./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/indp5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad91f26-f15b-4f46-93b4-7fdf576d2e56/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad91f26-f15b-4f46-93b4-7fdf576d2e56/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad91f26-f15b-4f46-93b4-7fdf576d2e56/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad91f26-f15b-4f46-93b4-7fdf576d2e56/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/indp5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad91f26-f15b-4f46-93b4-7fdf576d2e56/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad91f26-f15b-4f46-93b4-7fdf576d2e56/bin/uautomizer-J5u9QxTXDZ --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 74cd32c72cd70d8592a00c1c607545b16193fd55a0cff14185e764bbc115500b --- 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-dbf71c6-m [2022-10-17 10:22:51,129 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:22:51,136 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:22:51,178 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:22:51,178 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:22:51,180 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:22:51,182 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:22:51,185 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:22:51,187 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:22:51,189 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:22:51,190 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:22:51,192 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:22:51,192 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:22:51,194 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:22:51,196 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:22:51,197 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:22:51,199 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:22:51,200 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:22:51,203 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:22:51,206 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:22:51,208 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:22:51,210 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:22:51,212 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:22:51,213 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:22:51,219 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:22:51,220 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:22:51,220 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:22:51,222 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:22:51,222 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:22:51,224 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:22:51,225 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:22:51,226 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:22:51,227 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:22:51,228 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:22:51,230 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:22:51,230 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:22:51,231 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:22:51,232 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:22:51,232 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:22:51,234 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:22:51,235 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:22:51,236 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad91f26-f15b-4f46-93b4-7fdf576d2e56/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:22:51,280 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:22:51,281 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:22:51,281 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:22:51,281 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:22:51,282 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:22:51,282 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:22:51,283 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:22:51,284 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:22:51,284 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:22:51,284 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:22:51,284 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:22:51,285 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:22:51,285 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:22:51,285 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:22:51,286 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:22:51,286 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:22:51,286 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:22:51,286 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:22:51,287 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:22:51,287 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:22:51,287 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:22:51,288 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:22:51,288 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:22:51,288 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:22:51,289 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:22:51,289 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:22:51,289 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:22:51,290 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:22:51,290 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:22:51,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:22:51,290 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:22:51,291 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:22:51,291 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:22:51,291 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_aad91f26-f15b-4f46-93b4-7fdf576d2e56/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad91f26-f15b-4f46-93b4-7fdf576d2e56/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 74cd32c72cd70d8592a00c1c607545b16193fd55a0cff14185e764bbc115500b [2022-10-17 10:22:51,575 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:22:51,600 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:22:51,603 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:22:51,605 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:22:51,606 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:22:51,607 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad91f26-f15b-4f46-93b4-7fdf576d2e56/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/array-fpi/indp5.c [2022-10-17 10:22:51,684 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad91f26-f15b-4f46-93b4-7fdf576d2e56/bin/uautomizer-J5u9QxTXDZ/data/a8d903117/75e1d575ea5e49b6b682e958d9fb4d97/FLAGde66f4632 [2022-10-17 10:22:52,283 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:22:52,286 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad91f26-f15b-4f46-93b4-7fdf576d2e56/sv-benchmarks/c/array-fpi/indp5.c [2022-10-17 10:22:52,295 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad91f26-f15b-4f46-93b4-7fdf576d2e56/bin/uautomizer-J5u9QxTXDZ/data/a8d903117/75e1d575ea5e49b6b682e958d9fb4d97/FLAGde66f4632 [2022-10-17 10:22:52,609 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad91f26-f15b-4f46-93b4-7fdf576d2e56/bin/uautomizer-J5u9QxTXDZ/data/a8d903117/75e1d575ea5e49b6b682e958d9fb4d97 [2022-10-17 10:22:52,612 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:22:52,629 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:22:52,636 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:22:52,636 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:22:52,640 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:22:52,642 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:22:52" (1/1) ... [2022-10-17 10:22:52,644 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4680f8c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:22:52, skipping insertion in model container [2022-10-17 10:22:52,644 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:22:52" (1/1) ... [2022-10-17 10:22:52,654 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:22:52,683 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:22:52,895 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad91f26-f15b-4f46-93b4-7fdf576d2e56/sv-benchmarks/c/array-fpi/indp5.c[588,601] [2022-10-17 10:22:52,927 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:22:52,953 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:22:52,975 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad91f26-f15b-4f46-93b4-7fdf576d2e56/sv-benchmarks/c/array-fpi/indp5.c[588,601] [2022-10-17 10:22:53,001 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:22:53,026 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:22:53,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:22:53 WrapperNode [2022-10-17 10:22:53,027 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:22:53,028 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:22:53,028 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:22:53,028 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:22:53,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:22:53" (1/1) ... [2022-10-17 10:22:53,046 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:22:53" (1/1) ... [2022-10-17 10:22:53,089 INFO L138 Inliner]: procedures = 17, calls = 25, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 96 [2022-10-17 10:22:53,091 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:22:53,092 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:22:53,092 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:22:53,092 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:22:53,104 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:22:53" (1/1) ... [2022-10-17 10:22:53,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:22:53" (1/1) ... [2022-10-17 10:22:53,110 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:22:53" (1/1) ... [2022-10-17 10:22:53,111 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:22:53" (1/1) ... [2022-10-17 10:22:53,129 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:22:53" (1/1) ... [2022-10-17 10:22:53,137 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:22:53" (1/1) ... [2022-10-17 10:22:53,150 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:22:53" (1/1) ... [2022-10-17 10:22:53,152 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:22:53" (1/1) ... [2022-10-17 10:22:53,155 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:22:53,159 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:22:53,159 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:22:53,159 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:22:53,161 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:22:53" (1/1) ... [2022-10-17 10:22:53,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:22:53,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad91f26-f15b-4f46-93b4-7fdf576d2e56/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:22:53,199 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad91f26-f15b-4f46-93b4-7fdf576d2e56/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:22:53,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad91f26-f15b-4f46-93b4-7fdf576d2e56/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:22:53,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:22:53,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:22:53,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:22:53,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:22:53,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 10:22:53,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:22:53,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:22:53,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:22:53,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:22:53,398 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:22:53,400 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:22:53,661 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:22:53,668 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:22:53,668 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-10-17 10:22:53,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:22:53 BoogieIcfgContainer [2022-10-17 10:22:53,671 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:22:53,674 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:22:53,674 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:22:53,678 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:22:53,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:22:52" (1/3) ... [2022-10-17 10:22:53,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1626a53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:22:53, skipping insertion in model container [2022-10-17 10:22:53,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:22:53" (2/3) ... [2022-10-17 10:22:53,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1626a53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:22:53, skipping insertion in model container [2022-10-17 10:22:53,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:22:53" (3/3) ... [2022-10-17 10:22:53,682 INFO L112 eAbstractionObserver]: Analyzing ICFG indp5.c [2022-10-17 10:22:53,705 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:22:53,705 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:22:53,784 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:22:53,793 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;@4cbc9388, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:22:53,793 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:22:53,798 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 25 states have (on average 1.56) internal successors, (39), 26 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:22:53,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-10-17 10:22:53,807 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:22:53,808 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:22:53,824 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:22:53,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:22:53,831 INFO L85 PathProgramCache]: Analyzing trace with hash 118053350, now seen corresponding path program 1 times [2022-10-17 10:22:53,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:22:53,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135311686] [2022-10-17 10:22:53,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:22:53,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:22:53,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:22:54,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:22:54,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:22:54,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135311686] [2022-10-17 10:22:54,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135311686] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:22:54,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:22:54,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:22:54,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977434999] [2022-10-17 10:22:54,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:22:54,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 10:22:54,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:22:54,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 10:22:54,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:22:54,093 INFO L87 Difference]: Start difference. First operand has 27 states, 25 states have (on average 1.56) internal successors, (39), 26 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:22:54,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:22:54,113 INFO L93 Difference]: Finished difference Result 50 states and 72 transitions. [2022-10-17 10:22:54,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 10:22:54,115 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-10-17 10:22:54,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:22:54,125 INFO L225 Difference]: With dead ends: 50 [2022-10-17 10:22:54,125 INFO L226 Difference]: Without dead ends: 23 [2022-10-17 10:22:54,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:22:54,134 INFO L413 NwaCegarLoop]: 32 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, 32 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 [2022-10-17 10:22:54,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:22:54,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-10-17 10:22:54,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-10-17 10:22:54,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:22:54,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2022-10-17 10:22:54,174 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 17 [2022-10-17 10:22:54,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:22:54,175 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-10-17 10:22:54,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:22:54,176 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2022-10-17 10:22:54,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-10-17 10:22:54,177 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:22:54,177 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:22:54,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:22:54,178 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:22:54,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:22:54,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1065017552, now seen corresponding path program 1 times [2022-10-17 10:22:54,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:22:54,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163329322] [2022-10-17 10:22:54,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:22:54,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:22:54,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:22:54,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:22:54,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:22:54,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163329322] [2022-10-17 10:22:54,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163329322] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:22:54,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:22:54,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:22:54,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972245532] [2022-10-17 10:22:54,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:22:54,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:22:54,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:22:54,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:22:54,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:22:54,448 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:22:54,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:22:54,614 INFO L93 Difference]: Finished difference Result 49 states and 61 transitions. [2022-10-17 10:22:54,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:22:54,615 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-10-17 10:22:54,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:22:54,616 INFO L225 Difference]: With dead ends: 49 [2022-10-17 10:22:54,616 INFO L226 Difference]: Without dead ends: 33 [2022-10-17 10:22:54,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:22:54,619 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 33 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:22:54,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 13 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:22:54,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-10-17 10:22:54,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2022-10-17 10:22:54,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 27 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:22:54,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2022-10-17 10:22:54,631 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2022-10-17 10:22:54,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:22:54,634 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2022-10-17 10:22:54,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:22:54,639 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2022-10-17 10:22:54,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-10-17 10:22:54,640 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:22:54,641 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:22:54,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:22:54,642 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:22:54,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:22:54,646 INFO L85 PathProgramCache]: Analyzing trace with hash 524088314, now seen corresponding path program 1 times [2022-10-17 10:22:54,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:22:54,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942548288] [2022-10-17 10:22:54,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:22:54,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:22:54,724 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:22:54,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1201624737] [2022-10-17 10:22:54,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:22:54,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:22:54,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad91f26-f15b-4f46-93b4-7fdf576d2e56/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:22:54,733 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad91f26-f15b-4f46-93b4-7fdf576d2e56/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:22:54,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad91f26-f15b-4f46-93b4-7fdf576d2e56/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 10:22:54,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:22:54,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 44 conjunts are in the unsatisfiable core [2022-10-17 10:22:54,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:22:55,014 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 11 treesize of output 7 [2022-10-17 10:22:55,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:22:55,107 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 71 treesize of output 69 [2022-10-17 10:22:55,124 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 21 treesize of output 20 [2022-10-17 10:22:55,134 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-10-17 10:22:55,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:22:55,533 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 30 treesize of output 21 [2022-10-17 10:22:55,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:22:55,701 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 30 treesize of output 21 [2022-10-17 10:22:55,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:22:55,848 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 30 treesize of output 21 [2022-10-17 10:22:55,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:22:55,985 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 36 treesize of output 23 [2022-10-17 10:22:56,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:22:56,180 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 23 [2022-10-17 10:22:56,214 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:22:56,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:23:05,913 WARN L233 SmtUtils]: Spent 8.64s on a formula simplification that was a NOOP. DAG size: 45 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-10-17 10:23:05,938 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 10:23:05,950 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:23:05,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:23:05,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942548288] [2022-10-17 10:23:05,951 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:23:05,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201624737] [2022-10-17 10:23:05,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201624737] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:23:05,952 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-17 10:23:05,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 18 [2022-10-17 10:23:05,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555316074] [2022-10-17 10:23:05,952 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-17 10:23:05,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-10-17 10:23:05,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:23:05,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-10-17 10:23:05,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2022-10-17 10:23:05,956 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:11,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:23:11,026 INFO L93 Difference]: Finished difference Result 80 states and 97 transitions. [2022-10-17 10:23:11,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-10-17 10:23:11,027 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-10-17 10:23:11,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:23:11,031 INFO L225 Difference]: With dead ends: 80 [2022-10-17 10:23:11,031 INFO L226 Difference]: Without dead ends: 75 [2022-10-17 10:23:11,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 5 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=148, Invalid=502, Unknown=0, NotChecked=0, Total=650 [2022-10-17 10:23:11,034 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 52 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:23:11,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 56 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 248 Invalid, 0 Unknown, 48 Unchecked, 2.0s Time] [2022-10-17 10:23:11,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-10-17 10:23:11,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 61. [2022-10-17 10:23:11,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.25) internal successors, (75), 60 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:11,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 75 transitions. [2022-10-17 10:23:11,057 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 75 transitions. Word has length 27 [2022-10-17 10:23:11,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:23:11,058 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 75 transitions. [2022-10-17 10:23:11,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:11,058 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 75 transitions. [2022-10-17 10:23:11,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-10-17 10:23:11,060 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:23:11,060 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:23:11,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad91f26-f15b-4f46-93b4-7fdf576d2e56/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 10:23:11,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad91f26-f15b-4f46-93b4-7fdf576d2e56/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:23:11,289 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:23:11,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:23:11,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1190930620, now seen corresponding path program 2 times [2022-10-17 10:23:11,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:23:11,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952856758] [2022-10-17 10:23:11,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:23:11,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:23:11,331 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:23:11,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1044696250] [2022-10-17 10:23:11,331 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-17 10:23:11,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:23:11,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad91f26-f15b-4f46-93b4-7fdf576d2e56/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:23:11,346 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad91f26-f15b-4f46-93b4-7fdf576d2e56/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:23:11,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad91f26-f15b-4f46-93b4-7fdf576d2e56/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-17 10:23:11,438 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-17 10:23:11,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:23:11,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-17 10:23:11,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:23:11,529 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-17 10:23:11,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:23:11,591 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-17 10:23:11,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:23:11,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952856758] [2022-10-17 10:23:11,592 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:23:11,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044696250] [2022-10-17 10:23:11,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1044696250] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:23:11,596 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-17 10:23:11,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-10-17 10:23:11,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272335684] [2022-10-17 10:23:11,597 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-17 10:23:11,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-17 10:23:11,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:23:11,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-17 10:23:11,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:23:11,600 INFO L87 Difference]: Start difference. First operand 61 states and 75 transitions. Second operand has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:11,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:23:11,881 INFO L93 Difference]: Finished difference Result 126 states and 150 transitions. [2022-10-17 10:23:11,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:23:11,882 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-10-17 10:23:11,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:23:11,883 INFO L225 Difference]: With dead ends: 126 [2022-10-17 10:23:11,883 INFO L226 Difference]: Without dead ends: 65 [2022-10-17 10:23:11,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 49 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-10-17 10:23:11,885 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 74 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:23:11,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 33 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 10:23:11,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-10-17 10:23:11,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 48. [2022-10-17 10:23:11,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.1702127659574468) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:11,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2022-10-17 10:23:11,900 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 29 [2022-10-17 10:23:11,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:23:11,900 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2022-10-17 10:23:11,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:11,901 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2022-10-17 10:23:11,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-10-17 10:23:11,902 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:23:11,902 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:23:11,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad91f26-f15b-4f46-93b4-7fdf576d2e56/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-17 10:23:12,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad91f26-f15b-4f46-93b4-7fdf576d2e56/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:23:12,129 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:23:12,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:23:12,129 INFO L85 PathProgramCache]: Analyzing trace with hash 264308668, now seen corresponding path program 3 times [2022-10-17 10:23:12,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:23:12,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682599046] [2022-10-17 10:23:12,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:23:12,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:23:12,160 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:23:12,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [358672994] [2022-10-17 10:23:12,161 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-17 10:23:12,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:23:12,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad91f26-f15b-4f46-93b4-7fdf576d2e56/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:23:12,167 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad91f26-f15b-4f46-93b4-7fdf576d2e56/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:23:12,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad91f26-f15b-4f46-93b4-7fdf576d2e56/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-17 10:23:12,289 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-10-17 10:23:12,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:23:12,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-17 10:23:12,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:23:12,366 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-17 10:23:12,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:23:12,429 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-17 10:23:12,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:23:12,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682599046] [2022-10-17 10:23:12,429 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:23:12,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358672994] [2022-10-17 10:23:12,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [358672994] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:23:12,430 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-17 10:23:12,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-10-17 10:23:12,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901627943] [2022-10-17 10:23:12,431 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-17 10:23:12,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-17 10:23:12,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:23:12,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-17 10:23:12,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:23:12,433 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:12,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:23:12,642 INFO L93 Difference]: Finished difference Result 58 states and 65 transitions. [2022-10-17 10:23:12,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:23:12,643 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-10-17 10:23:12,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:23:12,643 INFO L225 Difference]: With dead ends: 58 [2022-10-17 10:23:12,643 INFO L226 Difference]: Without dead ends: 42 [2022-10-17 10:23:12,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 46 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-10-17 10:23:12,645 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 67 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:23:12,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 18 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:23:12,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-10-17 10:23:12,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 38. [2022-10-17 10:23:12,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.135135135135135) internal successors, (42), 37 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:12,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2022-10-17 10:23:12,655 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 29 [2022-10-17 10:23:12,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:23:12,655 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2022-10-17 10:23:12,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:12,655 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2022-10-17 10:23:12,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-10-17 10:23:12,657 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:23:12,657 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:23:12,703 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad91f26-f15b-4f46-93b4-7fdf576d2e56/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-17 10:23:12,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad91f26-f15b-4f46-93b4-7fdf576d2e56/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:23:12,871 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:23:12,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:23:12,871 INFO L85 PathProgramCache]: Analyzing trace with hash 982389828, now seen corresponding path program 4 times [2022-10-17 10:23:12,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:23:12,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792512898] [2022-10-17 10:23:12,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:23:12,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:23:12,893 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:23:12,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1289975105] [2022-10-17 10:23:12,893 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-17 10:23:12,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:23:12,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad91f26-f15b-4f46-93b4-7fdf576d2e56/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:23:12,912 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad91f26-f15b-4f46-93b4-7fdf576d2e56/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:23:12,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad91f26-f15b-4f46-93b4-7fdf576d2e56/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-17 10:23:13,116 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-17 10:23:13,116 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:23:13,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 75 conjunts are in the unsatisfiable core [2022-10-17 10:23:13,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:23:13,145 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 11 treesize of output 7 [2022-10-17 10:23:13,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:23:13,199 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 71 treesize of output 69 [2022-10-17 10:23:13,207 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 21 treesize of output 20 [2022-10-17 10:23:13,216 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-10-17 10:23:13,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:23:13,293 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 28 treesize of output 30 [2022-10-17 10:23:13,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:23:13,453 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 122 treesize of output 112 [2022-10-17 10:23:13,470 INFO L356 Elim1Store]: treesize reduction 82, result has 1.2 percent of original size [2022-10-17 10:23:13,470 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 101 treesize of output 156 [2022-10-17 10:23:13,548 INFO L356 Elim1Store]: treesize reduction 98, result has 11.7 percent of original size [2022-10-17 10:23:13,549 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 104 treesize of output 39 [2022-10-17 10:23:13,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:23:13,665 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-17 10:23:13,666 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 35 [2022-10-17 10:23:13,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:23:13,847 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 118 treesize of output 108 [2022-10-17 10:23:13,868 INFO L356 Elim1Store]: treesize reduction 82, result has 1.2 percent of original size [2022-10-17 10:23:13,868 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 97 treesize of output 152 [2022-10-17 10:23:13,905 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-10-17 10:23:14,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:23:14,056 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-17 10:23:14,057 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 35 [2022-10-17 10:23:14,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:23:14,227 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 118 treesize of output 108 [2022-10-17 10:23:14,250 INFO L356 Elim1Store]: treesize reduction 82, result has 1.2 percent of original size [2022-10-17 10:23:14,251 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 97 treesize of output 152 [2022-10-17 10:23:14,312 INFO L356 Elim1Store]: treesize reduction 98, result has 11.7 percent of original size [2022-10-17 10:23:14,313 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 102 treesize of output 37 [2022-10-17 10:23:14,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:23:14,448 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-17 10:23:14,448 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 35 [2022-10-17 10:23:14,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:23:14,632 INFO L356 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-10-17 10:23:14,633 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 88 treesize of output 84 [2022-10-17 10:23:14,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:23:14,785 INFO L356 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-10-17 10:23:14,786 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 92 treesize of output 84 [2022-10-17 10:23:15,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:23:15,114 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-17 10:23:15,114 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 28 [2022-10-17 10:23:15,161 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:23:15,161 INFO L328 TraceCheckSpWp]: Computing backward predicates...