16:18:01,577 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 17 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 33 [2022-11-21 16:18:01,841 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-21 16:18:02,271 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-21 16:18:02,683 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-21 16:18:03,535 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 17 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 33 [2022-11-21 16:18:03,728 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-21 16:18:04,313 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-21 16:18:04,638 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-21 16:18:05,722 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 36 [2022-11-21 16:18:05,757 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 12 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 28 [2022-11-21 16:18:05,917 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-21 16:18:06,094 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-21 16:18:06,242 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 31 [2022-11-21 16:18:06,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-21 16:18:06,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:18:06,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:18:06,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:18:06,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:18:06,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:18:06,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:18:06,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:18:06,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:18:06,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:18:06,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:18:06,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:18:06,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:18:06,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:18:06,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:18:07,014 INFO L321 Elim1Store]: treesize reduction 315, result has 24.1 percent of original size [2022-11-21 16:18:07,015 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 120 [2022-11-21 16:18:07,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20 [2022-11-21 16:18:07,201 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-21 16:18:07,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:18:07,471 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-21 16:18:07,562 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-21 16:18:07,625 INFO L134 CoverageAnalysis]: Checked inductivity of 1371 backedges. 122 proven. 60 refuted. 0 times theorem prover too weak. 1189 trivial. 0 not checked. [2022-11-21 16:18:07,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:18:08,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557112052] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:18:08,450 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:18:08,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 21 [2022-11-21 16:18:08,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98573124] [2022-11-21 16:18:08,450 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 16:18:08,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-21 16:18:08,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:18:08,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-21 16:18:08,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=576, Unknown=2, NotChecked=0, Total=702 [2022-11-21 16:18:08,454 INFO L87 Difference]: Start difference. First operand 192 states and 266 transitions. Second operand has 21 states, 21 states have (on average 5.904761904761905) internal successors, (124), 17 states have internal predecessors, (124), 9 states have call successors, (62), 8 states have call predecessors, (62), 8 states have return successors, (62), 9 states have call predecessors, (62), 9 states have call successors, (62) [2022-11-21 16:18:10,840 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:18:14,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:18:14,173 INFO L93 Difference]: Finished difference Result 499 states and 720 transitions. [2022-11-21 16:18:14,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-21 16:18:14,174 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.904761904761905) internal successors, (124), 17 states have internal predecessors, (124), 9 states have call successors, (62), 8 states have call predecessors, (62), 8 states have return successors, (62), 9 states have call predecessors, (62), 9 states have call successors, (62) Word has length 246 [2022-11-21 16:18:14,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:18:14,178 INFO L225 Difference]: With dead ends: 499 [2022-11-21 16:18:14,178 INFO L226 Difference]: Without dead ends: 336 [2022-11-21 16:18:14,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 544 GetRequests, 503 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=344, Invalid=1460, Unknown=2, NotChecked=0, Total=1806 [2022-11-21 16:18:14,182 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 322 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 1382 mSolverCounterSat, 215 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 1598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 1382 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-21 16:18:14,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 727 Invalid, 1598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 1382 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2022-11-21 16:18:14,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2022-11-21 16:18:14,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 321. [2022-11-21 16:18:14,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 213 states have (on average 1.2629107981220657) internal successors, (269), 218 states have internal predecessors, (269), 79 states have call successors, (79), 22 states have call predecessors, (79), 28 states have return successors, (108), 80 states have call predecessors, (108), 79 states have call successors, (108) [2022-11-21 16:18:14,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 456 transitions. [2022-11-21 16:18:14,257 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 456 transitions. Word has length 246 [2022-11-21 16:18:14,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:18:14,257 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 456 transitions. [2022-11-21 16:18:14,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.904761904761905) internal successors, (124), 17 states have internal predecessors, (124), 9 states have call successors, (62), 8 states have call predecessors, (62), 8 states have return successors, (62), 9 states have call predecessors, (62), 9 states have call successors, (62) [2022-11-21 16:18:14,258 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 456 transitions. [2022-11-21 16:18:14,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2022-11-21 16:18:14,265 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:18:14,266 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 9, 9, 5, 5, 5, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:18:14,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cdae3c-8298-4c1e-be3f-a7931e24ca35/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-21 16:18:14,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cdae3c-8298-4c1e-be3f-a7931e24ca35/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-21 16:18:14,491 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:18:14,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:18:14,492 INFO L85 PathProgramCache]: Analyzing trace with hash 631443262, now seen corresponding path program 1 times [2022-11-21 16:18:14,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:18:14,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637596223] [2022-11-21 16:18:14,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:18:14,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:18:25,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:59,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-21 16:18:59,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:00,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:19:00,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:00,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:19:00,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:00,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-21 16:19:00,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:00,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:19:00,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:00,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:19:00,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:00,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 16:19:00,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:00,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 16:19:00,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:00,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:19:00,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:00,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-21 16:19:00,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:00,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-21 16:19:00,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:00,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:19:00,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:00,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-21 16:19:00,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:00,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-21 16:19:00,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:00,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:19:00,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:00,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-21 16:19:00,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:00,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-21 16:19:00,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:00,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-11-21 16:19:00,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:00,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-21 16:19:00,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:00,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-11-21 16:19:00,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:00,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-11-21 16:19:00,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:00,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-11-21 16:19:00,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:00,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-11-21 16:19:00,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:00,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-11-21 16:19:00,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:00,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-11-21 16:19:00,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:00,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-11-21 16:19:00,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:00,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-11-21 16:19:00,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:00,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-11-21 16:19:00,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:00,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-11-21 16:19:00,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:00,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-11-21 16:19:00,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:00,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-11-21 16:19:00,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:00,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-11-21 16:19:00,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:00,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-11-21 16:19:00,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:00,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-11-21 16:19:00,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:00,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-11-21 16:19:00,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:00,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1371 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2022-11-21 16:19:00,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:19:00,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637596223] [2022-11-21 16:19:00,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637596223] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:19:00,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615827587] [2022-11-21 16:19:00,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:19:00,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:19:00,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cdae3c-8298-4c1e-be3f-a7931e24ca35/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:19:00,646 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cdae3c-8298-4c1e-be3f-a7931e24ca35/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:19:00,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cdae3c-8298-4c1e-be3f-a7931e24ca35/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-21 16:19:14,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:14,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 19497 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-21 16:19:14,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:19:14,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1371 backedges. 454 proven. 5 refuted. 0 times theorem prover too weak. 912 trivial. 0 not checked. [2022-11-21 16:19:14,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:19:15,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1371 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1364 trivial. 0 not checked. [2022-11-21 16:19:15,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615827587] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:19:15,637 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:19:15,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 23 [2022-11-21 16:19:15,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301787497] [2022-11-21 16:19:15,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:19:15,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-21 16:19:15,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:19:15,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-21 16:19:15,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2022-11-21 16:19:15,640 INFO L87 Difference]: Start difference. First operand 321 states and 456 transitions. Second operand has 23 states, 23 states have (on average 5.260869565217392) internal successors, (121), 19 states have internal predecessors, (121), 13 states have call successors, (69), 10 states have call predecessors, (69), 13 states have return successors, (67), 13 states have call predecessors, (67), 13 states have call successors, (67) [2022-11-21 16:19:17,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:19:19,702 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:19:21,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:19:23,723 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:19:25,747 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-21 16:19:29,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:19:29,354 INFO L93 Difference]: Finished difference Result 754 states and 1097 transitions. [2022-11-21 16:19:29,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-21 16:19:29,355 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.260869565217392) internal successors, (121), 19 states have internal predecessors, (121), 13 states have call successors, (69), 10 states have call predecessors, (69), 13 states have return successors, (67), 13 states have call predecessors, (67), 13 states have call successors, (67) Word has length 246 [2022-11-21 16:19:29,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:19:29,359 INFO L225 Difference]: With dead ends: 754 [2022-11-21 16:19:29,360 INFO L226 Difference]: Without dead ends: 486 [2022-11-21 16:19:29,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 589 GetRequests, 552 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=287, Invalid=1119, Unknown=0, NotChecked=0, Total=1406 [2022-11-21 16:19:29,363 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 509 mSDsluCounter, 1063 mSDsCounter, 0 mSdLazyCounter, 1440 mSolverCounterSat, 446 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 539 SdHoareTripleChecker+Valid, 1298 SdHoareTripleChecker+Invalid, 1891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 446 IncrementalHoareTripleChecker+Valid, 1440 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2022-11-21 16:19:29,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [539 Valid, 1298 Invalid, 1891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [446 Valid, 1440 Invalid, 5 Unknown, 0 Unchecked, 12.8s Time] [2022-11-21 16:19:29,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2022-11-21 16:19:29,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 469. [2022-11-21 16:19:29,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 309 states have (on average 1.2394822006472492) internal successors, (383), 318 states have internal predecessors, (383), 116 states have call successors, (116), 34 states have call predecessors, (116), 43 states have return successors, (159), 116 states have call predecessors, (159), 116 states have call successors, (159) [2022-11-21 16:19:29,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 658 transitions. [2022-11-21 16:19:29,433 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 658 transitions. Word has length 246 [2022-11-21 16:19:29,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:19:29,434 INFO L495 AbstractCegarLoop]: Abstraction has 469 states and 658 transitions. [2022-11-21 16:19:29,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.260869565217392) internal successors, (121), 19 states have internal predecessors, (121), 13 states have call successors, (69), 10 states have call predecessors, (69), 13 states have return successors, (67), 13 states have call predecessors, (67), 13 states have call successors, (67) [2022-11-21 16:19:29,435 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 658 transitions. [2022-11-21 16:19:29,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2022-11-21 16:19:29,441 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:19:29,441 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 9, 9, 5, 5, 5, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:19:29,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cdae3c-8298-4c1e-be3f-a7931e24ca35/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-21 16:19:29,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cdae3c-8298-4c1e-be3f-a7931e24ca35/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-21 16:19:29,663 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:19:29,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:19:29,663 INFO L85 PathProgramCache]: Analyzing trace with hash 916579165, now seen corresponding path program 1 times [2022-11-21 16:19:29,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:19:29,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714194783] [2022-11-21 16:19:29,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:19:29,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms