./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/nsqm-if.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76aa8f0d-13db-445e-bf4e-91fd574bfcc1/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76aa8f0d-13db-445e-bf4e-91fd574bfcc1/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76aa8f0d-13db-445e-bf4e-91fd574bfcc1/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76aa8f0d-13db-445e-bf4e-91fd574bfcc1/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/nsqm-if.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76aa8f0d-13db-445e-bf4e-91fd574bfcc1/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76aa8f0d-13db-445e-bf4e-91fd574bfcc1/bin/uautomizer-DrprNOufMa --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 8d7989c0f7330a23b935c06e29a235b3d1d683ab2aa8325b4804307d493787f2 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 19:45:23,197 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 19:45:23,199 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 19:45:23,221 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 19:45:23,221 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 19:45:23,222 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 19:45:23,223 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 19:45:23,225 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 19:45:23,227 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 19:45:23,227 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 19:45:23,228 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 19:45:23,229 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 19:45:23,230 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 19:45:23,231 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 19:45:23,232 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 19:45:23,233 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 19:45:23,234 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 19:45:23,234 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 19:45:23,236 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 19:45:23,238 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 19:45:23,240 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 19:45:23,241 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 19:45:23,242 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 19:45:23,242 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 19:45:23,245 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 19:45:23,246 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 19:45:23,246 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 19:45:23,247 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 19:45:23,247 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 19:45:23,248 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 19:45:23,248 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 19:45:23,249 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 19:45:23,249 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 19:45:23,250 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 19:45:23,251 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 19:45:23,251 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 19:45:23,251 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 19:45:23,251 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 19:45:23,252 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 19:45:23,252 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 19:45:23,253 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 19:45:23,254 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76aa8f0d-13db-445e-bf4e-91fd574bfcc1/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 19:45:23,271 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 19:45:23,271 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 19:45:23,271 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 19:45:23,271 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 19:45:23,272 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 19:45:23,272 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 19:45:23,272 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 19:45:23,273 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 19:45:23,273 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 19:45:23,273 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 19:45:23,273 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 19:45:23,273 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 19:45:23,273 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 19:45:23,273 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 19:45:23,273 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 19:45:23,273 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 19:45:23,274 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 19:45:23,274 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 19:45:23,274 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 19:45:23,274 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 19:45:23,274 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 19:45:23,274 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 19:45:23,274 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 19:45:23,274 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 19:45:23,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 19:45:23,275 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 19:45:23,275 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 19:45:23,275 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 19:45:23,275 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 19:45:23,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 19:45:23,275 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 19:45:23,275 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 19:45:23,275 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 19:45:23,275 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 19:45:23,276 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_76aa8f0d-13db-445e-bf4e-91fd574bfcc1/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76aa8f0d-13db-445e-bf4e-91fd574bfcc1/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d7989c0f7330a23b935c06e29a235b3d1d683ab2aa8325b4804307d493787f2 [2021-12-06 19:45:23,467 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 19:45:23,486 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 19:45:23,488 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 19:45:23,489 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 19:45:23,490 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 19:45:23,491 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76aa8f0d-13db-445e-bf4e-91fd574bfcc1/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/array-fpi/nsqm-if.c [2021-12-06 19:45:23,532 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76aa8f0d-13db-445e-bf4e-91fd574bfcc1/bin/uautomizer-DrprNOufMa/data/3aa381ace/07b8d030a45044ecb599f304683910aa/FLAGc66341122 [2021-12-06 19:45:23,916 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 19:45:23,916 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76aa8f0d-13db-445e-bf4e-91fd574bfcc1/sv-benchmarks/c/array-fpi/nsqm-if.c [2021-12-06 19:45:23,921 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76aa8f0d-13db-445e-bf4e-91fd574bfcc1/bin/uautomizer-DrprNOufMa/data/3aa381ace/07b8d030a45044ecb599f304683910aa/FLAGc66341122 [2021-12-06 19:45:23,930 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76aa8f0d-13db-445e-bf4e-91fd574bfcc1/bin/uautomizer-DrprNOufMa/data/3aa381ace/07b8d030a45044ecb599f304683910aa [2021-12-06 19:45:23,932 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 19:45:23,933 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 19:45:23,934 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 19:45:23,934 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 19:45:23,936 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 19:45:23,937 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:45:23" (1/1) ... [2021-12-06 19:45:23,937 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70bf1d5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:45:23, skipping insertion in model container [2021-12-06 19:45:23,938 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:45:23" (1/1) ... [2021-12-06 19:45:23,942 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 19:45:23,953 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 19:45:24,054 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_76aa8f0d-13db-445e-bf4e-91fd574bfcc1/sv-benchmarks/c/array-fpi/nsqm-if.c[590,603] [2021-12-06 19:45:24,071 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:45:24,079 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 19:45:24,088 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_76aa8f0d-13db-445e-bf4e-91fd574bfcc1/sv-benchmarks/c/array-fpi/nsqm-if.c[590,603] [2021-12-06 19:45:24,095 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:45:24,106 INFO L208 MainTranslator]: Completed translation [2021-12-06 19:45:24,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:45:24 WrapperNode [2021-12-06 19:45:24,106 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 19:45:24,107 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 19:45:24,107 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 19:45:24,107 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 19:45:24,114 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:45:24" (1/1) ... [2021-12-06 19:45:24,121 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:45:24" (1/1) ... [2021-12-06 19:45:24,143 INFO L137 Inliner]: procedures = 16, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 74 [2021-12-06 19:45:24,143 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 19:45:24,144 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 19:45:24,144 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 19:45:24,144 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 19:45:24,152 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:45:24" (1/1) ... [2021-12-06 19:45:24,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:45:24" (1/1) ... [2021-12-06 19:45:24,155 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:45:24" (1/1) ... [2021-12-06 19:45:24,155 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:45:24" (1/1) ... [2021-12-06 19:45:24,161 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:45:24" (1/1) ... [2021-12-06 19:45:24,165 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:45:24" (1/1) ... [2021-12-06 19:45:24,167 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:45:24" (1/1) ... [2021-12-06 19:45:24,169 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 19:45:24,170 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 19:45:24,170 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 19:45:24,170 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 19:45:24,171 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:45:24" (1/1) ... [2021-12-06 19:45:24,178 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 19:45:24,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76aa8f0d-13db-445e-bf4e-91fd574bfcc1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:45:24,201 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76aa8f0d-13db-445e-bf4e-91fd574bfcc1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 19:45:24,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76aa8f0d-13db-445e-bf4e-91fd574bfcc1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 19:45:24,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 19:45:24,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 19:45:24,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 19:45:24,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 19:45:24,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 19:45:24,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 19:45:24,241 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 19:45:24,306 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 19:45:24,308 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 19:45:24,432 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 19:45:24,436 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 19:45:24,436 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-06 19:45:24,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:45:24 BoogieIcfgContainer [2021-12-06 19:45:24,438 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 19:45:24,439 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 19:45:24,439 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 19:45:24,442 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 19:45:24,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 07:45:23" (1/3) ... [2021-12-06 19:45:24,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46a06642 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:45:24, skipping insertion in model container [2021-12-06 19:45:24,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:45:24" (2/3) ... [2021-12-06 19:45:24,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46a06642 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:45:24, skipping insertion in model container [2021-12-06 19:45:24,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:45:24" (3/3) ... [2021-12-06 19:45:24,444 INFO L111 eAbstractionObserver]: Analyzing ICFG nsqm-if.c [2021-12-06 19:45:24,448 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 19:45:24,448 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 19:45:24,483 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 19:45:24,488 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 19:45:24,489 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 19:45:24,500 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 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) [2021-12-06 19:45:24,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-06 19:45:24,506 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:45:24,506 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:45:24,507 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:45:24,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:45:24,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1670316217, now seen corresponding path program 1 times [2021-12-06 19:45:24,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:45:24,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128261632] [2021-12-06 19:45:24,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:45:24,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:45:24,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:24,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:45:24,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:45:24,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128261632] [2021-12-06 19:45:24,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128261632] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:45:24,648 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:45:24,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 19:45:24,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815495861] [2021-12-06 19:45:24,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:45:24,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 19:45:24,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:45:24,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 19:45:24,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 19:45:24,676 INFO L87 Difference]: Start difference. First operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 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) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:45:24,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:45:24,687 INFO L93 Difference]: Finished difference Result 42 states and 60 transitions. [2021-12-06 19:45:24,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 19:45:24,689 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-12-06 19:45:24,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:45:24,695 INFO L225 Difference]: With dead ends: 42 [2021-12-06 19:45:24,695 INFO L226 Difference]: Without dead ends: 19 [2021-12-06 19:45:24,697 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 19:45:24,700 INFO L933 BasicCegarLoop]: 28 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, 28 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 [2021-12-06 19:45:24,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:45:24,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-12-06 19:45:24,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-12-06 19:45:24,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:45:24,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2021-12-06 19:45:24,724 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 12 [2021-12-06 19:45:24,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:45:24,724 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2021-12-06 19:45:24,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:45:24,725 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2021-12-06 19:45:24,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-06 19:45:24,725 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:45:24,725 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:45:24,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 19:45:24,726 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:45:24,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:45:24,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1000416578, now seen corresponding path program 1 times [2021-12-06 19:45:24,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:45:24,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221414918] [2021-12-06 19:45:24,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:45:24,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:45:24,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:24,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:45:24,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:45:24,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221414918] [2021-12-06 19:45:24,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221414918] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:45:24,784 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:45:24,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 19:45:24,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453139782] [2021-12-06 19:45:24,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:45:24,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 19:45:24,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:45:24,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 19:45:24,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 19:45:24,787 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:45:24,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:45:24,863 INFO L93 Difference]: Finished difference Result 45 states and 57 transitions. [2021-12-06 19:45:24,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 19:45:24,864 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-12-06 19:45:24,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:45:24,864 INFO L225 Difference]: With dead ends: 45 [2021-12-06 19:45:24,864 INFO L226 Difference]: Without dead ends: 31 [2021-12-06 19:45:24,865 INFO L932 BasicCegarLoop]: 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 [2021-12-06 19:45:24,866 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 37 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:45:24,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 17 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:45:24,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-12-06 19:45:24,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2021-12-06 19:45:24,870 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) [2021-12-06 19:45:24,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2021-12-06 19:45:24,871 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 12 [2021-12-06 19:45:24,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:45:24,871 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2021-12-06 19:45:24,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:45:24,872 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2021-12-06 19:45:24,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-06 19:45:24,872 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:45:24,872 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:45:24,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 19:45:24,873 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:45:24,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:45:24,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1992201947, now seen corresponding path program 1 times [2021-12-06 19:45:24,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:45:24,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838093572] [2021-12-06 19:45:24,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:45:24,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:45:24,893 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 19:45:24,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1449405666] [2021-12-06 19:45:24,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:45:24,894 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:45:24,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76aa8f0d-13db-445e-bf4e-91fd574bfcc1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:45:24,895 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76aa8f0d-13db-445e-bf4e-91fd574bfcc1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:45:24,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76aa8f0d-13db-445e-bf4e-91fd574bfcc1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 19:45:24,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:24,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-06 19:45:24,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:45:25,022 INFO L388 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 13 treesize of output 9 [2021-12-06 19:45:25,100 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:45:25,101 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:45:25,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:45:25,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838093572] [2021-12-06 19:45:25,101 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 19:45:25,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449405666] [2021-12-06 19:45:25,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449405666] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:45:25,102 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:45:25,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 19:45:25,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25466393] [2021-12-06 19:45:25,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:45:25,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:45:25,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:45:25,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:45:25,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:45:25,104 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:45:25,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:45:25,169 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2021-12-06 19:45:25,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 19:45:25,169 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-12-06 19:45:25,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:45:25,170 INFO L225 Difference]: With dead ends: 40 [2021-12-06 19:45:25,170 INFO L226 Difference]: Without dead ends: 38 [2021-12-06 19:45:25,171 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:45:25,172 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 16 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:45:25,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 53 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:45:25,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-12-06 19:45:25,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 28. [2021-12-06 19:45:25,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 27 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) [2021-12-06 19:45:25,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2021-12-06 19:45:25,179 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 18 [2021-12-06 19:45:25,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:45:25,180 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2021-12-06 19:45:25,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:45:25,180 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2021-12-06 19:45:25,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-06 19:45:25,181 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:45:25,181 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:45:25,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76aa8f0d-13db-445e-bf4e-91fd574bfcc1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 19:45:25,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76aa8f0d-13db-445e-bf4e-91fd574bfcc1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:45:25,383 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:45:25,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:45:25,386 INFO L85 PathProgramCache]: Analyzing trace with hash 259417010, now seen corresponding path program 1 times [2021-12-06 19:45:25,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:45:25,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052418286] [2021-12-06 19:45:25,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:45:25,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:45:25,471 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 19:45:25,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [991942181] [2021-12-06 19:45:25,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:45:25,473 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:45:25,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76aa8f0d-13db-445e-bf4e-91fd574bfcc1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:45:25,476 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76aa8f0d-13db-445e-bf4e-91fd574bfcc1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:45:25,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76aa8f0d-13db-445e-bf4e-91fd574bfcc1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 19:45:25,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:25,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 19:45:25,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:45:25,716 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:45:25,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:45:25,754 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:45:25,755 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:45:25,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052418286] [2021-12-06 19:45:25,755 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 19:45:25,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991942181] [2021-12-06 19:45:25,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991942181] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:45:25,755 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:45:25,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-12-06 19:45:25,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706965191] [2021-12-06 19:45:25,756 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:45:25,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 19:45:25,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:45:25,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 19:45:25,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-06 19:45:25,757 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:45:25,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:45:25,848 INFO L93 Difference]: Finished difference Result 70 states and 82 transitions. [2021-12-06 19:45:25,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 19:45:25,848 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 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 21 [2021-12-06 19:45:25,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:45:25,849 INFO L225 Difference]: With dead ends: 70 [2021-12-06 19:45:25,849 INFO L226 Difference]: Without dead ends: 43 [2021-12-06 19:45:25,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-12-06 19:45:25,850 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 35 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:45:25,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 44 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:45:25,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-12-06 19:45:25,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 27. [2021-12-06 19:45:25,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:45:25,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2021-12-06 19:45:25,854 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 21 [2021-12-06 19:45:25,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:45:25,855 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2021-12-06 19:45:25,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:45:25,855 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2021-12-06 19:45:25,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-06 19:45:25,855 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:45:25,855 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:45:25,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76aa8f0d-13db-445e-bf4e-91fd574bfcc1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-06 19:45:26,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76aa8f0d-13db-445e-bf4e-91fd574bfcc1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:45:26,057 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:45:26,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:45:26,059 INFO L85 PathProgramCache]: Analyzing trace with hash 939318754, now seen corresponding path program 1 times [2021-12-06 19:45:26,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:45:26,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465810930] [2021-12-06 19:45:26,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:45:26,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:45:26,134 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 19:45:26,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1544045206] [2021-12-06 19:45:26,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:45:26,135 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:45:26,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76aa8f0d-13db-445e-bf4e-91fd574bfcc1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:45:26,138 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76aa8f0d-13db-445e-bf4e-91fd574bfcc1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:45:26,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76aa8f0d-13db-445e-bf4e-91fd574bfcc1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 19:45:26,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:26,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-06 19:45:26,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:45:26,267 INFO L388 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 13 treesize of output 9 [2021-12-06 19:45:26,305 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-12-06 19:45:26,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-12-06 19:45:26,335 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:45:26,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:45:26,538 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2021-12-06 19:45:26,565 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-06 19:45:26,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:45:26,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465810930] [2021-12-06 19:45:26,565 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 19:45:26,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544045206] [2021-12-06 19:45:26,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544045206] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:45:26,565 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:45:26,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 11 [2021-12-06 19:45:26,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444548184] [2021-12-06 19:45:26,566 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:45:26,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 19:45:26,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:45:26,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 19:45:26,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-12-06 19:45:26,567 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:45:26,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:45:26,695 INFO L93 Difference]: Finished difference Result 73 states and 86 transitions. [2021-12-06 19:45:26,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 19:45:26,696 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 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 24 [2021-12-06 19:45:26,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:45:26,696 INFO L225 Difference]: With dead ends: 73 [2021-12-06 19:45:26,697 INFO L226 Difference]: Without dead ends: 61 [2021-12-06 19:45:26,697 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-12-06 19:45:26,698 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 34 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 40 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:45:26,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 67 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 83 Invalid, 0 Unknown, 40 Unchecked, 0.1s Time] [2021-12-06 19:45:26,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-12-06 19:45:26,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 38. [2021-12-06 19:45:26,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.2162162162162162) internal successors, (45), 37 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:45:26,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2021-12-06 19:45:26,704 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 24 [2021-12-06 19:45:26,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:45:26,704 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2021-12-06 19:45:26,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:45:26,704 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2021-12-06 19:45:26,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-06 19:45:26,705 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:45:26,705 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:45:26,730 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76aa8f0d-13db-445e-bf4e-91fd574bfcc1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 19:45:26,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76aa8f0d-13db-445e-bf4e-91fd574bfcc1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:45:26,907 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:45:26,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:45:26,908 INFO L85 PathProgramCache]: Analyzing trace with hash 430403928, now seen corresponding path program 1 times [2021-12-06 19:45:26,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:45:26,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379263092] [2021-12-06 19:45:26,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:45:26,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:45:26,963 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 19:45:26,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [826628333] [2021-12-06 19:45:26,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:45:26,964 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:45:26,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76aa8f0d-13db-445e-bf4e-91fd574bfcc1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:45:26,965 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76aa8f0d-13db-445e-bf4e-91fd574bfcc1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:45:26,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76aa8f0d-13db-445e-bf4e-91fd574bfcc1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 19:45:27,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:27,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 41 conjunts are in the unsatisfiable core [2021-12-06 19:45:27,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:45:27,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-06 19:45:27,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 19:45:27,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:45:27,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 19:45:27,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 19:45:27,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:45:27,382 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-06 19:45:27,382 INFO L388 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 1 case distinctions, treesize of input 41 treesize of output 35 [2021-12-06 19:45:27,608 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:45:27,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:45:28,445 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:45:28,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:45:28,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379263092] [2021-12-06 19:45:28,446 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 19:45:28,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826628333] [2021-12-06 19:45:28,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [826628333] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:45:28,446 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:45:28,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 26 [2021-12-06 19:45:28,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594531144] [2021-12-06 19:45:28,447 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:45:28,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-06 19:45:28,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:45:28,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-06 19:45:28,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=531, Unknown=0, NotChecked=0, Total=650 [2021-12-06 19:45:28,449 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand has 26 states, 26 states have (on average 2.0384615384615383) internal successors, (53), 26 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:45:32,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:45:32,529 INFO L93 Difference]: Finished difference Result 203 states and 240 transitions. [2021-12-06 19:45:32,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-12-06 19:45:32,529 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.0384615384615383) internal successors, (53), 26 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-12-06 19:45:32,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:45:32,531 INFO L225 Difference]: With dead ends: 203 [2021-12-06 19:45:32,531 INFO L226 Difference]: Without dead ends: 172 [2021-12-06 19:45:32,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 31 SyntacticMatches, 8 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 933 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=561, Invalid=2195, Unknown=0, NotChecked=0, Total=2756 [2021-12-06 19:45:32,533 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 315 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 212 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 19:45:32,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [315 Valid, 209 Invalid, 757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 384 Invalid, 0 Unknown, 212 Unchecked, 0.9s Time] [2021-12-06 19:45:32,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-12-06 19:45:32,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 87. [2021-12-06 19:45:32,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.255813953488372) internal successors, (108), 86 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:45:32,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 108 transitions. [2021-12-06 19:45:32,544 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 108 transitions. Word has length 28 [2021-12-06 19:45:32,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:45:32,544 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 108 transitions. [2021-12-06 19:45:32,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.0384615384615383) internal successors, (53), 26 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:45:32,545 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 108 transitions. [2021-12-06 19:45:32,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-06 19:45:32,546 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:45:32,546 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:45:32,565 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76aa8f0d-13db-445e-bf4e-91fd574bfcc1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 19:45:32,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76aa8f0d-13db-445e-bf4e-91fd574bfcc1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-12-06 19:45:32,747 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:45:32,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:45:32,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1242204926, now seen corresponding path program 2 times [2021-12-06 19:45:32,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:45:32,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775097607] [2021-12-06 19:45:32,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:45:32,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:45:32,787 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 19:45:32,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [891626819] [2021-12-06 19:45:32,787 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 19:45:32,788 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:45:32,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76aa8f0d-13db-445e-bf4e-91fd574bfcc1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:45:32,788 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76aa8f0d-13db-445e-bf4e-91fd574bfcc1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:45:32,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76aa8f0d-13db-445e-bf4e-91fd574bfcc1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 19:45:32,830 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 19:45:32,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:45:32,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 19:45:32,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:45:32,891 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 19 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 19:45:32,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:45:32,944 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 19 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 19:45:32,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:45:32,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775097607] [2021-12-06 19:45:32,945 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 19:45:32,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891626819] [2021-12-06 19:45:32,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891626819] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:45:32,945 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:45:32,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-12-06 19:45:32,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005924422] [2021-12-06 19:45:32,946 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:45:32,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 19:45:32,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:45:32,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 19:45:32,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-12-06 19:45:32,947 INFO L87 Difference]: Start difference. First operand 87 states and 108 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:45:33,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:45:33,067 INFO L93 Difference]: Finished difference Result 177 states and 211 transitions. [2021-12-06 19:45:33,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 19:45:33,068 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 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 30 [2021-12-06 19:45:33,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:45:33,070 INFO L225 Difference]: With dead ends: 177 [2021-12-06 19:45:33,070 INFO L226 Difference]: Without dead ends: 110 [2021-12-06 19:45:33,071 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-12-06 19:45:33,072 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 66 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:45:33,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 71 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:45:33,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-12-06 19:45:33,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 83. [2021-12-06 19:45:33,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.1951219512195121) internal successors, (98), 82 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:45:33,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 98 transitions. [2021-12-06 19:45:33,085 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 98 transitions. Word has length 30 [2021-12-06 19:45:33,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:45:33,085 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 98 transitions. [2021-12-06 19:45:33,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:45:33,086 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 98 transitions. [2021-12-06 19:45:33,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-06 19:45:33,087 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:45:33,087 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:45:33,108 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76aa8f0d-13db-445e-bf4e-91fd574bfcc1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 19:45:33,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76aa8f0d-13db-445e-bf4e-91fd574bfcc1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:45:33,289 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:45:33,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:45:33,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1454731628, now seen corresponding path program 3 times [2021-12-06 19:45:33,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:45:33,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117612301] [2021-12-06 19:45:33,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:45:33,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:45:33,352 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 19:45:33,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1493453258] [2021-12-06 19:45:33,352 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 19:45:33,352 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:45:33,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76aa8f0d-13db-445e-bf4e-91fd574bfcc1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:45:33,353 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76aa8f0d-13db-445e-bf4e-91fd574bfcc1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:45:33,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76aa8f0d-13db-445e-bf4e-91fd574bfcc1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 19:45:33,454 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-12-06 19:45:33,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:45:33,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 19:45:33,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:45:33,510 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-06 19:45:33,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:45:33,562 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 5 proven. 22 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-06 19:45:33,562 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:45:33,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117612301] [2021-12-06 19:45:33,562 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 19:45:33,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493453258] [2021-12-06 19:45:33,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493453258] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:45:33,562 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:45:33,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-12-06 19:45:33,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232784724] [2021-12-06 19:45:33,562 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:45:33,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 19:45:33,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:45:33,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 19:45:33,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-12-06 19:45:33,564 INFO L87 Difference]: Start difference. First operand 83 states and 98 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:45:33,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:45:33,693 INFO L93 Difference]: Finished difference Result 128 states and 150 transitions. [2021-12-06 19:45:33,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 19:45:33,694 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 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 33 [2021-12-06 19:45:33,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:45:33,694 INFO L225 Difference]: With dead ends: 128 [2021-12-06 19:45:33,694 INFO L226 Difference]: Without dead ends: 68 [2021-12-06 19:45:33,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-12-06 19:45:33,695 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 106 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:45:33,696 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 53 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:45:33,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-12-06 19:45:33,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 39. [2021-12-06 19:45:33,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.105263157894737) internal successors, (42), 38 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) [2021-12-06 19:45:33,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2021-12-06 19:45:33,700 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 33 [2021-12-06 19:45:33,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:45:33,700 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2021-12-06 19:45:33,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:45:33,700 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2021-12-06 19:45:33,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-06 19:45:33,701 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:45:33,701 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:45:33,722 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76aa8f0d-13db-445e-bf4e-91fd574bfcc1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 19:45:33,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76aa8f0d-13db-445e-bf4e-91fd574bfcc1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:45:33,902 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:45:33,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:45:33,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1847758638, now seen corresponding path program 4 times [2021-12-06 19:45:33,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:45:33,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964280953] [2021-12-06 19:45:33,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:45:33,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:45:33,918 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 19:45:33,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1557531249] [2021-12-06 19:45:33,919 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 19:45:33,919 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:45:33,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76aa8f0d-13db-445e-bf4e-91fd574bfcc1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:45:33,920 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76aa8f0d-13db-445e-bf4e-91fd574bfcc1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:45:33,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76aa8f0d-13db-445e-bf4e-91fd574bfcc1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 19:45:33,951 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 19:45:33,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:45:33,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 19:45:33,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:45:34,030 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:45:34,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:45:34,088 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:45:34,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:45:34,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964280953] [2021-12-06 19:45:34,088 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 19:45:34,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557531249] [2021-12-06 19:45:34,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557531249] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:45:34,088 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:45:34,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2021-12-06 19:45:34,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269025839] [2021-12-06 19:45:34,089 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:45:34,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-06 19:45:34,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:45:34,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-06 19:45:34,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2021-12-06 19:45:34,090 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:45:34,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:45:34,224 INFO L93 Difference]: Finished difference Result 107 states and 113 transitions. [2021-12-06 19:45:34,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 19:45:34,224 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-12-06 19:45:34,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:45:34,225 INFO L225 Difference]: With dead ends: 107 [2021-12-06 19:45:34,225 INFO L226 Difference]: Without dead ends: 94 [2021-12-06 19:45:34,225 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2021-12-06 19:45:34,226 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 132 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:45:34,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 89 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:45:34,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-12-06 19:45:34,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 61. [2021-12-06 19:45:34,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.1) internal successors, (66), 60 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:45:34,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 66 transitions. [2021-12-06 19:45:34,232 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 66 transitions. Word has length 33 [2021-12-06 19:45:34,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:45:34,232 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 66 transitions. [2021-12-06 19:45:34,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:45:34,232 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 66 transitions. [2021-12-06 19:45:34,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-06 19:45:34,233 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:45:34,233 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:45:34,264 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76aa8f0d-13db-445e-bf4e-91fd574bfcc1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 19:45:34,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76aa8f0d-13db-445e-bf4e-91fd574bfcc1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-12-06 19:45:34,434 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:45:34,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:45:34,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1646708229, now seen corresponding path program 2 times [2021-12-06 19:45:34,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:45:34,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863084238] [2021-12-06 19:45:34,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:45:34,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:45:34,458 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 19:45:34,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1043081051] [2021-12-06 19:45:34,458 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 19:45:34,458 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:45:34,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76aa8f0d-13db-445e-bf4e-91fd574bfcc1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:45:34,459 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76aa8f0d-13db-445e-bf4e-91fd574bfcc1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:45:34,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76aa8f0d-13db-445e-bf4e-91fd574bfcc1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 19:45:34,675 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 19:45:34,676 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:45:34,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 47 conjunts are in the unsatisfiable core [2021-12-06 19:45:34,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:45:34,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-06 19:45:34,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 19:45:34,748 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 49 [2021-12-06 19:45:34,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:45:34,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:45:34,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:45:34,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 60 [2021-12-06 19:45:34,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:45:34,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 17 [2021-12-06 19:45:34,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:45:34,799 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 19:45:34,840 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 19:45:34,911 INFO L388 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 141 treesize of output 129 [2021-12-06 19:45:34,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:45:34,915 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:45:34,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:45:34,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:45:34,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:45:34,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:45:34,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:45:34,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 157 [2021-12-06 19:45:34,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:45:34,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:45:34,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:45:34,966 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 65 [2021-12-06 19:45:35,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:45:35,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:45:35,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:45:35,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 47 [2021-12-06 19:45:35,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 30 [2021-12-06 19:45:35,226 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:45:35,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:45:37,424 INFO L354 Elim1Store]: treesize reduction 113, result has 35.4 percent of original size [2021-12-06 19:45:37,425 INFO L388 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 1 new quantified variables, introduced 3 case distinctions, treesize of input 1300 treesize of output 881 [2021-12-06 19:45:37,436 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 19:45:37,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 921 treesize of output 883 [2021-12-06 19:46:00,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-12-06 19:46:00,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:46:00,041 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:46:00,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 59 [2021-12-06 19:46:00,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:46:00,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 32 [2021-12-06 19:46:00,101 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:46:00,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 55 [2021-12-06 19:46:00,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-12-06 19:46:00,370 INFO L354 Elim1Store]: treesize reduction 28, result has 50.9 percent of original size [2021-12-06 19:46:00,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 291 treesize of output 297 [2021-12-06 19:46:00,733 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:46:00,733 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:46:00,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863084238] [2021-12-06 19:46:00,733 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 19:46:00,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043081051] [2021-12-06 19:46:00,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043081051] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:46:00,733 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:46:00,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17] total 28 [2021-12-06 19:46:00,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723635049] [2021-12-06 19:46:00,734 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:46:00,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-06 19:46:00,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:46:00,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-06 19:46:00,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=630, Unknown=0, NotChecked=0, Total=756 [2021-12-06 19:46:00,735 INFO L87 Difference]: Start difference. First operand 61 states and 66 transitions. Second operand has 28 states, 28 states have (on average 2.2142857142857144) internal successors, (62), 28 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:46:01,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:46:01,268 INFO L93 Difference]: Finished difference Result 91 states and 98 transitions. [2021-12-06 19:46:01,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-12-06 19:46:01,268 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.2142857142857144) internal successors, (62), 28 states have internal predecessors, (62), 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 34 [2021-12-06 19:46:01,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:46:01,269 INFO L225 Difference]: With dead ends: 91 [2021-12-06 19:46:01,269 INFO L226 Difference]: Without dead ends: 89 [2021-12-06 19:46:01,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=174, Invalid=948, Unknown=0, NotChecked=0, Total=1122 [2021-12-06 19:46:01,270 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 18 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 133 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:46:01,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 82 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 125 Invalid, 0 Unknown, 133 Unchecked, 0.1s Time] [2021-12-06 19:46:01,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-12-06 19:46:01,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 82. [2021-12-06 19:46:01,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.0987654320987654) internal successors, (89), 81 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:46:01,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 89 transitions. [2021-12-06 19:46:01,277 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 89 transitions. Word has length 34 [2021-12-06 19:46:01,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:46:01,277 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 89 transitions. [2021-12-06 19:46:01,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.2142857142857144) internal successors, (62), 28 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:46:01,278 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 89 transitions. [2021-12-06 19:46:01,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-06 19:46:01,278 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:46:01,278 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:46:01,298 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76aa8f0d-13db-445e-bf4e-91fd574bfcc1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-06 19:46:01,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76aa8f0d-13db-445e-bf4e-91fd574bfcc1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-06 19:46:01,480 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:46:01,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:46:01,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1259217666, now seen corresponding path program 5 times [2021-12-06 19:46:01,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:46:01,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434570] [2021-12-06 19:46:01,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:46:01,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:46:01,531 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 19:46:01,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [589447163] [2021-12-06 19:46:01,532 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 19:46:01,532 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:46:01,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76aa8f0d-13db-445e-bf4e-91fd574bfcc1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:46:01,533 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76aa8f0d-13db-445e-bf4e-91fd574bfcc1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:46:01,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76aa8f0d-13db-445e-bf4e-91fd574bfcc1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-06 19:46:02,124 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-12-06 19:46:02,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:46:02,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 53 conjunts are in the unsatisfiable core [2021-12-06 19:46:02,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:46:02,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-06 19:46:02,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 19:46:02,202 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 97 [2021-12-06 19:46:02,205 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:46:02,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:46:02,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:46:02,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:46:02,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:46:02,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:46:02,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:46:02,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 131 [2021-12-06 19:46:02,231 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-06 19:46:02,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:46:02,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:46:02,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:46:02,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 63 [2021-12-06 19:46:02,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 60 [2021-12-06 19:46:02,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:46:02,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:46:02,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:46:02,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:46:02,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:46:02,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:46:02,317 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 79 [2021-12-06 19:46:02,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:46:02,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:46:02,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:46:02,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 31 [2021-12-06 19:46:02,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:46:02,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:46:02,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:46:02,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 34 [2021-12-06 19:46:02,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:46:02,428 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 34 [2021-12-06 19:46:02,510 INFO L388 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 159 treesize of output 143 [2021-12-06 19:46:02,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:46:02,514 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:46:02,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:46:02,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:46:02,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:46:02,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:46:02,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:46:02,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 160 [2021-12-06 19:46:02,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:46:02,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:46:02,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:46:02,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 142 treesize of output 101 [2021-12-06 19:46:02,662 INFO L388 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 170 treesize of output 150 [2021-12-06 19:46:02,665 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:46:02,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:46:02,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:46:02,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:46:02,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:46:02,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:46:02,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:46:02,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:46:02,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:46:02,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:46:02,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:46:02,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 177 [2021-12-06 19:46:02,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:46:02,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:46:02,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:46:02,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:46:02,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:46:02,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:46:02,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 44 [2021-12-06 19:46:02,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:46:02,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:46:02,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:46:02,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:46:02,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:46:02,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:46:02,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 74 [2021-12-06 19:46:02,958 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 11 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:46:02,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:47:08,020 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_328 Int)) (or (let ((.cse0 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|)) (.cse3 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse2 (* .cse0 8))) (and (or (<= .cse0 2147483647) (< v_ArrVal_328 (+ (select .cse1 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse2 (- 34359738368))) 2 (select .cse3 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse2 (- 34359738368)))))) (or (< 2147483647 .cse0) (< v_ArrVal_328 (+ (select .cse1 (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse2)) (select .cse3 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse2)) 2)))))) (let ((.cse6 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296))) (and (or (forall ((v_ArrVal_330 Int)) (or (< v_ArrVal_330 (+ v_ArrVal_328 2 (let ((.cse4 (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 8))) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse4) v_ArrVal_328)) |c_ULTIMATE.start_main_~b~0#1.base|) (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse4))))) (let ((.cse5 (mod (+ 2 |c_ULTIMATE.start_main_~i~0#1|) 4294967296))) (and (or (<= .cse5 2147483647) (forall ((v_ArrVal_333 Int)) (= (+ c_~N~0 1) (select (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 8)) v_ArrVal_328) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ 2 |c_ULTIMATE.start_main_~i~0#1|) 4294967296) 8) (- 34359738368)) v_ArrVal_330) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ 3 |c_ULTIMATE.start_main_~i~0#1|) 4294967296) 8)) v_ArrVal_333) |c_ULTIMATE.start_main_~a~0#1.offset|)))) (or (< 2147483647 .cse5) (forall ((v_ArrVal_333 Int)) (= (+ c_~N~0 1) (select (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 8)) v_ArrVal_328) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ 2 |c_ULTIMATE.start_main_~i~0#1|) 4294967296) 8)) v_ArrVal_330) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ 3 |c_ULTIMATE.start_main_~i~0#1|) 4294967296) 8)) v_ArrVal_333) |c_ULTIMATE.start_main_~a~0#1.offset|)))))))) (< 2147483647 .cse6)) (or (forall ((v_ArrVal_330 Int)) (or (< v_ArrVal_330 (+ v_ArrVal_328 2 (let ((.cse7 (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 8))) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse7 (- 34359738368)) v_ArrVal_328)) |c_ULTIMATE.start_main_~b~0#1.base|) (+ |c_ULTIMATE.start_main_~b~0#1.offset| .cse7 (- 34359738368)))))) (let ((.cse8 (mod (+ 2 |c_ULTIMATE.start_main_~i~0#1|) 4294967296))) (and (or (<= .cse8 2147483647) (forall ((v_ArrVal_333 Int)) (= (select (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 8) (- 34359738368)) v_ArrVal_328) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ 2 |c_ULTIMATE.start_main_~i~0#1|) 4294967296) 8) (- 34359738368)) v_ArrVal_330) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ 3 |c_ULTIMATE.start_main_~i~0#1|) 4294967296) 8)) v_ArrVal_333) |c_ULTIMATE.start_main_~a~0#1.offset|) (+ c_~N~0 1)))) (or (< 2147483647 .cse8) (forall ((v_ArrVal_333 Int)) (= (+ c_~N~0 1) (select (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 8) (- 34359738368)) v_ArrVal_328) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ 2 |c_ULTIMATE.start_main_~i~0#1|) 4294967296) 8)) v_ArrVal_330) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* (mod (+ 3 |c_ULTIMATE.start_main_~i~0#1|) 4294967296) 8)) v_ArrVal_333) |c_ULTIMATE.start_main_~a~0#1.offset|)))))))) (<= .cse6 2147483647)))))) is different from false [2021-12-06 19:47:08,083 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 12 refuted. 0 times theorem prover too weak. 22 trivial. 3 not checked. [2021-12-06 19:47:08,083 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:47:08,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434570] [2021-12-06 19:47:08,083 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 19:47:08,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589447163] [2021-12-06 19:47:08,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589447163] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:47:08,083 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:47:08,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 11] total 26 [2021-12-06 19:47:08,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617535496] [2021-12-06 19:47:08,083 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 19:47:08,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-06 19:47:08,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:47:08,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-06 19:47:08,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=463, Unknown=23, NotChecked=46, Total=650 [2021-12-06 19:47:08,084 INFO L87 Difference]: Start difference. First operand 82 states and 89 transitions. Second operand has 26 states, 26 states have (on average 2.230769230769231) internal successors, (58), 26 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:47:34,525 WARN L227 SmtUtils]: Spent 5.89s on a formula simplification that was a NOOP. DAG size: 119 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 19:48:02,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:48:02,554 INFO L93 Difference]: Finished difference Result 103 states and 113 transitions. [2021-12-06 19:48:02,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-12-06 19:48:02,555 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.230769230769231) internal successors, (58), 26 states have internal predecessors, (58), 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 36 [2021-12-06 19:48:02,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:48:02,555 INFO L225 Difference]: With dead ends: 103 [2021-12-06 19:48:02,555 INFO L226 Difference]: Without dead ends: 101 [2021-12-06 19:48:02,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 107.0s TimeCoverageRelationStatistics Valid=168, Invalid=723, Unknown=43, NotChecked=58, Total=992 [2021-12-06 19:48:02,558 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 35 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 353 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 19:48:02,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 100 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 197 Invalid, 0 Unknown, 353 Unchecked, 0.3s Time] [2021-12-06 19:48:02,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-12-06 19:48:02,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 94. [2021-12-06 19:48:02,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.118279569892473) internal successors, (104), 93 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:48:02,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 104 transitions. [2021-12-06 19:48:02,567 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 104 transitions. Word has length 36 [2021-12-06 19:48:02,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:48:02,567 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 104 transitions. [2021-12-06 19:48:02,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.230769230769231) internal successors, (58), 26 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:48:02,567 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 104 transitions. [2021-12-06 19:48:02,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-06 19:48:02,568 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:48:02,568 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:48:02,572 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76aa8f0d-13db-445e-bf4e-91fd574bfcc1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-06 19:48:02,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76aa8f0d-13db-445e-bf4e-91fd574bfcc1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-06 19:48:02,770 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:48:02,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:48:02,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1129715953, now seen corresponding path program 3 times [2021-12-06 19:48:02,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:48:02,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657421750] [2021-12-06 19:48:02,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:48:02,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:48:02,812 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 19:48:02,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [296594535] [2021-12-06 19:48:02,812 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 19:48:02,812 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:48:02,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76aa8f0d-13db-445e-bf4e-91fd574bfcc1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:48:02,813 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76aa8f0d-13db-445e-bf4e-91fd574bfcc1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:48:02,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76aa8f0d-13db-445e-bf4e-91fd574bfcc1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-06 19:48:03,050 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-12-06 19:48:03,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:48:03,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 65 conjunts are in the unsatisfiable core [2021-12-06 19:48:03,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:48:03,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-06 19:48:03,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 19:48:03,157 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 97 [2021-12-06 19:48:03,161 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:48:03,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:48:03,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:48:03,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:48:03,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:48:03,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:48:03,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:48:03,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 131 [2021-12-06 19:48:03,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:48:03,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:48:03,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:48:03,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 135 treesize of output 76 [2021-12-06 19:48:03,304 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 82 [2021-12-06 19:48:03,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:48:03,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:48:03,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:48:03,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:48:03,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:48:03,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:48:03,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 107 [2021-12-06 19:48:03,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:48:03,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:48:03,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:48:03,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 35 [2021-12-06 19:48:03,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:48:03,484 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 34 [2021-12-06 19:48:03,603 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-06 19:48:03,604 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 153 treesize of output 139 [2021-12-06 19:48:03,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:48:03,608 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 19:48:03,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:48:03,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:48:03,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:48:03,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:48:03,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:48:03,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 160 [2021-12-06 19:48:03,625 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-06 19:48:03,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:48:03,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:48:03,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:48:03,641 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 183 treesize of output 104 [2021-12-06 19:48:03,816 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-06 19:48:03,817 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 184 treesize of output 166 [2021-12-06 19:48:03,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:48:03,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:48:03,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:48:03,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:48:03,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:48:03,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:48:03,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:48:03,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:48:03,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:48:03,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:48:03,827 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 156 treesize of output 199 [2021-12-06 19:48:03,861 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-06 19:48:03,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:48:03,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:48:03,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:48:03,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:48:03,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:48:03,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:48:03,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 176 treesize of output 97 [2021-12-06 19:48:04,503 INFO L354 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2021-12-06 19:48:04,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 101 treesize of output 49 [2021-12-06 19:48:04,523 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:48:04,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:48:10,155 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63694 treesize of output 62830 [2021-12-06 19:48:10,371 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-12-06 19:48:10,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 71278 treesize of output 68046