./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/res2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_927f2450-abeb-46e3-8155-39afa130758e/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_927f2450-abeb-46e3-8155-39afa130758e/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_927f2450-abeb-46e3-8155-39afa130758e/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_927f2450-abeb-46e3-8155-39afa130758e/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/res2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_927f2450-abeb-46e3-8155-39afa130758e/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_927f2450-abeb-46e3-8155-39afa130758e/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 105e7597bd9cfde6146cefe87563ba1bc48309677fb8b2f1d1f421bc92453e6b --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 10:32:53,162 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:32:53,165 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:32:53,188 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:32:53,189 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:32:53,190 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:32:53,196 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:32:53,200 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:32:53,205 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:32:53,211 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:32:53,213 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:32:53,215 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:32:53,216 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:32:53,219 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:32:53,223 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:32:53,225 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:32:53,227 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:32:53,228 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:32:53,230 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:32:53,236 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:32:53,238 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:32:53,240 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:32:53,242 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:32:53,243 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:32:53,254 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:32:53,254 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:32:53,255 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:32:53,258 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:32:53,259 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:32:53,260 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:32:53,261 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:32:53,262 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:32:53,264 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:32:53,265 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:32:53,267 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:32:53,267 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:32:53,268 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:32:53,269 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:32:53,269 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:32:53,270 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:32:53,271 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:32:53,272 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_927f2450-abeb-46e3-8155-39afa130758e/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 10:32:53,309 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:32:53,309 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:32:53,309 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:32:53,310 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:32:53,314 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:32:53,314 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:32:53,315 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:32:53,316 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:32:53,316 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:32:53,316 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:32:53,317 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:32:53,317 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:32:53,318 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:32:53,318 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:32:53,318 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:32:53,318 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:32:53,318 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:32:53,319 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:32:53,319 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:32:53,319 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:32:53,319 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:32:53,319 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:32:53,320 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:32:53,320 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:32:53,320 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:32:53,321 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:32:53,321 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:32:53,321 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:32:53,322 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:32:53,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:32:53,322 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:32:53,322 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:32:53,323 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:32:53,323 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_927f2450-abeb-46e3-8155-39afa130758e/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_927f2450-abeb-46e3-8155-39afa130758e/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 105e7597bd9cfde6146cefe87563ba1bc48309677fb8b2f1d1f421bc92453e6b [2022-11-20 10:32:53,637 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:32:53,668 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:32:53,671 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:32:53,672 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:32:53,674 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:32:53,675 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_927f2450-abeb-46e3-8155-39afa130758e/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/array-fpi/res2.c [2022-11-20 10:32:56,710 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:32:56,964 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:32:56,965 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_927f2450-abeb-46e3-8155-39afa130758e/sv-benchmarks/c/array-fpi/res2.c [2022-11-20 10:32:56,972 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_927f2450-abeb-46e3-8155-39afa130758e/bin/uautomizer-ug76WZFUDN/data/c8a7da31c/e4b8afdec2ce43a2b70f36ef6dbf451c/FLAG9b2b16835 [2022-11-20 10:32:56,987 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_927f2450-abeb-46e3-8155-39afa130758e/bin/uautomizer-ug76WZFUDN/data/c8a7da31c/e4b8afdec2ce43a2b70f36ef6dbf451c [2022-11-20 10:32:56,990 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:32:56,992 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:32:56,993 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:32:56,993 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:32:57,005 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:32:57,009 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:32:56" (1/1) ... [2022-11-20 10:32:57,010 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cc34a3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:32:57, skipping insertion in model container [2022-11-20 10:32:57,010 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:32:56" (1/1) ... [2022-11-20 10:32:57,018 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:32:57,036 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:32:57,229 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_927f2450-abeb-46e3-8155-39afa130758e/sv-benchmarks/c/array-fpi/res2.c[587,600] [2022-11-20 10:32:57,282 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:32:57,291 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:32:57,310 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_927f2450-abeb-46e3-8155-39afa130758e/sv-benchmarks/c/array-fpi/res2.c[587,600] [2022-11-20 10:32:57,342 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:32:57,356 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:32:57,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:32:57 WrapperNode [2022-11-20 10:32:57,358 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:32:57,359 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:32:57,360 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:32:57,360 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:32:57,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:32:57" (1/1) ... [2022-11-20 10:32:57,390 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:32:57" (1/1) ... [2022-11-20 10:32:57,425 INFO L138 Inliner]: procedures = 17, calls = 36, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 120 [2022-11-20 10:32:57,425 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:32:57,426 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:32:57,426 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:32:57,427 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:32:57,436 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:32:57" (1/1) ... [2022-11-20 10:32:57,437 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:32:57" (1/1) ... [2022-11-20 10:32:57,442 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:32:57" (1/1) ... [2022-11-20 10:32:57,444 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:32:57" (1/1) ... [2022-11-20 10:32:57,459 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:32:57" (1/1) ... [2022-11-20 10:32:57,468 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:32:57" (1/1) ... [2022-11-20 10:32:57,475 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:32:57" (1/1) ... [2022-11-20 10:32:57,478 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:32:57" (1/1) ... [2022-11-20 10:32:57,480 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:32:57,483 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:32:57,484 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:32:57,484 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:32:57,485 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:32:57" (1/1) ... [2022-11-20 10:32:57,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:32:57,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_927f2450-abeb-46e3-8155-39afa130758e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:32:57,524 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_927f2450-abeb-46e3-8155-39afa130758e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:32:57,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_927f2450-abeb-46e3-8155-39afa130758e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:32:57,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:32:57,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:32:57,571 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 10:32:57,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 10:32:57,571 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 10:32:57,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:32:57,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:32:57,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 10:32:57,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 10:32:57,661 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:32:57,663 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:32:57,862 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:32:57,868 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:32:57,869 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-20 10:32:57,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:32:57 BoogieIcfgContainer [2022-11-20 10:32:57,871 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:32:57,874 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:32:57,874 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:32:57,877 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:32:57,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:32:56" (1/3) ... [2022-11-20 10:32:57,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28a86836 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:32:57, skipping insertion in model container [2022-11-20 10:32:57,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:32:57" (2/3) ... [2022-11-20 10:32:57,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28a86836 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:32:57, skipping insertion in model container [2022-11-20 10:32:57,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:32:57" (3/3) ... [2022-11-20 10:32:57,880 INFO L112 eAbstractionObserver]: Analyzing ICFG res2.c [2022-11-20 10:32:57,901 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:32:57,902 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 10:32:57,986 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:32:58,004 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@50209973, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:32:58,018 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 10:32:58,024 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 29 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) [2022-11-20 10:32:58,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-20 10:32:58,032 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:32:58,033 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:32:58,033 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:32:58,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:32:58,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1780399656, now seen corresponding path program 1 times [2022-11-20 10:32:58,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:32:58,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485502517] [2022-11-20 10:32:58,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:58,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:32:58,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:58,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:32:58,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:32:58,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485502517] [2022-11-20 10:32:58,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485502517] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:32:58,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:32:58,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:32:58,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671865798] [2022-11-20 10:32:58,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:32:58,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 10:32:58,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:32:58,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 10:32:58,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 10:32:58,413 INFO L87 Difference]: Start difference. First operand has 30 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 29 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) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:32:58,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:32:58,440 INFO L93 Difference]: Finished difference Result 56 states and 82 transitions. [2022-11-20 10:32:58,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 10:32:58,443 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 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 19 [2022-11-20 10:32:58,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:32:58,454 INFO L225 Difference]: With dead ends: 56 [2022-11-20 10:32:58,455 INFO L226 Difference]: Without dead ends: 26 [2022-11-20 10:32:58,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 10:32:58,468 INFO L413 NwaCegarLoop]: 36 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, 36 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:32:58,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:32:58,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-20 10:32:58,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-11-20 10:32:58,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.24) internal successors, (31), 25 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) [2022-11-20 10:32:58,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2022-11-20 10:32:58,504 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 19 [2022-11-20 10:32:58,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:32:58,505 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2022-11-20 10:32:58,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:32:58,506 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2022-11-20 10:32:58,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-20 10:32:58,506 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:32:58,507 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:32:58,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:32:58,507 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:32:58,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:32:58,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1279549768, now seen corresponding path program 1 times [2022-11-20 10:32:58,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:32:58,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841997532] [2022-11-20 10:32:58,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:58,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:32:58,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:32:58,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:32:58,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:32:58,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841997532] [2022-11-20 10:32:58,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841997532] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:32:58,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:32:58,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:32:58,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983142963] [2022-11-20 10:32:58,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:32:58,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:32:58,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:32:58,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:32:58,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:32:58,750 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:32:58,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:32:58,889 INFO L93 Difference]: Finished difference Result 57 states and 72 transitions. [2022-11-20 10:32:58,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:32:58,890 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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 19 [2022-11-20 10:32:58,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:32:58,891 INFO L225 Difference]: With dead ends: 57 [2022-11-20 10:32:58,891 INFO L226 Difference]: Without dead ends: 38 [2022-11-20 10:32:58,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:32:58,893 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 45 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:32:58,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 14 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:32:58,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-20 10:32:58,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 32. [2022-11-20 10:32:58,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 31 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:32:58,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2022-11-20 10:32:58,902 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 19 [2022-11-20 10:32:58,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:32:58,902 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2022-11-20 10:32:58,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:32:58,903 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2022-11-20 10:32:58,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-20 10:32:58,904 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:32:58,904 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:32:58,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 10:32:58,905 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:32:58,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:32:58,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1740145276, now seen corresponding path program 1 times [2022-11-20 10:32:58,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:32:58,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714885530] [2022-11-20 10:32:58,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:32:58,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:32:59,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:01,409 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:33:01,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:01,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714885530] [2022-11-20 10:33:01,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714885530] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:33:01,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986994580] [2022-11-20 10:33:01,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:01,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:33:01,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_927f2450-abeb-46e3-8155-39afa130758e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:33:01,417 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_927f2450-abeb-46e3-8155-39afa130758e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:33:01,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_927f2450-abeb-46e3-8155-39afa130758e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 10:33:01,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:01,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 54 conjunts are in the unsatisfiable core [2022-11-20 10:33:01,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:33:01,612 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 10:33:01,638 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 10:33:01,719 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-20 10:33:01,936 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 26 [2022-11-20 10:33:02,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:33:02,206 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-20 10:33:02,206 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-20 10:33:02,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:33:02,490 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 26 [2022-11-20 10:33:02,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:33:02,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:33:02,710 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-20 10:33:02,710 INFO L350 Elim1Store]: Elim1 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 1 case distinctions, treesize of input 32 treesize of output 34 [2022-11-20 10:33:02,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:33:02,888 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 26 [2022-11-20 10:33:03,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:33:03,002 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 12 [2022-11-20 10:33:03,039 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:33:03,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:33:39,861 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 10:33:39,864 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 10:33:39,866 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 10:33:39,888 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:33:39,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986994580] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:33:39,888 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:33:39,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 41 [2022-11-20 10:33:39,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106334733] [2022-11-20 10:33:39,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:33:39,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-20 10:33:39,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:39,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-20 10:33:39,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=1356, Unknown=13, NotChecked=0, Total=1640 [2022-11-20 10:33:39,905 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand has 41 states, 41 states have (on average 1.951219512195122) internal successors, (80), 41 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:41,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:33:41,340 INFO L93 Difference]: Finished difference Result 70 states and 82 transitions. [2022-11-20 10:33:41,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-20 10:33:41,341 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.951219512195122) internal successors, (80), 41 states have internal predecessors, (80), 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 31 [2022-11-20 10:33:41,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:33:41,342 INFO L225 Difference]: With dead ends: 70 [2022-11-20 10:33:41,342 INFO L226 Difference]: Without dead ends: 64 [2022-11-20 10:33:41,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 43 SyntacticMatches, 10 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 871 ImplicationChecksByTransitivity, 38.3s TimeCoverageRelationStatistics Valid=413, Invalid=2024, Unknown=13, NotChecked=0, Total=2450 [2022-11-20 10:33:41,351 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 76 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 337 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:33:41,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 139 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 179 Invalid, 0 Unknown, 337 Unchecked, 0.3s Time] [2022-11-20 10:33:41,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-11-20 10:33:41,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 51. [2022-11-20 10:33:41,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.22) internal successors, (61), 50 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:41,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 61 transitions. [2022-11-20 10:33:41,371 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 61 transitions. Word has length 31 [2022-11-20 10:33:41,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:33:41,371 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 61 transitions. [2022-11-20 10:33:41,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.951219512195122) internal successors, (80), 41 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:41,372 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2022-11-20 10:33:41,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-20 10:33:41,373 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:33:41,373 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:33:41,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_927f2450-abeb-46e3-8155-39afa130758e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 10:33:41,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_927f2450-abeb-46e3-8155-39afa130758e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:33:41,584 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:33:41,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:41,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1839245574, now seen corresponding path program 2 times [2022-11-20 10:33:41,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:41,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761509474] [2022-11-20 10:33:41,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:41,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:41,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:41,755 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 10:33:41,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:41,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761509474] [2022-11-20 10:33:41,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761509474] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:33:41,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890985822] [2022-11-20 10:33:41,757 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:33:41,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:33:41,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_927f2450-abeb-46e3-8155-39afa130758e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:33:41,759 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_927f2450-abeb-46e3-8155-39afa130758e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:33:41,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_927f2450-abeb-46e3-8155-39afa130758e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 10:33:41,872 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:33:41,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:33:41,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 10:33:41,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:33:41,956 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 10:33:41,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:33:42,022 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 10:33:42,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890985822] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:33:42,023 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:33:42,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-11-20 10:33:42,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047422462] [2022-11-20 10:33:42,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:33:42,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 10:33:42,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:42,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 10:33:42,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-20 10:33:42,025 INFO L87 Difference]: Start difference. First operand 51 states and 61 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:42,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:33:42,334 INFO L93 Difference]: Finished difference Result 130 states and 154 transitions. [2022-11-20 10:33:42,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 10:33:42,335 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 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 [2022-11-20 10:33:42,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:33:42,336 INFO L225 Difference]: With dead ends: 130 [2022-11-20 10:33:42,336 INFO L226 Difference]: Without dead ends: 72 [2022-11-20 10:33:42,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 58 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2022-11-20 10:33:42,338 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 94 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:33:42,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 33 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 10:33:42,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-11-20 10:33:42,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 54. [2022-11-20 10:33:42,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.169811320754717) internal successors, (62), 53 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) [2022-11-20 10:33:42,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2022-11-20 10:33:42,349 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 33 [2022-11-20 10:33:42,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:33:42,349 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2022-11-20 10:33:42,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:42,350 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2022-11-20 10:33:42,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-20 10:33:42,350 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:33:42,351 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:33:42,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_927f2450-abeb-46e3-8155-39afa130758e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 10:33:42,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_927f2450-abeb-46e3-8155-39afa130758e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:33:42,557 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:33:42,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:42,558 INFO L85 PathProgramCache]: Analyzing trace with hash 447877832, now seen corresponding path program 3 times [2022-11-20 10:33:42,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:42,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632084143] [2022-11-20 10:33:42,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:42,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:42,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:42,697 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 10:33:42,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:42,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632084143] [2022-11-20 10:33:42,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632084143] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:33:42,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699471968] [2022-11-20 10:33:42,698 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 10:33:42,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:33:42,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_927f2450-abeb-46e3-8155-39afa130758e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:33:42,700 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_927f2450-abeb-46e3-8155-39afa130758e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:33:42,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_927f2450-abeb-46e3-8155-39afa130758e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 10:33:42,815 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-20 10:33:42,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:33:42,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 10:33:42,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:33:42,904 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 10:33:42,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:33:42,980 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 10:33:42,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699471968] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:33:42,981 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:33:42,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-11-20 10:33:42,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417035464] [2022-11-20 10:33:42,982 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:33:42,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 10:33:42,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:33:42,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 10:33:42,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-20 10:33:42,983 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:43,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:33:43,229 INFO L93 Difference]: Finished difference Result 65 states and 73 transitions. [2022-11-20 10:33:43,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 10:33:43,230 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 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 35 [2022-11-20 10:33:43,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:33:43,231 INFO L225 Difference]: With dead ends: 65 [2022-11-20 10:33:43,231 INFO L226 Difference]: Without dead ends: 49 [2022-11-20 10:33:43,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 62 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2022-11-20 10:33:43,232 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 103 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:33:43,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 24 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:33:43,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-11-20 10:33:43,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 44. [2022-11-20 10:33:43,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.1395348837209303) internal successors, (49), 43 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:43,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2022-11-20 10:33:43,241 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 35 [2022-11-20 10:33:43,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:33:43,242 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2022-11-20 10:33:43,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:43,242 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2022-11-20 10:33:43,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-20 10:33:43,243 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:33:43,243 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:33:43,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_927f2450-abeb-46e3-8155-39afa130758e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 10:33:43,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_927f2450-abeb-46e3-8155-39afa130758e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:33:43,451 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:33:43,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:43,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1410382416, now seen corresponding path program 4 times [2022-11-20 10:33:43,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:33:43,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176290898] [2022-11-20 10:33:43,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:43,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:33:43,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:47,697 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:33:47,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:33:47,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176290898] [2022-11-20 10:33:47,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176290898] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:33:47,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917480525] [2022-11-20 10:33:47,698 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 10:33:47,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:33:47,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_927f2450-abeb-46e3-8155-39afa130758e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:33:47,703 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_927f2450-abeb-46e3-8155-39afa130758e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:33:47,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_927f2450-abeb-46e3-8155-39afa130758e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 10:33:47,860 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 10:33:47,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:33:47,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 95 conjunts are in the unsatisfiable core [2022-11-20 10:33:47,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:33:47,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 10:33:47,920 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 10:33:47,920 INFO L350 Elim1Store]: Elim1 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 23 treesize of output 19 [2022-11-20 10:33:48,033 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 10:33:48,311 INFO L350 Elim1Store]: Elim1 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 35 treesize of output 37 [2022-11-20 10:33:48,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:33:48,987 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 10:33:48,992 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 42 [2022-11-20 10:33:49,353 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 10:33:49,354 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 38 [2022-11-20 10:33:50,134 INFO L350 Elim1Store]: Elim1 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 47 treesize of output 44 [2022-11-20 10:33:50,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:33:50,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 52 [2022-11-20 10:33:51,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:33:51,070 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 10:33:51,073 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 64 [2022-11-20 10:33:51,522 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 59 [2022-11-20 10:33:52,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:33:52,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:33:52,083 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 10:33:52,110 INFO L321 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2022-11-20 10:33:52,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 71 treesize of output 74 [2022-11-20 10:33:53,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:33:53,102 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 10:33:53,239 INFO L321 Elim1Store]: treesize reduction 132, result has 30.5 percent of original size [2022-11-20 10:33:53,240 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 2 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 143 treesize of output 163 [2022-11-20 10:33:56,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:33:56,109 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 10:33:56,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:33:56,117 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 65 [2022-11-20 10:33:56,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:33:56,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 60 [2022-11-20 10:33:56,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:33:56,825 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 24 [2022-11-20 10:33:56,906 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:33:56,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:36:07,725 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 20 refuted. 4 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:36:07,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917480525] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:36:07,726 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:36:07,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 31, 31] total 90 [2022-11-20 10:36:07,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288130045] [2022-11-20 10:36:07,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:36:07,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2022-11-20 10:36:07,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:36:07,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2022-11-20 10:36:07,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=919, Invalid=7044, Unknown=47, NotChecked=0, Total=8010 [2022-11-20 10:36:07,732 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand has 90 states, 90 states have (on average 1.2777777777777777) internal successors, (115), 90 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:45,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:45,409 INFO L93 Difference]: Finished difference Result 121 states and 140 transitions. [2022-11-20 10:37:45,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-11-20 10:37:45,410 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 1.2777777777777777) internal successors, (115), 90 states have internal predecessors, (115), 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 43 [2022-11-20 10:37:45,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:45,412 INFO L225 Difference]: With dead ends: 121 [2022-11-20 10:37:45,413 INFO L226 Difference]: Without dead ends: 115 [2022-11-20 10:37:45,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5327 ImplicationChecksByTransitivity, 229.8s TimeCoverageRelationStatistics Valid=1614, Invalid=13068, Unknown=80, NotChecked=0, Total=14762 [2022-11-20 10:37:45,417 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 12 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 355 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:45,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 141 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 119 Invalid, 0 Unknown, 355 Unchecked, 0.2s Time] [2022-11-20 10:37:45,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-11-20 10:37:45,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 105. [2022-11-20 10:37:45,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.1826923076923077) internal successors, (123), 104 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:45,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 123 transitions. [2022-11-20 10:37:45,444 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 123 transitions. Word has length 43 [2022-11-20 10:37:45,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:45,444 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 123 transitions. [2022-11-20 10:37:45,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 1.2777777777777777) internal successors, (115), 90 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:45,445 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 123 transitions. [2022-11-20 10:37:45,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-20 10:37:45,446 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:45,446 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:37:45,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_927f2450-abeb-46e3-8155-39afa130758e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 10:37:45,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_927f2450-abeb-46e3-8155-39afa130758e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:37:45,652 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:37:45,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:45,653 INFO L85 PathProgramCache]: Analyzing trace with hash -313453870, now seen corresponding path program 5 times [2022-11-20 10:37:45,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:37:45,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248057603] [2022-11-20 10:37:45,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:45,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:37:45,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:45,816 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 10:37:45,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:37:45,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248057603] [2022-11-20 10:37:45,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248057603] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:37:45,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735801952] [2022-11-20 10:37:45,817 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 10:37:45,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:37:45,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_927f2450-abeb-46e3-8155-39afa130758e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:37:45,819 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_927f2450-abeb-46e3-8155-39afa130758e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:37:45,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_927f2450-abeb-46e3-8155-39afa130758e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 10:37:46,031 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-11-20 10:37:46,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:37:46,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 10:37:46,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:37:46,185 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 10:37:46,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:37:46,310 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 10:37:46,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735801952] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:37:46,311 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:37:46,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-11-20 10:37:46,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585320208] [2022-11-20 10:37:46,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:37:46,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 10:37:46,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:37:46,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 10:37:46,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2022-11-20 10:37:46,313 INFO L87 Difference]: Start difference. First operand 105 states and 123 transitions. Second operand has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 19 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:47,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:47,091 INFO L93 Difference]: Finished difference Result 158 states and 186 transitions. [2022-11-20 10:37:47,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-20 10:37:47,093 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 19 states have internal predecessors, (69), 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 45 [2022-11-20 10:37:47,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:47,093 INFO L225 Difference]: With dead ends: 158 [2022-11-20 10:37:47,093 INFO L226 Difference]: Without dead ends: 71 [2022-11-20 10:37:47,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 86 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=198, Invalid=858, Unknown=0, NotChecked=0, Total=1056 [2022-11-20 10:37:47,095 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 222 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:47,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 49 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 10:37:47,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-11-20 10:37:47,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 56. [2022-11-20 10:37:47,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.1090909090909091) internal successors, (61), 55 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:47,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2022-11-20 10:37:47,117 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 45 [2022-11-20 10:37:47,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:47,117 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2022-11-20 10:37:47,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 19 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:37:47,118 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2022-11-20 10:37:47,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-20 10:37:47,124 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:47,124 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:37:47,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_927f2450-abeb-46e3-8155-39afa130758e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 10:37:47,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_927f2450-abeb-46e3-8155-39afa130758e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:37:47,331 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:37:47,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:47,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1101638372, now seen corresponding path program 6 times [2022-11-20 10:37:47,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:37:47,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225086838] [2022-11-20 10:37:47,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:47,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:37:47,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:54,667 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:37:54,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:37:54,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225086838] [2022-11-20 10:37:54,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225086838] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:37:54,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368757930] [2022-11-20 10:37:54,668 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-20 10:37:54,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:37:54,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_927f2450-abeb-46e3-8155-39afa130758e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:37:54,669 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_927f2450-abeb-46e3-8155-39afa130758e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:37:54,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_927f2450-abeb-46e3-8155-39afa130758e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 10:37:55,022 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-11-20 10:37:55,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:37:55,026 WARN L261 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 136 conjunts are in the unsatisfiable core [2022-11-20 10:37:55,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:37:55,229 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 10:37:55,229 INFO L350 Elim1Store]: Elim1 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 31 treesize of output 27 [2022-11-20 10:37:55,254 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 10:37:55,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:37:55,390 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 10:37:55,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:37:55,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2022-11-20 10:37:56,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:37:56,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 52 [2022-11-20 10:37:57,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:37:57,009 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 10:37:57,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:37:57,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:37:57,013 INFO L350 Elim1Store]: Elim1 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 4 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 54 [2022-11-20 10:37:57,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:37:57,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:37:57,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:37:57,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:37:57,465 INFO L321 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-11-20 10:37:57,466 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 65 treesize of output 61 [2022-11-20 10:37:57,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:37:57,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:37:57,936 INFO L321 Elim1Store]: treesize reduction 50, result has 2.0 percent of original size [2022-11-20 10:37:57,936 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 65 treesize of output 68 [2022-11-20 10:37:59,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:37:59,165 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 10:37:59,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:37:59,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:37:59,169 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 10:37:59,174 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 61 [2022-11-20 10:37:59,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:37:59,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:37:59,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:37:59,683 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 75 [2022-11-20 10:38:00,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:38:00,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:38:00,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:38:00,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:38:00,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:38:00,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 80 [2022-11-20 10:38:00,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:38:00,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:38:00,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:38:00,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:38:00,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:38:00,955 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 88 [2022-11-20 10:38:01,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:38:01,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:38:01,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:38:01,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:38:01,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:38:01,393 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-20 10:38:01,394 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 12 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 3 case distinctions, treesize of input 101 treesize of output 100 [2022-11-20 10:38:01,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:38:01,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:38:01,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:38:01,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:38:01,998 INFO L321 Elim1Store]: treesize reduction 50, result has 2.0 percent of original size [2022-11-20 10:38:01,998 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 14 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 5 case distinctions, treesize of input 104 treesize of output 106 [2022-11-20 10:38:03,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:38:03,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:38:03,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:38:03,528 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 10:38:03,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:38:03,530 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 10:38:03,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:38:03,535 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 12 disjoint index pairs (out of 36 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 99 [2022-11-20 10:38:04,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:38:04,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:38:04,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:38:04,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:38:04,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:38:04,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:38:04,284 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 13 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 109 [2022-11-20 10:38:05,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:38:05,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:38:05,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:38:05,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:38:05,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:38:05,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:38:05,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:38:05,059 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 15 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 119 [2022-11-20 10:38:06,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:38:06,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:38:06,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:38:06,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:38:06,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:38:06,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:38:06,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:38:06,017 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 15 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 140 treesize of output 127 [2022-11-20 10:38:06,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:38:06,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:38:06,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:38:06,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:38:06,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:38:06,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:38:06,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:38:06,543 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-20 10:38:06,543 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 15 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 3 case distinctions, treesize of input 149 treesize of output 139 [2022-11-20 10:38:07,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:38:07,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:38:07,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:38:07,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:38:07,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:38:07,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:38:07,344 INFO L321 Elim1Store]: treesize reduction 50, result has 2.0 percent of original size [2022-11-20 10:38:07,345 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 17 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 5 case distinctions, treesize of input 147 treesize of output 144 [2022-11-20 10:38:09,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:38:09,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:38:09,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:38:09,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:38:09,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:38:09,894 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 10:38:09,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:38:09,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:38:09,897 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 10:38:09,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:38:09,900 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 15 disjoint index pairs (out of 66 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 135 treesize of output 41 [2022-11-20 10:38:10,032 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:38:10,032 INFO L328 TraceCheckSpWp]: Computing backward predicates...