./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/reducercommutativity/max10-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b 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_d2032aa1-b73e-4628-9149-0b8748a30a46/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2032aa1-b73e-4628-9149-0b8748a30a46/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2032aa1-b73e-4628-9149-0b8748a30a46/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2032aa1-b73e-4628-9149-0b8748a30a46/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/reducercommutativity/max10-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2032aa1-b73e-4628-9149-0b8748a30a46/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2032aa1-b73e-4628-9149-0b8748a30a46/bin/uautomizer-ug76WZFUDN --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 1223a7fef027dae15fda123c8ce40ec49dc779b7d5d627ded9a670697417439e --- 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-6b4ec56 [2022-11-20 12:14:38,141 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:14:38,143 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:14:38,165 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:14:38,166 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:14:38,167 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:14:38,169 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:14:38,172 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:14:38,174 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:14:38,175 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:14:38,177 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:14:38,178 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:14:38,179 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:14:38,180 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:14:38,182 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:14:38,184 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:14:38,185 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:14:38,186 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:14:38,188 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:14:38,191 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:14:38,193 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:14:38,195 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:14:38,197 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:14:38,198 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:14:38,202 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:14:38,203 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:14:38,203 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:14:38,205 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:14:38,206 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:14:38,207 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:14:38,207 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:14:38,209 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:14:38,210 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:14:38,211 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:14:38,213 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:14:38,213 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:14:38,215 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:14:38,215 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:14:38,216 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:14:38,217 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:14:38,218 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:14:38,219 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2032aa1-b73e-4628-9149-0b8748a30a46/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 12:14:38,247 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:14:38,248 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:14:38,248 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:14:38,249 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:14:38,250 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:14:38,250 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:14:38,251 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:14:38,252 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:14:38,252 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:14:38,252 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:14:38,253 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:14:38,253 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:14:38,253 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:14:38,254 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:14:38,254 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:14:38,254 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:14:38,255 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:14:38,255 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:14:38,256 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:14:38,256 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:14:38,256 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:14:38,257 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:14:38,257 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:14:38,257 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:14:38,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:14:38,258 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:14:38,259 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:14:38,259 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:14:38,259 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:14:38,260 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:14:38,260 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:14:38,260 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:14:38,261 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:14:38,261 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_d2032aa1-b73e-4628-9149-0b8748a30a46/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2032aa1-b73e-4628-9149-0b8748a30a46/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1223a7fef027dae15fda123c8ce40ec49dc779b7d5d627ded9a670697417439e [2022-11-20 12:14:38,572 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:14:38,614 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:14:38,617 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:14:38,619 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:14:38,619 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:14:38,621 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2032aa1-b73e-4628-9149-0b8748a30a46/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/reducercommutativity/max10-1.i [2022-11-20 12:14:42,339 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:14:42,605 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:14:42,606 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2032aa1-b73e-4628-9149-0b8748a30a46/sv-benchmarks/c/reducercommutativity/max10-1.i [2022-11-20 12:14:42,613 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2032aa1-b73e-4628-9149-0b8748a30a46/bin/uautomizer-ug76WZFUDN/data/3826c7606/67d6066ff97a4a6b8de78e5c2c167f32/FLAG098b6aa1b [2022-11-20 12:14:42,629 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2032aa1-b73e-4628-9149-0b8748a30a46/bin/uautomizer-ug76WZFUDN/data/3826c7606/67d6066ff97a4a6b8de78e5c2c167f32 [2022-11-20 12:14:42,633 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:14:42,635 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:14:42,637 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:14:42,637 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:14:42,641 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:14:42,642 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:14:42" (1/1) ... [2022-11-20 12:14:42,644 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4edc4aa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:14:42, skipping insertion in model container [2022-11-20 12:14:42,644 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:14:42" (1/1) ... [2022-11-20 12:14:42,654 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:14:42,672 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:14:42,870 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_d2032aa1-b73e-4628-9149-0b8748a30a46/sv-benchmarks/c/reducercommutativity/max10-1.i[1290,1303] [2022-11-20 12:14:42,881 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:14:42,891 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:14:42,927 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_d2032aa1-b73e-4628-9149-0b8748a30a46/sv-benchmarks/c/reducercommutativity/max10-1.i[1290,1303] [2022-11-20 12:14:42,928 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:14:42,945 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:14:42,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:14:42 WrapperNode [2022-11-20 12:14:42,946 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:14:42,948 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:14:42,948 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:14:42,948 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:14:42,958 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:14:42" (1/1) ... [2022-11-20 12:14:42,965 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:14:42" (1/1) ... [2022-11-20 12:14:42,988 INFO L138 Inliner]: procedures = 16, calls = 23, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 67 [2022-11-20 12:14:42,988 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:14:42,989 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:14:42,990 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:14:42,990 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:14:42,998 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:14:42" (1/1) ... [2022-11-20 12:14:42,998 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:14:42" (1/1) ... [2022-11-20 12:14:43,000 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:14:42" (1/1) ... [2022-11-20 12:14:43,001 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:14:42" (1/1) ... [2022-11-20 12:14:43,008 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:14:42" (1/1) ... [2022-11-20 12:14:43,013 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:14:42" (1/1) ... [2022-11-20 12:14:43,015 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:14:42" (1/1) ... [2022-11-20 12:14:43,016 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:14:42" (1/1) ... [2022-11-20 12:14:43,019 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:14:43,020 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:14:43,020 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:14:43,020 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:14:43,021 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:14:42" (1/1) ... [2022-11-20 12:14:43,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:14:43,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2032aa1-b73e-4628-9149-0b8748a30a46/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:14:43,062 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2032aa1-b73e-4628-9149-0b8748a30a46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:14:43,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2032aa1-b73e-4628-9149-0b8748a30a46/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:14:43,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:14:43,125 INFO L130 BoogieDeclarations]: Found specification of procedure max [2022-11-20 12:14:43,125 INFO L138 BoogieDeclarations]: Found implementation of procedure max [2022-11-20 12:14:43,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:14:43,126 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:14:43,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 12:14:43,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:14:43,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:14:43,131 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 12:14:43,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:14:43,249 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:14:43,251 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:14:43,491 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:14:43,499 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:14:43,500 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-20 12:14:43,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:14:43 BoogieIcfgContainer [2022-11-20 12:14:43,502 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:14:43,534 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:14:43,534 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:14:43,538 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:14:43,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:14:42" (1/3) ... [2022-11-20 12:14:43,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c955f04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:14:43, skipping insertion in model container [2022-11-20 12:14:43,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:14:42" (2/3) ... [2022-11-20 12:14:43,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c955f04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:14:43, skipping insertion in model container [2022-11-20 12:14:43,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:14:43" (3/3) ... [2022-11-20 12:14:43,556 INFO L112 eAbstractionObserver]: Analyzing ICFG max10-1.i [2022-11-20 12:14:43,602 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:14:43,602 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 12:14:43,670 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:14:43,678 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;@7f6e1e1f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:14:43,679 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 12:14:43,684 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 23 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 12:14:43,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-20 12:14:43,696 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:14:43,697 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:14:43,698 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:14:43,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:14:43,705 INFO L85 PathProgramCache]: Analyzing trace with hash -528134526, now seen corresponding path program 1 times [2022-11-20 12:14:43,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:14:43,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396853327] [2022-11-20 12:14:43,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:14:43,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:14:43,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:43,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 12:14:43,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:43,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 12:14:43,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:43,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-20 12:14:43,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:43,984 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 12:14:43,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:14:43,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396853327] [2022-11-20 12:14:43,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396853327] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:14:43,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:14:43,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:14:43,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953722194] [2022-11-20 12:14:43,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:14:43,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 12:14:43,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:14:44,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 12:14:44,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 12:14:44,037 INFO L87 Difference]: Start difference. First operand has 28 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 23 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 12:14:44,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:14:44,083 INFO L93 Difference]: Finished difference Result 52 states and 71 transitions. [2022-11-20 12:14:44,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 12:14:44,087 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2022-11-20 12:14:44,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:14:44,099 INFO L225 Difference]: With dead ends: 52 [2022-11-20 12:14:44,100 INFO L226 Difference]: Without dead ends: 24 [2022-11-20 12:14:44,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 12:14:44,115 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:14:44,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:14:44,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-20 12:14:44,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-11-20 12:14:44,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 12:14:44,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2022-11-20 12:14:44,167 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 28 [2022-11-20 12:14:44,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:14:44,168 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2022-11-20 12:14:44,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 12:14:44,169 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2022-11-20 12:14:44,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-20 12:14:44,171 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:14:44,171 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:14:44,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:14:44,172 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:14:44,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:14:44,174 INFO L85 PathProgramCache]: Analyzing trace with hash -321958693, now seen corresponding path program 1 times [2022-11-20 12:14:44,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:14:44,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307158543] [2022-11-20 12:14:44,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:14:44,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:14:44,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:44,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 12:14:44,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:44,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 12:14:44,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:44,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-20 12:14:44,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:44,519 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 12:14:44,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:14:44,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307158543] [2022-11-20 12:14:44,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307158543] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:14:44,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133840944] [2022-11-20 12:14:44,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:14:44,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:14:44,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2032aa1-b73e-4628-9149-0b8748a30a46/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:14:44,526 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2032aa1-b73e-4628-9149-0b8748a30a46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:14:44,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2032aa1-b73e-4628-9149-0b8748a30a46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 12:14:44,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:44,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:14:44,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:14:44,776 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 12:14:44,776 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:14:44,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133840944] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:14:44,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:14:44,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-20 12:14:44,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096276583] [2022-11-20 12:14:44,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:14:44,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:14:44,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:14:44,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:14:44,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:14:44,782 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 12:14:44,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:14:44,815 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2022-11-20 12:14:44,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:14:44,819 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2022-11-20 12:14:44,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:14:44,821 INFO L225 Difference]: With dead ends: 46 [2022-11-20 12:14:44,824 INFO L226 Difference]: Without dead ends: 26 [2022-11-20 12:14:44,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:14:44,827 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 1 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:14:44,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 52 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:14:44,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-20 12:14:44,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2022-11-20 12:14:44,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 12:14:44,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2022-11-20 12:14:44,843 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 28 [2022-11-20 12:14:44,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:14:44,844 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2022-11-20 12:14:44,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 12:14:44,844 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2022-11-20 12:14:44,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-20 12:14:44,847 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:14:44,847 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:14:44,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2032aa1-b73e-4628-9149-0b8748a30a46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 12:14:45,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2032aa1-b73e-4628-9149-0b8748a30a46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:14:45,055 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:14:45,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:14:45,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1777476163, now seen corresponding path program 1 times [2022-11-20 12:14:45,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:14:45,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149473305] [2022-11-20 12:14:45,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:14:45,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:14:45,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:45,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 12:14:45,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:45,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:14:45,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:45,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-20 12:14:45,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:45,200 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 12:14:45,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:14:45,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149473305] [2022-11-20 12:14:45,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149473305] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:14:45,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333554673] [2022-11-20 12:14:45,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:14:45,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:14:45,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2032aa1-b73e-4628-9149-0b8748a30a46/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:14:45,204 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2032aa1-b73e-4628-9149-0b8748a30a46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:14:45,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2032aa1-b73e-4628-9149-0b8748a30a46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 12:14:45,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:45,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:14:45,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:14:45,321 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 12:14:45,322 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:14:45,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333554673] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:14:45,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:14:45,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-20 12:14:45,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127170190] [2022-11-20 12:14:45,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:14:45,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:14:45,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:14:45,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:14:45,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:14:45,326 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 12:14:45,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:14:45,345 INFO L93 Difference]: Finished difference Result 48 states and 61 transitions. [2022-11-20 12:14:45,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:14:45,346 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2022-11-20 12:14:45,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:14:45,347 INFO L225 Difference]: With dead ends: 48 [2022-11-20 12:14:45,347 INFO L226 Difference]: Without dead ends: 29 [2022-11-20 12:14:45,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:14:45,349 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 4 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 50 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 [2022-11-20 12:14:45,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 50 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:14:45,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-20 12:14:45,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2022-11-20 12:14:45,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 12:14:45,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2022-11-20 12:14:45,357 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 30 [2022-11-20 12:14:45,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:14:45,358 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2022-11-20 12:14:45,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 12:14:45,358 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2022-11-20 12:14:45,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-20 12:14:45,360 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:14:45,360 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:14:45,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2032aa1-b73e-4628-9149-0b8748a30a46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:14:45,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2032aa1-b73e-4628-9149-0b8748a30a46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-20 12:14:45,569 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:14:45,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:14:45,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1540631384, now seen corresponding path program 1 times [2022-11-20 12:14:45,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:14:45,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517725788] [2022-11-20 12:14:45,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:14:45,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:14:45,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:45,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 12:14:45,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:45,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 12:14:45,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:45,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-20 12:14:45,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:45,855 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 12:14:45,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:14:45,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517725788] [2022-11-20 12:14:45,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517725788] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:14:45,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045184996] [2022-11-20 12:14:45,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:14:45,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:14:45,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2032aa1-b73e-4628-9149-0b8748a30a46/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:14:45,875 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2032aa1-b73e-4628-9149-0b8748a30a46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:14:45,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2032aa1-b73e-4628-9149-0b8748a30a46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 12:14:46,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:46,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:14:46,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:14:46,053 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 12:14:46,053 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:14:46,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045184996] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:14:46,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:14:46,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-20 12:14:46,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25217569] [2022-11-20 12:14:46,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:14:46,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:14:46,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:14:46,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:14:46,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:14:46,057 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 12:14:46,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:14:46,083 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2022-11-20 12:14:46,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:14:46,084 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 42 [2022-11-20 12:14:46,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:14:46,085 INFO L225 Difference]: With dead ends: 43 [2022-11-20 12:14:46,085 INFO L226 Difference]: Without dead ends: 28 [2022-11-20 12:14:46,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:14:46,087 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 1 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 51 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 [2022-11-20 12:14:46,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 51 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:14:46,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-20 12:14:46,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2022-11-20 12:14:46,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 12:14:46,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2022-11-20 12:14:46,095 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 42 [2022-11-20 12:14:46,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:14:46,113 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2022-11-20 12:14:46,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 12:14:46,114 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2022-11-20 12:14:46,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-20 12:14:46,115 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:14:46,117 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:14:46,152 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2032aa1-b73e-4628-9149-0b8748a30a46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 12:14:46,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2032aa1-b73e-4628-9149-0b8748a30a46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:14:46,324 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:14:46,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:14:46,325 INFO L85 PathProgramCache]: Analyzing trace with hash -180199466, now seen corresponding path program 1 times [2022-11-20 12:14:46,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:14:46,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113804944] [2022-11-20 12:14:46,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:14:46,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:14:46,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:46,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 12:14:46,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:46,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 12:14:46,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:46,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-20 12:14:46,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:46,517 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 12:14:46,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:14:46,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113804944] [2022-11-20 12:14:46,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113804944] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:14:46,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476616443] [2022-11-20 12:14:46,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:14:46,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:14:46,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2032aa1-b73e-4628-9149-0b8748a30a46/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:14:46,521 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2032aa1-b73e-4628-9149-0b8748a30a46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:14:46,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2032aa1-b73e-4628-9149-0b8748a30a46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 12:14:46,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:46,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:14:46,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:14:46,672 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-20 12:14:46,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:14:46,723 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-20 12:14:46,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476616443] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:14:46,723 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:14:46,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2022-11-20 12:14:46,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704022029] [2022-11-20 12:14:46,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:14:46,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 12:14:46,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:14:46,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 12:14:46,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:14:46,727 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-20 12:14:46,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:14:46,783 INFO L93 Difference]: Finished difference Result 62 states and 80 transitions. [2022-11-20 12:14:46,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:14:46,784 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 44 [2022-11-20 12:14:46,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:14:46,785 INFO L225 Difference]: With dead ends: 62 [2022-11-20 12:14:46,785 INFO L226 Difference]: Without dead ends: 40 [2022-11-20 12:14:46,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:14:46,787 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 15 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:14:46,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 70 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:14:46,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-11-20 12:14:46,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2022-11-20 12:14:46,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 32 states have (on average 1.15625) internal successors, (37), 32 states have internal predecessors, (37), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 12:14:46,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2022-11-20 12:14:46,795 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 44 [2022-11-20 12:14:46,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:14:46,796 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2022-11-20 12:14:46,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-20 12:14:46,796 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2022-11-20 12:14:46,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-20 12:14:46,798 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:14:46,798 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:14:46,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2032aa1-b73e-4628-9149-0b8748a30a46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 12:14:47,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2032aa1-b73e-4628-9149-0b8748a30a46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:14:47,006 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:14:47,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:14:47,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1875433, now seen corresponding path program 2 times [2022-11-20 12:14:47,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:14:47,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299660979] [2022-11-20 12:14:47,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:14:47,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:14:47,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:47,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-20 12:14:47,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:47,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-20 12:14:47,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:47,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 12:14:47,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:47,220 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-11-20 12:14:47,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:14:47,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299660979] [2022-11-20 12:14:47,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299660979] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:14:47,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523500685] [2022-11-20 12:14:47,222 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:14:47,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:14:47,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2032aa1-b73e-4628-9149-0b8748a30a46/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:14:47,224 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2032aa1-b73e-4628-9149-0b8748a30a46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:14:47,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2032aa1-b73e-4628-9149-0b8748a30a46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 12:14:47,361 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:14:47,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:14:47,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 12:14:47,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:14:47,459 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-11-20 12:14:47,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:14:47,573 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-11-20 12:14:47,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523500685] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:14:47,574 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:14:47,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2022-11-20 12:14:47,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308471319] [2022-11-20 12:14:47,575 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:14:47,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 12:14:47,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:14:47,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 12:14:47,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2022-11-20 12:14:47,577 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 12:14:47,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:14:47,656 INFO L93 Difference]: Finished difference Result 78 states and 96 transitions. [2022-11-20 12:14:47,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 12:14:47,663 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 62 [2022-11-20 12:14:47,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:14:47,664 INFO L225 Difference]: With dead ends: 78 [2022-11-20 12:14:47,665 INFO L226 Difference]: Without dead ends: 52 [2022-11-20 12:14:47,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2022-11-20 12:14:47,666 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 17 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:14:47,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 93 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:14:47,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-20 12:14:47,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2022-11-20 12:14:47,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 46 states have (on average 1.108695652173913) internal successors, (51), 46 states have internal predecessors, (51), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 12:14:47,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2022-11-20 12:14:47,684 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 62 [2022-11-20 12:14:47,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:14:47,684 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2022-11-20 12:14:47,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 12:14:47,685 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2022-11-20 12:14:47,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-20 12:14:47,686 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:14:47,686 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:14:47,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2032aa1-b73e-4628-9149-0b8748a30a46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 12:14:47,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2032aa1-b73e-4628-9149-0b8748a30a46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 12:14:47,887 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:14:47,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:14:47,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1341943393, now seen corresponding path program 3 times [2022-11-20 12:14:47,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:14:47,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086224163] [2022-11-20 12:14:47,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:14:47,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:14:47,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:48,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 12:14:48,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:48,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-20 12:14:48,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:48,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-20 12:14:48,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:48,133 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2022-11-20 12:14:48,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:14:48,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086224163] [2022-11-20 12:14:48,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086224163] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:14:48,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665398994] [2022-11-20 12:14:48,134 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 12:14:48,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:14:48,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2032aa1-b73e-4628-9149-0b8748a30a46/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:14:48,136 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2032aa1-b73e-4628-9149-0b8748a30a46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:14:48,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2032aa1-b73e-4628-9149-0b8748a30a46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 12:14:48,259 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-20 12:14:48,259 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:14:48,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:14:48,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:14:48,288 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 48 proven. 6 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2022-11-20 12:14:48,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:14:48,349 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 48 proven. 6 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2022-11-20 12:14:48,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665398994] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:14:48,350 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:14:48,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2022-11-20 12:14:48,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463094668] [2022-11-20 12:14:48,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:14:48,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:14:48,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:14:48,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:14:48,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:14:48,352 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-20 12:14:48,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:14:48,396 INFO L93 Difference]: Finished difference Result 94 states and 115 transitions. [2022-11-20 12:14:48,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:14:48,397 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 76 [2022-11-20 12:14:48,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:14:48,399 INFO L225 Difference]: With dead ends: 94 [2022-11-20 12:14:48,399 INFO L226 Difference]: Without dead ends: 67 [2022-11-20 12:14:48,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:14:48,401 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 40 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:14:48,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 58 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:14:48,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-11-20 12:14:48,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2022-11-20 12:14:48,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 62 states have (on average 1.1451612903225807) internal successors, (71), 62 states have internal predecessors, (71), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 12:14:48,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 77 transitions. [2022-11-20 12:14:48,411 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 77 transitions. Word has length 76 [2022-11-20 12:14:48,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:14:48,412 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 77 transitions. [2022-11-20 12:14:48,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-20 12:14:48,412 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 77 transitions. [2022-11-20 12:14:48,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-20 12:14:48,414 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:14:48,414 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 10, 10, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:14:48,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2032aa1-b73e-4628-9149-0b8748a30a46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 12:14:48,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2032aa1-b73e-4628-9149-0b8748a30a46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:14:48,621 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:14:48,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:14:48,622 INFO L85 PathProgramCache]: Analyzing trace with hash -28042803, now seen corresponding path program 4 times [2022-11-20 12:14:48,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:14:48,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405839588] [2022-11-20 12:14:48,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:14:48,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:14:48,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:48,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 12:14:48,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:49,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-20 12:14:49,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:49,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-20 12:14:49,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:49,104 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 0 proven. 386 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2022-11-20 12:14:49,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:14:49,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405839588] [2022-11-20 12:14:49,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405839588] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:14:49,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588617911] [2022-11-20 12:14:49,105 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 12:14:49,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:14:49,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2032aa1-b73e-4628-9149-0b8748a30a46/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:14:49,108 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2032aa1-b73e-4628-9149-0b8748a30a46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:14:49,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2032aa1-b73e-4628-9149-0b8748a30a46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 12:14:49,284 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 12:14:49,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:14:49,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 12:14:49,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:14:49,357 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 316 proven. 66 refuted. 0 times theorem prover too weak. 403 trivial. 0 not checked. [2022-11-20 12:14:49,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:14:49,498 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 0 proven. 386 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2022-11-20 12:14:49,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588617911] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:14:49,499 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:14:49,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2022-11-20 12:14:49,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918295081] [2022-11-20 12:14:49,502 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:14:49,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 12:14:49,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:14:49,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 12:14:49,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:14:49,506 INFO L87 Difference]: Start difference. First operand 67 states and 77 transitions. Second operand has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 12:14:49,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:14:49,575 INFO L93 Difference]: Finished difference Result 126 states and 155 transitions. [2022-11-20 12:14:49,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 12:14:49,576 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2022-11-20 12:14:49,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:14:49,579 INFO L225 Difference]: With dead ends: 126 [2022-11-20 12:14:49,579 INFO L226 Difference]: Without dead ends: 83 [2022-11-20 12:14:49,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 247 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:14:49,583 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 62 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:14:49,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 66 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:14:49,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-11-20 12:14:49,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2022-11-20 12:14:49,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 78 states have (on average 1.1666666666666667) internal successors, (91), 78 states have internal predecessors, (91), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 12:14:49,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 97 transitions. [2022-11-20 12:14:49,606 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 97 transitions. Word has length 124 [2022-11-20 12:14:49,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:14:49,610 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 97 transitions. [2022-11-20 12:14:49,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 12:14:49,610 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 97 transitions. [2022-11-20 12:14:49,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-20 12:14:49,617 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:14:49,617 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 10, 10, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:14:49,638 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2032aa1-b73e-4628-9149-0b8748a30a46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 12:14:49,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2032aa1-b73e-4628-9149-0b8748a30a46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:14:49,832 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:14:49,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:14:49,833 INFO L85 PathProgramCache]: Analyzing trace with hash -281100999, now seen corresponding path program 5 times [2022-11-20 12:14:49,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:14:49,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030762954] [2022-11-20 12:14:49,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:14:49,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:14:49,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:50,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 12:14:50,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:50,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-20 12:14:50,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:50,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-20 12:14:50,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:50,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1949 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1945 trivial. 0 not checked. [2022-11-20 12:14:50,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:14:50,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030762954] [2022-11-20 12:14:50,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030762954] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:14:50,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462265705] [2022-11-20 12:14:50,159 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 12:14:50,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:14:50,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2032aa1-b73e-4628-9149-0b8748a30a46/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:14:50,161 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2032aa1-b73e-4628-9149-0b8748a30a46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:14:50,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2032aa1-b73e-4628-9149-0b8748a30a46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 12:14:50,740 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2022-11-20 12:14:50,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:14:50,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:14:50,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:14:50,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1949 backedges. 850 proven. 4 refuted. 0 times theorem prover too weak. 1095 trivial. 0 not checked. [2022-11-20 12:14:50,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:14:50,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1949 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1945 trivial. 0 not checked. [2022-11-20 12:14:50,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462265705] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:14:50,839 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:14:50,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-11-20 12:14:50,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961573923] [2022-11-20 12:14:50,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:14:50,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 12:14:50,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:14:50,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 12:14:50,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:14:50,842 INFO L87 Difference]: Start difference. First operand 83 states and 97 transitions. Second operand has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 12:14:50,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:14:50,886 INFO L93 Difference]: Finished difference Result 142 states and 170 transitions. [2022-11-20 12:14:50,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:14:50,887 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 172 [2022-11-20 12:14:50,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:14:50,891 INFO L225 Difference]: With dead ends: 142 [2022-11-20 12:14:50,892 INFO L226 Difference]: Without dead ends: 91 [2022-11-20 12:14:50,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:14:50,898 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 9 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:14:50,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 51 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:14:50,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-11-20 12:14:50,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2022-11-20 12:14:50,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 86 states have (on average 1.1511627906976745) internal successors, (99), 86 states have internal predecessors, (99), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 12:14:50,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 105 transitions. [2022-11-20 12:14:50,916 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 105 transitions. Word has length 172 [2022-11-20 12:14:50,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:14:50,916 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 105 transitions. [2022-11-20 12:14:50,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 12:14:50,917 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 105 transitions. [2022-11-20 12:14:50,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-11-20 12:14:50,919 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:14:50,919 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 10, 10, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:14:50,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2032aa1-b73e-4628-9149-0b8748a30a46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 12:14:51,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2032aa1-b73e-4628-9149-0b8748a30a46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:14:51,120 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:14:51,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:14:51,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1450203185, now seen corresponding path program 6 times [2022-11-20 12:14:51,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:14:51,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325204488] [2022-11-20 12:14:51,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:14:51,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:14:51,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:51,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 12:14:51,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:51,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-20 12:14:51,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:51,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-20 12:14:51,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:51,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1945 trivial. 0 not checked. [2022-11-20 12:14:51,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:14:51,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325204488] [2022-11-20 12:14:51,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325204488] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:14:51,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857696135] [2022-11-20 12:14:51,568 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-20 12:14:51,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:14:51,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2032aa1-b73e-4628-9149-0b8748a30a46/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:14:51,572 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2032aa1-b73e-4628-9149-0b8748a30a46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:14:51,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2032aa1-b73e-4628-9149-0b8748a30a46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 12:14:52,433 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2022-11-20 12:14:52,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:14:52,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 12:14:52,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:14:52,497 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 850 proven. 36 refuted. 0 times theorem prover too weak. 1095 trivial. 0 not checked. [2022-11-20 12:14:52,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:14:52,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1945 trivial. 0 not checked. [2022-11-20 12:14:52,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857696135] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:14:52,612 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:14:52,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2022-11-20 12:14:52,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442105572] [2022-11-20 12:14:52,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:14:52,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 12:14:52,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:14:52,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 12:14:52,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:14:52,617 INFO L87 Difference]: Start difference. First operand 91 states and 105 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 12:14:52,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:14:52,659 INFO L93 Difference]: Finished difference Result 148 states and 175 transitions. [2022-11-20 12:14:52,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:14:52,660 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 180 [2022-11-20 12:14:52,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:14:52,661 INFO L225 Difference]: With dead ends: 148 [2022-11-20 12:14:52,661 INFO L226 Difference]: Without dead ends: 97 [2022-11-20 12:14:52,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 358 SyntacticMatches, 5 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:14:52,663 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 9 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:14:52,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 99 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:14:52,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-11-20 12:14:52,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2022-11-20 12:14:52,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 92 states have (on average 1.141304347826087) internal successors, (105), 92 states have internal predecessors, (105), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 12:14:52,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 111 transitions. [2022-11-20 12:14:52,671 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 111 transitions. Word has length 180 [2022-11-20 12:14:52,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:14:52,672 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 111 transitions. [2022-11-20 12:14:52,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 12:14:52,672 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 111 transitions. [2022-11-20 12:14:52,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-11-20 12:14:52,675 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:14:52,675 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 10, 10, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:14:52,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2032aa1-b73e-4628-9149-0b8748a30a46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 12:14:52,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2032aa1-b73e-4628-9149-0b8748a30a46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:14:52,890 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:14:52,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:14:52,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1435992661, now seen corresponding path program 7 times [2022-11-20 12:14:52,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:14:52,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237565453] [2022-11-20 12:14:52,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:14:52,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:14:53,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:55,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 12:14:55,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:56,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-20 12:14:56,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:57,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-11-20 12:14:57,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:57,061 INFO L134 CoverageAnalysis]: Checked inductivity of 2026 backedges. 38 proven. 1214 refuted. 0 times theorem prover too weak. 774 trivial. 0 not checked. [2022-11-20 12:14:57,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:14:57,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237565453] [2022-11-20 12:14:57,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237565453] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:14:57,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729129612] [2022-11-20 12:14:57,063 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-20 12:14:57,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:14:57,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2032aa1-b73e-4628-9149-0b8748a30a46/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:14:57,064 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2032aa1-b73e-4628-9149-0b8748a30a46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:14:57,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2032aa1-b73e-4628-9149-0b8748a30a46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 12:14:57,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:14:57,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 640 conjuncts, 169 conjunts are in the unsatisfiable core [2022-11-20 12:14:57,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:14:57,783 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-20 12:15:02,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:15:02,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:15:02,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:15:02,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:15:02,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:15:02,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:15:02,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:15:02,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:15:02,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:15:02,504 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:15:02,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 45 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 162 treesize of output 132 [2022-11-20 12:15:05,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:15:05,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:15:05,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:15:05,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:15:05,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:15:05,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:15:05,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:15:05,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:15:05,194 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:15:05,200 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:15:05,201 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 36 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 157 treesize of output 134 [2022-11-20 12:15:05,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:15:05,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:15:05,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:15:05,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:15:05,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:15:05,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:15:05,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:15:05,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:15:05,729 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:15:05,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 146 treesize of output 124 [2022-11-20 12:15:06,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:15:06,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:15:06,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:15:06,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:15:06,048 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:15:06,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:15:06,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:15:06,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:15:06,066 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:15:06,067 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 146 treesize of output 124 [2022-11-20 12:15:06,582 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:15:06,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:15:06,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:15:06,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:15:06,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:15:06,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:15:06,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:15:06,596 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:15:06,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 129 treesize of output 110 [2022-11-20 12:15:07,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:15:07,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:15:07,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:15:07,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:15:07,077 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:15:07,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:15:07,087 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:15:07,087 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 112 treesize of output 96 [2022-11-20 12:15:07,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:15:07,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:15:07,481 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:15:07,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:15:07,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:15:07,487 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:15:07,487 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 95 treesize of output 82 [2022-11-20 12:15:07,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:15:07,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:15:07,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:15:07,865 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:15:07,871 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:15:07,871 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 78 treesize of output 68 [2022-11-20 12:15:08,248 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:15:08,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:15:08,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:15:08,253 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:15:08,254 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 54 [2022-11-20 12:15:08,564 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:15:08,564 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 32 [2022-11-20 12:15:08,772 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:15:08,773 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 27 [2022-11-20 12:15:11,687 INFO L134 CoverageAnalysis]: Checked inductivity of 2026 backedges. 8 proven. 1828 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-20 12:15:11,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:16:51,263 INFO L134 CoverageAnalysis]: Checked inductivity of 2026 backedges. 592 proven. 1141 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2022-11-20 12:16:51,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729129612] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:16:51,264 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:16:51,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 84, 72] total 164 [2022-11-20 12:16:51,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111020742] [2022-11-20 12:16:51,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:16:51,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 164 states [2022-11-20 12:16:51,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:16:51,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2022-11-20 12:16:51,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1344, Invalid=25361, Unknown=27, NotChecked=0, Total=26732 [2022-11-20 12:16:51,279 INFO L87 Difference]: Start difference. First operand 97 states and 111 transitions. Second operand has 164 states, 161 states have (on average 1.813664596273292) internal successors, (292), 160 states have internal predecessors, (292), 8 states have call successors, (8), 3 states have call predecessors, (8), 7 states have return successors, (9), 6 states have call predecessors, (9), 8 states have call successors, (9) [2022-11-20 12:20:04,963 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~#x~0#1.base|))) (let ((.cse0 (select .cse1 |c_ULTIMATE.start_main_~#x~0#1.offset|))) (and (< .cse0 (+ (select .cse1 (+ |c_ULTIMATE.start_main_~#x~0#1.offset| 36)) 1)) (<= (+ .cse0 1) (select .cse1 (+ |c_ULTIMATE.start_main_~#x~0#1.offset| 4))) (= |c_ULTIMATE.start_main_~#x~0#1.offset| 0) (forall ((v_ArrVal_489 Int) (v_ArrVal_477 Int) (v_ArrVal_487 Int) (v_ArrVal_475 Int) (v_ArrVal_474 Int) (v_ArrVal_485 Int) (v_ArrVal_484 Int) (v_ArrVal_481 Int) (v_ArrVal_479 Int)) (let ((.cse2 (* |c_ULTIMATE.start_main_~i~2#1| 4))) (or (not (<= (select .cse1 (+ .cse2 |c_ULTIMATE.start_main_~#x~0#1.offset| 36)) v_ArrVal_489)) (< |c_ULTIMATE.start_main_~temp~0#1| (+ (select (store (store (store (store (store (store (store (store (store .cse1 (+ .cse2 |c_ULTIMATE.start_main_~#x~0#1.offset|) v_ArrVal_474) (+ .cse2 |c_ULTIMATE.start_main_~#x~0#1.offset| 4) v_ArrVal_475) (+ .cse2 |c_ULTIMATE.start_main_~#x~0#1.offset| 8) v_ArrVal_477) (+ .cse2 |c_ULTIMATE.start_main_~#x~0#1.offset| 12) v_ArrVal_479) (+ .cse2 16 |c_ULTIMATE.start_main_~#x~0#1.offset|) v_ArrVal_481) (+ .cse2 |c_ULTIMATE.start_main_~#x~0#1.offset| 20) v_ArrVal_484) (+ .cse2 |c_ULTIMATE.start_main_~#x~0#1.offset| 24) v_ArrVal_485) (+ .cse2 |c_ULTIMATE.start_main_~#x~0#1.offset| 28) v_ArrVal_487) (+ .cse2 32 |c_ULTIMATE.start_main_~#x~0#1.offset|) v_ArrVal_489) (+ 32 |c_ULTIMATE.start_main_~#x~0#1.offset|)) 1)))))))) is different from false [2022-11-20 12:24:36,273 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~#x~0#1.base|))) (and (forall ((v_ArrVal_489 Int) (v_ArrVal_477 Int) (v_ArrVal_487 Int) (v_ArrVal_475 Int) (v_ArrVal_485 Int) (v_ArrVal_484 Int) (v_ArrVal_481 Int) (v_ArrVal_479 Int)) (let ((.cse1 (* |c_ULTIMATE.start_main_~i~2#1| 4))) (or (not (<= (select .cse0 (+ .cse1 32 |c_ULTIMATE.start_main_~#x~0#1.offset|)) v_ArrVal_489)) (< |c_ULTIMATE.start_main_~temp~0#1| (+ (select (store (store (store (store (store (store (store (store .cse0 (+ .cse1 |c_ULTIMATE.start_main_~#x~0#1.offset|) v_ArrVal_475) (+ .cse1 |c_ULTIMATE.start_main_~#x~0#1.offset| 4) v_ArrVal_477) (+ .cse1 |c_ULTIMATE.start_main_~#x~0#1.offset| 8) v_ArrVal_479) (+ .cse1 |c_ULTIMATE.start_main_~#x~0#1.offset| 12) v_ArrVal_481) (+ .cse1 16 |c_ULTIMATE.start_main_~#x~0#1.offset|) v_ArrVal_484) (+ .cse1 |c_ULTIMATE.start_main_~#x~0#1.offset| 20) v_ArrVal_485) (+ .cse1 |c_ULTIMATE.start_main_~#x~0#1.offset| 24) v_ArrVal_487) (+ .cse1 |c_ULTIMATE.start_main_~#x~0#1.offset| 28) v_ArrVal_489) (+ 32 |c_ULTIMATE.start_main_~#x~0#1.offset|)) 1))))) (< (select .cse0 (+ |c_ULTIMATE.start_main_~#x~0#1.offset| 4)) (+ (select .cse0 (+ |c_ULTIMATE.start_main_~#x~0#1.offset| 36)) 1)) (= |c_ULTIMATE.start_main_~#x~0#1.offset| 0))) is different from false [2022-11-20 12:26:29,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:26:29,819 INFO L93 Difference]: Finished difference Result 1148 states and 1539 transitions. [2022-11-20 12:26:29,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 698 states. [2022-11-20 12:26:29,820 INFO L78 Accepts]: Start accepts. Automaton has has 164 states, 161 states have (on average 1.813664596273292) internal successors, (292), 160 states have internal predecessors, (292), 8 states have call successors, (8), 3 states have call predecessors, (8), 7 states have return successors, (9), 6 states have call predecessors, (9), 8 states have call successors, (9) Word has length 186 [2022-11-20 12:26:29,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:26:29,833 INFO L225 Difference]: With dead ends: 1148 [2022-11-20 12:26:29,835 INFO L226 Difference]: Without dead ends: 1053 [2022-11-20 12:26:29,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1046 GetRequests, 267 SyntacticMatches, 4 SemanticMatches, 775 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 233049 ImplicationChecksByTransitivity, 668.8s TimeCoverageRelationStatistics Valid=22640, Invalid=577092, Unknown=126, NotChecked=3094, Total=602952 [2022-11-20 12:26:29,877 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 1624 mSDsluCounter, 2728 mSDsCounter, 0 mSdLazyCounter, 7751 mSolverCounterSat, 677 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1631 SdHoareTripleChecker+Valid, 2764 SdHoareTripleChecker+Invalid, 31095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 677 IncrementalHoareTripleChecker+Valid, 7751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 22667 IncrementalHoareTripleChecker+Unchecked, 13.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:26:29,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1631 Valid, 2764 Invalid, 31095 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [677 Valid, 7751 Invalid, 0 Unknown, 22667 Unchecked, 13.2s Time] [2022-11-20 12:26:29,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1053 states. [2022-11-20 12:26:29,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1053 to 603. [2022-11-20 12:26:29,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 580 states have (on average 1.236206896551724) internal successors, (717), 589 states have internal predecessors, (717), 10 states have call successors, (10), 3 states have call predecessors, (10), 12 states have return successors, (68), 10 states have call predecessors, (68), 10 states have call successors, (68) [2022-11-20 12:26:29,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 795 transitions. [2022-11-20 12:26:29,996 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 795 transitions. Word has length 186 [2022-11-20 12:26:29,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:26:29,997 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 795 transitions. [2022-11-20 12:26:29,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 164 states, 161 states have (on average 1.813664596273292) internal successors, (292), 160 states have internal predecessors, (292), 8 states have call successors, (8), 3 states have call predecessors, (8), 7 states have return successors, (9), 6 states have call predecessors, (9), 8 states have call successors, (9) [2022-11-20 12:26:29,998 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 795 transitions. [2022-11-20 12:26:30,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-11-20 12:26:30,004 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:26:30,005 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 28, 10, 10, 9, 9, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:26:30,017 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2032aa1-b73e-4628-9149-0b8748a30a46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 12:26:30,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2032aa1-b73e-4628-9149-0b8748a30a46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:26:30,212 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:26:30,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:26:30,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1427363051, now seen corresponding path program 1 times [2022-11-20 12:26:30,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:26:30,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462005102] [2022-11-20 12:26:30,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:26:30,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:26:30,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:26:39,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 12:26:39,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:26:44,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-20 12:26:44,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:26:47,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-11-20 12:26:47,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:26:48,657 INFO L134 CoverageAnalysis]: Checked inductivity of 2026 backedges. 3 proven. 1987 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-20 12:26:48,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:26:48,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462005102] [2022-11-20 12:26:48,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462005102] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:26:48,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204112570] [2022-11-20 12:26:48,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:26:48,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:26:48,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2032aa1-b73e-4628-9149-0b8748a30a46/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:26:48,660 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2032aa1-b73e-4628-9149-0b8748a30a46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:26:48,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2032aa1-b73e-4628-9149-0b8748a30a46/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 12:26:48,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:26:48,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 636 conjuncts, 284 conjunts are in the unsatisfiable core [2022-11-20 12:26:48,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:26:49,177 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-20 12:27:03,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:03,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:03,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:03,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:03,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:03,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:03,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:03,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:03,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:03,866 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:27:03,866 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 45 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 204 treesize of output 148 [2022-11-20 12:27:28,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:28,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:28,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:28,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:28,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:28,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:28,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:28,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:28,220 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:27:28,226 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:27:28,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 36 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 188 treesize of output 147 [2022-11-20 12:27:29,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:29,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:29,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:29,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:29,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:29,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:29,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:29,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:29,393 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:27:29,394 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 175 treesize of output 135 [2022-11-20 12:27:30,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:30,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:30,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:30,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:30,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:30,049 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:27:30,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:30,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:30,059 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:27:30,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 175 treesize of output 135 [2022-11-20 12:27:31,319 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:27:31,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:31,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:31,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:31,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:31,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:31,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:31,333 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:27:31,333 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 158 treesize of output 121 [2022-11-20 12:27:32,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:32,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:32,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:32,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:32,400 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:27:32,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:32,404 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:27:32,405 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 141 treesize of output 107 [2022-11-20 12:27:33,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:33,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:33,428 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:27:33,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:33,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:33,438 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:27:33,438 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 124 treesize of output 93 [2022-11-20 12:27:34,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:34,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:34,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:34,426 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:27:34,429 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:27:34,429 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 107 treesize of output 79 [2022-11-20 12:27:35,350 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:27:35,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:35,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:27:35,357 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:27:35,357 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 90 treesize of output 65 [2022-11-20 12:27:36,215 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:27:36,215 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 40 [2022-11-20 12:27:36,680 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:27:36,680 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 38 [2022-11-20 12:27:42,148 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:27:42,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 50 [2022-11-20 12:27:42,899 INFO L134 CoverageAnalysis]: Checked inductivity of 2026 backedges. 1 proven. 2022 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 12:27:42,899 INFO L328 TraceCheckSpWp]: Computing backward predicates...