./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/s3lif.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/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_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/s3lif.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/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_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/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 3aac75742402b60de8e734a48b2dd5180b95add96e084901e84c53f880aa300a --- 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 09:27:08,223 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 09:27:08,225 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 09:27:08,244 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 09:27:08,245 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 09:27:08,246 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 09:27:08,247 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 09:27:08,249 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 09:27:08,251 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 09:27:08,252 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 09:27:08,253 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 09:27:08,255 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 09:27:08,255 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 09:27:08,257 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 09:27:08,258 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 09:27:08,259 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 09:27:08,260 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 09:27:08,262 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 09:27:08,264 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 09:27:08,266 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 09:27:08,267 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 09:27:08,271 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 09:27:08,272 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 09:27:08,273 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 09:27:08,277 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 09:27:08,278 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 09:27:08,278 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 09:27:08,279 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 09:27:08,280 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 09:27:08,281 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 09:27:08,281 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 09:27:08,282 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 09:27:08,283 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 09:27:08,284 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 09:27:08,285 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 09:27:08,286 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 09:27:08,287 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 09:27:08,287 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 09:27:08,288 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 09:27:08,289 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 09:27:08,290 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 09:27:08,292 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 09:27:08,314 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 09:27:08,314 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 09:27:08,315 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 09:27:08,315 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 09:27:08,316 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 09:27:08,316 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 09:27:08,317 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 09:27:08,318 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 09:27:08,318 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 09:27:08,318 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 09:27:08,319 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 09:27:08,319 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 09:27:08,319 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 09:27:08,319 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 09:27:08,320 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 09:27:08,320 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 09:27:08,320 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 09:27:08,320 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 09:27:08,321 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 09:27:08,321 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 09:27:08,321 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 09:27:08,322 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 09:27:08,322 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 09:27:08,322 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 09:27:08,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:27:08,323 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 09:27:08,323 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 09:27:08,323 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 09:27:08,324 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 09:27:08,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 09:27:08,324 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 09:27:08,324 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 09:27:08,325 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 09:27:08,325 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_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3aac75742402b60de8e734a48b2dd5180b95add96e084901e84c53f880aa300a [2022-11-20 09:27:08,590 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 09:27:08,625 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 09:27:08,629 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 09:27:08,631 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 09:27:08,631 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 09:27:08,633 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/array-fpi/s3lif.c [2022-11-20 09:27:11,649 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 09:27:11,867 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 09:27:11,867 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/sv-benchmarks/c/array-fpi/s3lif.c [2022-11-20 09:27:11,878 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/data/3540eafb9/4b7679f9dedf4315acb534bc44c023d7/FLAG560409a76 [2022-11-20 09:27:11,893 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/data/3540eafb9/4b7679f9dedf4315acb534bc44c023d7 [2022-11-20 09:27:11,896 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 09:27:11,897 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 09:27:11,899 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 09:27:11,899 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 09:27:11,903 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 09:27:11,904 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:27:11" (1/1) ... [2022-11-20 09:27:11,905 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c727c86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:11, skipping insertion in model container [2022-11-20 09:27:11,905 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:27:11" (1/1) ... [2022-11-20 09:27:11,913 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 09:27:11,928 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 09:27:12,079 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_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/sv-benchmarks/c/array-fpi/s3lif.c[588,601] [2022-11-20 09:27:12,101 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:27:12,111 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 09:27:12,124 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_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/sv-benchmarks/c/array-fpi/s3lif.c[588,601] [2022-11-20 09:27:12,133 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:27:12,148 INFO L208 MainTranslator]: Completed translation [2022-11-20 09:27:12,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12 WrapperNode [2022-11-20 09:27:12,149 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 09:27:12,150 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 09:27:12,150 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 09:27:12,150 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 09:27:12,158 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12" (1/1) ... [2022-11-20 09:27:12,170 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12" (1/1) ... [2022-11-20 09:27:12,208 INFO L138 Inliner]: procedures = 17, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 89 [2022-11-20 09:27:12,209 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 09:27:12,209 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 09:27:12,209 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 09:27:12,210 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 09:27:12,220 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12" (1/1) ... [2022-11-20 09:27:12,221 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12" (1/1) ... [2022-11-20 09:27:12,232 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12" (1/1) ... [2022-11-20 09:27:12,233 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12" (1/1) ... [2022-11-20 09:27:12,238 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12" (1/1) ... [2022-11-20 09:27:12,242 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12" (1/1) ... [2022-11-20 09:27:12,244 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12" (1/1) ... [2022-11-20 09:27:12,245 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12" (1/1) ... [2022-11-20 09:27:12,247 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 09:27:12,248 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 09:27:12,248 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 09:27:12,249 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 09:27:12,250 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12" (1/1) ... [2022-11-20 09:27:12,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:27:12,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:12,288 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 09:27:12,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 09:27:12,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 09:27:12,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 09:27:12,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 09:27:12,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 09:27:12,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 09:27:12,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 09:27:12,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 09:27:12,328 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 09:27:12,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 09:27:12,393 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 09:27:12,395 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 09:27:12,599 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 09:27:12,606 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 09:27:12,606 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-20 09:27:12,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:27:12 BoogieIcfgContainer [2022-11-20 09:27:12,609 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 09:27:12,611 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 09:27:12,612 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 09:27:12,615 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 09:27:12,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:27:11" (1/3) ... [2022-11-20 09:27:12,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28db271a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:27:12, skipping insertion in model container [2022-11-20 09:27:12,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12" (2/3) ... [2022-11-20 09:27:12,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28db271a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:27:12, skipping insertion in model container [2022-11-20 09:27:12,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:27:12" (3/3) ... [2022-11-20 09:27:12,619 INFO L112 eAbstractionObserver]: Analyzing ICFG s3lif.c [2022-11-20 09:27:12,641 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 09:27:12,641 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 09:27:12,698 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 09:27:12,716 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;@4fe38d81, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 09:27:12,717 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 09:27:12,722 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 20 states have (on average 1.55) internal successors, (31), 21 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 09:27:12,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 09:27:12,729 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:12,730 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:12,731 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:12,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:12,736 INFO L85 PathProgramCache]: Analyzing trace with hash -845640729, now seen corresponding path program 1 times [2022-11-20 09:27:12,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:12,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528952823] [2022-11-20 09:27:12,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:12,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:12,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:12,912 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 09:27:12,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:12,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528952823] [2022-11-20 09:27:12,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528952823] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:12,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:12,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 09:27:12,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631134620] [2022-11-20 09:27:12,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:12,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 09:27:12,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:12,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 09:27:12,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 09:27:12,982 INFO L87 Difference]: Start difference. First operand has 22 states, 20 states have (on average 1.55) internal successors, (31), 21 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) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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 09:27:12,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:13,000 INFO L93 Difference]: Finished difference Result 40 states and 56 transitions. [2022-11-20 09:27:13,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 09:27:13,002 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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 13 [2022-11-20 09:27:13,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:13,011 INFO L225 Difference]: With dead ends: 40 [2022-11-20 09:27:13,012 INFO L226 Difference]: Without dead ends: 18 [2022-11-20 09:27:13,015 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 09:27:13,019 INFO L413 NwaCegarLoop]: 26 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, 26 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 09:27:13,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:27:13,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-20 09:27:13,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-11-20 09:27:13,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 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 09:27:13,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2022-11-20 09:27:13,070 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 13 [2022-11-20 09:27:13,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:13,071 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2022-11-20 09:27:13,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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 09:27:13,073 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2022-11-20 09:27:13,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 09:27:13,073 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:13,074 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:13,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 09:27:13,075 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:13,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:13,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1238667739, now seen corresponding path program 1 times [2022-11-20 09:27:13,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:13,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433842268] [2022-11-20 09:27:13,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:13,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:13,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:13,351 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 09:27:13,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:13,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433842268] [2022-11-20 09:27:13,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433842268] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:13,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:13,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 09:27:13,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151142331] [2022-11-20 09:27:13,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:13,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:27:13,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:13,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:27:13,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:27:13,361 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 09:27:13,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:13,465 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2022-11-20 09:27:13,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 09:27:13,466 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2022-11-20 09:27:13,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:13,467 INFO L225 Difference]: With dead ends: 36 [2022-11-20 09:27:13,467 INFO L226 Difference]: Without dead ends: 25 [2022-11-20 09:27:13,468 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 09:27:13,469 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 23 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:13,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 11 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 09:27:13,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-11-20 09:27:13,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 21. [2022-11-20 09:27:13,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 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 09:27:13,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2022-11-20 09:27:13,478 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 13 [2022-11-20 09:27:13,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:13,478 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2022-11-20 09:27:13,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 09:27:13,479 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2022-11-20 09:27:13,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-20 09:27:13,480 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:13,480 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] [2022-11-20 09:27:13,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 09:27:13,481 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:13,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:13,482 INFO L85 PathProgramCache]: Analyzing trace with hash 2001188913, now seen corresponding path program 1 times [2022-11-20 09:27:13,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:13,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391955362] [2022-11-20 09:27:13,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:13,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:13,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:14,706 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:14,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:14,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391955362] [2022-11-20 09:27:14,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391955362] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:27:14,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78324366] [2022-11-20 09:27:14,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:14,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:27:14,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:14,715 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:27:14,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 09:27:14,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:14,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-20 09:27:14,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:27:14,933 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 09:27:14,955 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 09:27:15,032 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 14 treesize of output 16 [2022-11-20 09:27:15,309 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 32 treesize of output 23 [2022-11-20 09:27:15,469 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 36 treesize of output 23 [2022-11-20 09:27:15,632 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:15,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:27:16,020 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 09:27:16,021 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 28 [2022-11-20 09:27:16,099 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 09:27:16,100 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2022-11-20 09:27:16,107 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:27:16,110 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2022-11-20 09:27:16,127 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:16,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78324366] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:27:16,128 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:27:16,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 13] total 30 [2022-11-20 09:27:16,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548284765] [2022-11-20 09:27:16,129 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:27:16,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-20 09:27:16,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:16,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-20 09:27:16,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=694, Unknown=0, NotChecked=0, Total=870 [2022-11-20 09:27:16,132 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 30 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 30 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 09:27:16,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:16,539 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2022-11-20 09:27:16,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 09:27:16,540 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 30 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) Word has length 20 [2022-11-20 09:27:16,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:16,542 INFO L225 Difference]: With dead ends: 46 [2022-11-20 09:27:16,543 INFO L226 Difference]: Without dead ends: 40 [2022-11-20 09:27:16,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 25 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=241, Invalid=949, Unknown=0, NotChecked=0, Total=1190 [2022-11-20 09:27:16,544 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 18 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 22 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:16,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 54 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 112 Invalid, 0 Unknown, 22 Unchecked, 0.1s Time] [2022-11-20 09:27:16,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-11-20 09:27:16,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 34. [2022-11-20 09:27:16,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 33 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:16,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2022-11-20 09:27:16,554 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 20 [2022-11-20 09:27:16,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:16,554 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2022-11-20 09:27:16,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 30 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 09:27:16,555 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2022-11-20 09:27:16,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-20 09:27:16,556 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:16,556 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] [2022-11-20 09:27:16,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 09:27:16,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:27:16,762 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:16,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:16,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1608161903, now seen corresponding path program 1 times [2022-11-20 09:27:16,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:16,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584294100] [2022-11-20 09:27:16,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:16,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:16,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:17,052 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:27:17,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:17,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584294100] [2022-11-20 09:27:17,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584294100] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:27:17,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201625685] [2022-11-20 09:27:17,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:17,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:27:17,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:17,055 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:27:17,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 09:27:17,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:17,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 09:27:17,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:27:17,155 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 18 treesize of output 14 [2022-11-20 09:27:17,191 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-20 09:27:17,201 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:27:17,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:27:17,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2022-11-20 09:27:17,236 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 18 treesize of output 16 [2022-11-20 09:27:17,250 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:27:17,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201625685] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:27:17,251 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:27:17,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2022-11-20 09:27:17,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942660981] [2022-11-20 09:27:17,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:27:17,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 09:27:17,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:17,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 09:27:17,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-20 09:27:17,253 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 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 09:27:17,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:17,386 INFO L93 Difference]: Finished difference Result 49 states and 60 transitions. [2022-11-20 09:27:17,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 09:27:17,387 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 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 20 [2022-11-20 09:27:17,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:17,387 INFO L225 Difference]: With dead ends: 49 [2022-11-20 09:27:17,387 INFO L226 Difference]: Without dead ends: 38 [2022-11-20 09:27:17,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2022-11-20 09:27:17,389 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 7 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:17,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 60 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 09:27:17,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-20 09:27:17,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2022-11-20 09:27:17,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.2352941176470589) internal successors, (42), 34 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:17,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2022-11-20 09:27:17,398 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 20 [2022-11-20 09:27:17,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:17,398 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2022-11-20 09:27:17,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 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 09:27:17,399 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2022-11-20 09:27:17,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-20 09:27:17,399 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:17,399 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] [2022-11-20 09:27:17,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 09:27:17,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:27:17,605 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:17,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:17,606 INFO L85 PathProgramCache]: Analyzing trace with hash -949569453, now seen corresponding path program 2 times [2022-11-20 09:27:17,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:17,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958639009] [2022-11-20 09:27:17,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:17,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:17,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:17,728 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:27:17,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:17,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958639009] [2022-11-20 09:27:17,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958639009] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:27:17,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357838037] [2022-11-20 09:27:17,728 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:27:17,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:27:17,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:17,730 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:27:17,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 09:27:17,808 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 09:27:17,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:27:17,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 09:27:17,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:27:17,868 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:27:17,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:27:17,919 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:27:17,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357838037] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:27:17,920 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:27:17,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-11-20 09:27:17,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777571742] [2022-11-20 09:27:17,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:27:17,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 09:27:17,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:17,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 09:27:17,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-20 09:27:17,922 INFO L87 Difference]: Start difference. First operand 35 states and 42 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:18,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:18,175 INFO L93 Difference]: Finished difference Result 70 states and 81 transitions. [2022-11-20 09:27:18,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 09:27:18,176 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-20 09:27:18,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:18,176 INFO L225 Difference]: With dead ends: 70 [2022-11-20 09:27:18,177 INFO L226 Difference]: Without dead ends: 44 [2022-11-20 09:27:18,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 36 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2022-11-20 09:27:18,178 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 59 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:18,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 28 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 09:27:18,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-11-20 09:27:18,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 30. [2022-11-20 09:27:18,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:18,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2022-11-20 09:27:18,186 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 22 [2022-11-20 09:27:18,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:18,187 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2022-11-20 09:27:18,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:18,187 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2022-11-20 09:27:18,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-20 09:27:18,188 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:18,188 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] [2022-11-20 09:27:18,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 09:27:18,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:27:18,395 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:18,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:18,395 INFO L85 PathProgramCache]: Analyzing trace with hash -2105967953, now seen corresponding path program 3 times [2022-11-20 09:27:18,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:18,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221035756] [2022-11-20 09:27:18,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:18,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:18,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:18,511 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:27:18,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:18,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221035756] [2022-11-20 09:27:18,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221035756] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:27:18,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257276596] [2022-11-20 09:27:18,513 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 09:27:18,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:27:18,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:18,514 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:27:18,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 09:27:18,599 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-20 09:27:18,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:27:18,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 09:27:18,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:27:18,666 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:27:18,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:27:18,729 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:27:18,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257276596] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:27:18,730 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:27:18,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-11-20 09:27:18,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047579442] [2022-11-20 09:27:18,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:27:18,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 09:27:18,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:18,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 09:27:18,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-20 09:27:18,734 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 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 09:27:18,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:18,887 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2022-11-20 09:27:18,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 09:27:18,888 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 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 22 [2022-11-20 09:27:18,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:18,891 INFO L225 Difference]: With dead ends: 39 [2022-11-20 09:27:18,891 INFO L226 Difference]: Without dead ends: 31 [2022-11-20 09:27:18,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2022-11-20 09:27:18,894 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 47 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:18,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 26 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 09:27:18,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-20 09:27:18,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2022-11-20 09:27:18,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 27 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 09:27:18,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2022-11-20 09:27:18,907 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 22 [2022-11-20 09:27:18,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:18,908 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2022-11-20 09:27:18,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 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 09:27:18,908 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2022-11-20 09:27:18,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-20 09:27:18,909 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:18,909 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:18,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 09:27:19,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 09:27:19,116 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:19,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:19,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1032594067, now seen corresponding path program 4 times [2022-11-20 09:27:19,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:19,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472877616] [2022-11-20 09:27:19,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:19,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:19,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:21,350 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:21,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:21,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472877616] [2022-11-20 09:27:21,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472877616] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:27:21,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114268196] [2022-11-20 09:27:21,352 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 09:27:21,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:27:21,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:21,355 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:27:21,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 09:27:21,443 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 09:27:21,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:27:21,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 59 conjunts are in the unsatisfiable core [2022-11-20 09:27:21,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:27:21,460 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 09:27:21,468 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 09:27:21,514 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 14 treesize of output 16 [2022-11-20 09:27:21,572 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 14 treesize of output 16 [2022-11-20 09:27:21,807 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 44 treesize of output 27 [2022-11-20 09:27:21,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:27:21,998 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 35 [2022-11-20 09:27:22,172 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:27:22,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:27:22,175 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 39 [2022-11-20 09:27:22,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 33 [2022-11-20 09:27:22,479 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 32 [2022-11-20 09:27:22,522 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:22,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:27:23,883 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 09:27:23,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 264 treesize of output 124 [2022-11-20 09:27:33,331 WARN L233 SmtUtils]: Spent 9.31s on a formula simplification that was a NOOP. DAG size: 39 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 09:27:45,159 WARN L233 SmtUtils]: Spent 11.43s on a formula simplification that was a NOOP. DAG size: 39 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 09:27:45,316 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:45,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2114268196] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:27:45,317 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:27:45,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 17, 18] total 50 [2022-11-20 09:27:45,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385481537] [2022-11-20 09:27:45,318 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:27:45,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-11-20 09:27:45,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:45,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-11-20 09:27:45,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=2068, Unknown=0, NotChecked=0, Total=2450 [2022-11-20 09:27:45,320 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 50 states, 50 states have (on average 1.4) internal successors, (70), 50 states have internal predecessors, (70), 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 09:28:20,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:20,189 INFO L93 Difference]: Finished difference Result 85 states and 105 transitions. [2022-11-20 09:28:20,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-11-20 09:28:20,190 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.4) internal successors, (70), 50 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-11-20 09:28:20,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:20,190 INFO L225 Difference]: With dead ends: 85 [2022-11-20 09:28:20,190 INFO L226 Difference]: Without dead ends: 79 [2022-11-20 09:28:20,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2572 ImplicationChecksByTransitivity, 53.6s TimeCoverageRelationStatistics Valid=1335, Invalid=6675, Unknown=0, NotChecked=0, Total=8010 [2022-11-20 09:28:20,205 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 94 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:20,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 107 Invalid, 913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 646 Invalid, 0 Unknown, 57 Unchecked, 4.5s Time] [2022-11-20 09:28:20,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-11-20 09:28:20,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 52. [2022-11-20 09:28:20,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.2745098039215685) internal successors, (65), 51 states have internal predecessors, (65), 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 09:28:20,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 65 transitions. [2022-11-20 09:28:20,223 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 65 transitions. Word has length 27 [2022-11-20 09:28:20,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:20,223 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 65 transitions. [2022-11-20 09:28:20,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.4) internal successors, (70), 50 states have internal predecessors, (70), 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 09:28:20,224 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 65 transitions. [2022-11-20 09:28:20,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-20 09:28:20,224 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:20,224 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:20,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 09:28:20,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:28:20,427 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:28:20,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:20,428 INFO L85 PathProgramCache]: Analyzing trace with hash -774428629, now seen corresponding path program 1 times [2022-11-20 09:28:20,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:20,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172693830] [2022-11-20 09:28:20,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:20,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:20,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:21,330 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 09:28:21,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:21,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172693830] [2022-11-20 09:28:21,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172693830] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:28:21,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202042933] [2022-11-20 09:28:21,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:21,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:28:21,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:28:21,335 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:28:21,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 09:28:21,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:21,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-20 09:28:21,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:28:21,515 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-20 09:28:21,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:28:21,716 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 23 treesize of output 22 [2022-11-20 09:28:21,789 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-20 09:28:21,847 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 09:28:21,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:28:22,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2022-11-20 09:28:22,071 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 20 treesize of output 16 [2022-11-20 09:28:22,187 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 09:28:22,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1202042933] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:28:22,187 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:28:22,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2022-11-20 09:28:22,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96443681] [2022-11-20 09:28:22,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:28:22,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 09:28:22,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:22,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 09:28:22,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-11-20 09:28:22,190 INFO L87 Difference]: Start difference. First operand 52 states and 65 transitions. Second operand has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 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 09:28:22,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:22,994 INFO L93 Difference]: Finished difference Result 78 states and 96 transitions. [2022-11-20 09:28:22,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 09:28:22,994 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-11-20 09:28:22,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:22,995 INFO L225 Difference]: With dead ends: 78 [2022-11-20 09:28:22,995 INFO L226 Difference]: Without dead ends: 54 [2022-11-20 09:28:22,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 48 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2022-11-20 09:28:22,996 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 17 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:22,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 59 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 09:28:22,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-11-20 09:28:23,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 48. [2022-11-20 09:28:23,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.2127659574468086) internal successors, (57), 47 states have internal predecessors, (57), 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 09:28:23,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 57 transitions. [2022-11-20 09:28:23,007 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 57 transitions. Word has length 27 [2022-11-20 09:28:23,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:23,008 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 57 transitions. [2022-11-20 09:28:23,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 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 09:28:23,008 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 57 transitions. [2022-11-20 09:28:23,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-20 09:28:23,009 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:23,009 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:23,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 09:28:23,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:28:23,220 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:28:23,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:23,221 INFO L85 PathProgramCache]: Analyzing trace with hash -132219249, now seen corresponding path program 5 times [2022-11-20 09:28:23,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:23,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798368024] [2022-11-20 09:28:23,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:23,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:23,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:23,578 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 09:28:23,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:23,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798368024] [2022-11-20 09:28:23,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798368024] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:28:23,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241985324] [2022-11-20 09:28:23,579 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 09:28:23,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:28:23,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:28:23,581 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:28:23,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 09:28:23,691 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-11-20 09:28:23,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:28:23,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 09:28:23,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:28:24,158 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 09:28:24,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:28:24,488 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 09:28:24,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241985324] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:28:24,488 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:28:24,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2022-11-20 09:28:24,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513677480] [2022-11-20 09:28:24,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:28:24,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 09:28:24,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:24,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 09:28:24,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2022-11-20 09:28:24,490 INFO L87 Difference]: Start difference. First operand 48 states and 57 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 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 09:28:25,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:25,220 INFO L93 Difference]: Finished difference Result 91 states and 105 transitions. [2022-11-20 09:28:25,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 09:28:25,221 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-11-20 09:28:25,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:25,221 INFO L225 Difference]: With dead ends: 91 [2022-11-20 09:28:25,222 INFO L226 Difference]: Without dead ends: 53 [2022-11-20 09:28:25,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 47 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2022-11-20 09:28:25,223 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 69 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:25,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 34 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 09:28:25,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-11-20 09:28:25,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 39. [2022-11-20 09:28:25,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.131578947368421) internal successors, (43), 38 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 09:28:25,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2022-11-20 09:28:25,235 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 29 [2022-11-20 09:28:25,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:25,235 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2022-11-20 09:28:25,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 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 09:28:25,236 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2022-11-20 09:28:25,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-20 09:28:25,237 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:25,237 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:25,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 09:28:25,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-20 09:28:25,443 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:28:25,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:25,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1292373713, now seen corresponding path program 6 times [2022-11-20 09:28:25,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:25,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905507314] [2022-11-20 09:28:25,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:25,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:25,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:25,831 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 09:28:25,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:25,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905507314] [2022-11-20 09:28:25,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905507314] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:28:25,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980938360] [2022-11-20 09:28:25,832 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-20 09:28:25,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:28:25,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:28:25,834 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:28:25,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 09:28:25,933 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-11-20 09:28:25,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:28:25,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 09:28:25,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:28:26,396 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 09:28:26,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:28:26,766 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 09:28:26,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [980938360] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:28:26,767 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:28:26,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2022-11-20 09:28:26,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430722091] [2022-11-20 09:28:26,767 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:28:26,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 09:28:26,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:26,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 09:28:26,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2022-11-20 09:28:26,768 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 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 09:28:27,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:27,496 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2022-11-20 09:28:27,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 09:28:27,496 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-11-20 09:28:27,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:27,497 INFO L225 Difference]: With dead ends: 48 [2022-11-20 09:28:27,497 INFO L226 Difference]: Without dead ends: 38 [2022-11-20 09:28:27,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 47 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2022-11-20 09:28:27,499 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 76 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:27,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 21 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 09:28:27,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-20 09:28:27,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2022-11-20 09:28:27,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 34 states have internal predecessors, (38), 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 09:28:27,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2022-11-20 09:28:27,539 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 29 [2022-11-20 09:28:27,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:27,540 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2022-11-20 09:28:27,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 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 09:28:27,540 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2022-11-20 09:28:27,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-20 09:28:27,544 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:27,544 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:27,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 09:28:27,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:28:27,751 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:28:27,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:27,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1250534543, now seen corresponding path program 7 times [2022-11-20 09:28:27,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:27,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429753178] [2022-11-20 09:28:27,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:27,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:27,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:34,782 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:34,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:34,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429753178] [2022-11-20 09:28:34,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429753178] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:28:34,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732488032] [2022-11-20 09:28:34,783 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-20 09:28:34,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:28:34,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:28:34,784 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:28:34,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 09:28:34,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:34,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 78 conjunts are in the unsatisfiable core [2022-11-20 09:28:34,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:28:34,906 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 09:28:34,922 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 09:28:34,953 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 14 treesize of output 16 [2022-11-20 09:28:35,178 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 14 treesize of output 16 [2022-11-20 09:28:35,391 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 14 treesize of output 16 [2022-11-20 09:28:36,242 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 44 treesize of output 27 [2022-11-20 09:28:36,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:28:36,797 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 40 [2022-11-20 09:28:37,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:28:37,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:28:37,600 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 4 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 50 [2022-11-20 09:28:38,263 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:28:38,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:28:38,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:28:38,272 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 4 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 54 [2022-11-20 09:28:38,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:28:38,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:28:38,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:28:38,899 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:28:38,900 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 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 52 [2022-11-20 09:28:39,493 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 4 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 48 [2022-11-20 09:28:39,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 38 [2022-11-20 09:28:40,060 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:40,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:28:49,165 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 09:28:49,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 836 treesize of output 258 [2022-11-20 09:28:51,744 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse6 (* |c_ULTIMATE.start_main_~i~0#1| 4)) (.cse5 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) (.cse4 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|))) (and (forall ((v_arrayElimArr_4 (Array Int Int))) (or (not (= (select v_arrayElimArr_4 |c_ULTIMATE.start_main_~a~0#1.offset|) 4)) (< (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_arrayElimArr_4))) (let ((.cse3 (select .cse2 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse1 (select .cse3 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse0 (select (select (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 4))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5))) (+ .cse0 .cse1 (select (select (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse1 4))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse4)))))) (+ .cse6 1)) (not (= (select v_arrayElimArr_4 .cse5) 4)) (not (= (select v_arrayElimArr_4 .cse4) 4)))) (forall ((v_arrayElimArr_4 (Array Int Int))) (or (not (= (select v_arrayElimArr_4 |c_ULTIMATE.start_main_~a~0#1.offset|) 4)) (not (= (select v_arrayElimArr_4 .cse5) 4)) (< .cse6 (let ((.cse9 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_arrayElimArr_4))) (let ((.cse10 (select .cse9 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse8 (select .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse7 (select (select (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse8 4))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5))) (+ .cse7 .cse8 (select (select (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse7 .cse8 4))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse4) 1)))))) (not (= (select v_arrayElimArr_4 .cse4) 4)))))) is different from false [2022-11-20 09:28:54,331 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) (.cse1 (* |c_ULTIMATE.start_main_~i~0#1| 4)) (.cse6 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|))) (and (forall ((v_arrayElimArr_4 (Array Int Int))) (or (not (= (select v_arrayElimArr_4 |c_ULTIMATE.start_main_~a~0#1.offset|) 4)) (not (= (select v_arrayElimArr_4 .cse0) 4)) (< (+ .cse1 3) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_arrayElimArr_4))) (let ((.cse5 (select .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse3 (select .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse2 (select (select (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 4))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0))) (+ .cse2 .cse3 (select (select (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse2 .cse3 4))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6))))))) (not (= (select v_arrayElimArr_4 .cse6) 4)))) (forall ((v_arrayElimArr_4 (Array Int Int))) (or (not (= (select v_arrayElimArr_4 |c_ULTIMATE.start_main_~a~0#1.offset|) 4)) (not (= (select v_arrayElimArr_4 .cse0) 4)) (< (let ((.cse9 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_arrayElimArr_4))) (let ((.cse10 (select .cse9 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse8 (select .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse7 (select (select (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse8 4))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0))) (+ .cse7 .cse8 (select (select (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse7 .cse8 4))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6)))))) (+ 5 .cse1)) (not (= (select v_arrayElimArr_4 .cse6) 4)))))) is different from false [2022-11-20 09:28:57,118 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse6 (* |c_ULTIMATE.start_main_~i~0#1| 4)) (.cse4 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse5 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (and (forall ((v_arrayElimArr_4 (Array Int Int))) (or (< (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_arrayElimArr_4))) (let ((.cse3 (select .cse2 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse1 (select .cse3 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse0 (select (select (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 4))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5))) (+ .cse0 .cse1 (select (select (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse1 4))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse4)))))) (+ .cse6 9)) (not (= (select v_arrayElimArr_4 |c_ULTIMATE.start_main_~a~0#1.offset|) 4)) (not (= (select v_arrayElimArr_4 .cse5) 4)) (not (= (select v_arrayElimArr_4 .cse4) 4)))) (forall ((v_arrayElimArr_4 (Array Int Int))) (or (not (= (select v_arrayElimArr_4 |c_ULTIMATE.start_main_~a~0#1.offset|) 4)) (not (= (select v_arrayElimArr_4 .cse5) 4)) (not (= (select v_arrayElimArr_4 .cse4) 4)) (< (+ 7 .cse6) (let ((.cse9 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_arrayElimArr_4))) (let ((.cse10 (select .cse9 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse8 (select .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse7 (select (select (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse8 4))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5))) (+ .cse7 .cse8 (select (select (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse7 .cse8 4))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse4))))))))))) is different from false [2022-11-20 09:28:57,267 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 9 not checked. [2022-11-20 09:28:57,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732488032] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:28:57,268 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:28:57,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 24, 24] total 66 [2022-11-20 09:28:57,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714076052] [2022-11-20 09:28:57,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:28:57,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-11-20 09:28:57,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:57,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-11-20 09:28:57,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=503, Invalid=3412, Unknown=3, NotChecked=372, Total=4290 [2022-11-20 09:28:57,271 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand has 66 states, 66 states have (on average 1.3484848484848484) internal successors, (89), 66 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:21,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:30:21,588 INFO L93 Difference]: Finished difference Result 86 states and 98 transitions. [2022-11-20 09:30:21,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-20 09:30:21,588 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.3484848484848484) internal successors, (89), 66 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-11-20 09:30:21,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:30:21,589 INFO L225 Difference]: With dead ends: 86 [2022-11-20 09:30:21,589 INFO L226 Difference]: Without dead ends: 69 [2022-11-20 09:30:21,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 29 SyntacticMatches, 5 SemanticMatches, 77 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 2045 ImplicationChecksByTransitivity, 99.8s TimeCoverageRelationStatistics Valid=772, Invalid=4915, Unknown=25, NotChecked=450, Total=6162 [2022-11-20 09:30:21,593 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 66 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 1021 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 1343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 1021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 158 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-11-20 09:30:21,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 141 Invalid, 1343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 1021 Invalid, 0 Unknown, 158 Unchecked, 7.5s Time] [2022-11-20 09:30:21,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-11-20 09:30:21,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 52. [2022-11-20 09:30:21,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.1372549019607843) internal successors, (58), 51 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:21,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 58 transitions. [2022-11-20 09:30:21,606 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 58 transitions. Word has length 34 [2022-11-20 09:30:21,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:30:21,607 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 58 transitions. [2022-11-20 09:30:21,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 1.3484848484848484) internal successors, (89), 66 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:21,607 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 58 transitions. [2022-11-20 09:30:21,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-20 09:30:21,608 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:30:21,608 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:30:21,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 09:30:21,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-20 09:30:21,814 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:30:21,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:30:21,814 INFO L85 PathProgramCache]: Analyzing trace with hash 2033315503, now seen corresponding path program 2 times [2022-11-20 09:30:21,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:30:21,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150651383] [2022-11-20 09:30:21,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:21,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:30:21,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:23,322 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 09:30:23,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:30:23,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150651383] [2022-11-20 09:30:23,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150651383] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:30:23,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647831331] [2022-11-20 09:30:23,323 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:30:23,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:30:23,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:30:23,327 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:30:23,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 09:30:23,432 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 09:30:23,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:30:23,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-20 09:30:23,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:30:23,984 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 13 treesize of output 9 [2022-11-20 09:30:24,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:30:24,452 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 25 treesize of output 24 [2022-11-20 09:30:24,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:30:24,711 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 25 treesize of output 24 [2022-11-20 09:30:24,900 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-20 09:30:25,012 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 09:30:25,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:30:25,589 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2022-11-20 09:30:25,606 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 20 treesize of output 16 [2022-11-20 09:30:25,919 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 09:30:25,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647831331] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:30:25,919 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:30:25,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 27 [2022-11-20 09:30:25,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498111056] [2022-11-20 09:30:25,919 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:30:25,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-20 09:30:25,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:30:25,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-20 09:30:25,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=599, Unknown=0, NotChecked=0, Total=702 [2022-11-20 09:30:25,921 INFO L87 Difference]: Start difference. First operand 52 states and 58 transitions. Second operand has 27 states, 27 states have (on average 2.3333333333333335) internal successors, (63), 27 states have internal predecessors, (63), 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 09:30:29,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:30:29,334 INFO L93 Difference]: Finished difference Result 75 states and 84 transitions. [2022-11-20 09:30:29,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-20 09:30:29,334 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.3333333333333335) internal successors, (63), 27 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-11-20 09:30:29,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:30:29,335 INFO L225 Difference]: With dead ends: 75 [2022-11-20 09:30:29,335 INFO L226 Difference]: Without dead ends: 60 [2022-11-20 09:30:29,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=245, Invalid=1315, Unknown=0, NotChecked=0, Total=1560 [2022-11-20 09:30:29,336 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 56 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-20 09:30:29,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 79 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-20 09:30:29,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-11-20 09:30:29,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 53. [2022-11-20 09:30:29,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:29,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2022-11-20 09:30:29,358 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 34 [2022-11-20 09:30:29,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:30:29,359 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions. [2022-11-20 09:30:29,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.3333333333333335) internal successors, (63), 27 states have internal predecessors, (63), 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 09:30:29,359 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions. [2022-11-20 09:30:29,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 09:30:29,359 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:30:29,360 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:30:29,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 09:30:29,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:30:29,560 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:30:29,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:30:29,561 INFO L85 PathProgramCache]: Analyzing trace with hash 880380819, now seen corresponding path program 8 times [2022-11-20 09:30:29,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:30:29,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620304036] [2022-11-20 09:30:29,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:29,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:30:29,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:30,228 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 09:30:30,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:30:30,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620304036] [2022-11-20 09:30:30,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620304036] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:30:30,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283498956] [2022-11-20 09:30:30,229 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:30:30,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:30:30,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:30:30,231 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:30:30,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 09:30:30,337 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 09:30:30,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:30:30,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 09:30:30,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:30:31,291 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 09:30:31,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:30:31,877 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 09:30:31,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283498956] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:30:31,878 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:30:31,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2022-11-20 09:30:31,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559508190] [2022-11-20 09:30:31,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:30:31,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 09:30:31,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:30:31,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 09:30:31,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2022-11-20 09:30:31,883 INFO L87 Difference]: Start difference. First operand 53 states and 58 transitions. Second operand has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 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 09:30:32,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:30:32,982 INFO L93 Difference]: Finished difference Result 97 states and 106 transitions. [2022-11-20 09:30:32,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 09:30:32,983 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-11-20 09:30:32,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:30:32,984 INFO L225 Difference]: With dead ends: 97 [2022-11-20 09:30:32,984 INFO L226 Difference]: Without dead ends: 62 [2022-11-20 09:30:32,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 58 SyntacticMatches, 8 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2022-11-20 09:30:32,985 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 109 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 09:30:32,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 35 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-20 09:30:32,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-11-20 09:30:32,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 48. [2022-11-20 09:30:32,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.1063829787234043) internal successors, (52), 47 states have internal predecessors, (52), 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 09:30:32,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2022-11-20 09:30:33,000 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 36 [2022-11-20 09:30:33,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:30:33,000 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2022-11-20 09:30:33,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 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 09:30:33,001 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2022-11-20 09:30:33,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 09:30:33,001 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:30:33,001 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:30:33,006 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-11-20 09:30:33,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:30:33,206 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:30:33,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:30:33,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1466624367, now seen corresponding path program 9 times [2022-11-20 09:30:33,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:30:33,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139661633] [2022-11-20 09:30:33,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:33,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:30:33,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:33,909 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 24 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 09:30:33,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:30:33,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139661633] [2022-11-20 09:30:33,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139661633] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:30:33,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591624505] [2022-11-20 09:30:33,909 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 09:30:33,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:30:33,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:30:33,911 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:30:33,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-20 09:30:34,049 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-20 09:30:34,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:30:34,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 09:30:34,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:30:34,861 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 19 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 09:30:34,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:30:35,424 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 19 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 09:30:35,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591624505] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:30:35,425 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:30:35,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2022-11-20 09:30:35,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948926337] [2022-11-20 09:30:35,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:30:35,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 09:30:35,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:30:35,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 09:30:35,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2022-11-20 09:30:35,427 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 17 states have internal predecessors, (50), 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 09:30:37,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:30:37,060 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2022-11-20 09:30:37,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 09:30:37,061 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 17 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-11-20 09:30:37,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:30:37,062 INFO L225 Difference]: With dead ends: 57 [2022-11-20 09:30:37,062 INFO L226 Difference]: Without dead ends: 45 [2022-11-20 09:30:37,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 58 SyntacticMatches, 8 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2022-11-20 09:30:37,063 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 81 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:30:37,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 38 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-20 09:30:37,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-11-20 09:30:37,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2022-11-20 09:30:37,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.0975609756097562) internal successors, (45), 41 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:30:37,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2022-11-20 09:30:37,075 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 36 [2022-11-20 09:30:37,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:30:37,075 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2022-11-20 09:30:37,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 17 states have internal predecessors, (50), 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 09:30:37,075 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2022-11-20 09:30:37,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-20 09:30:37,076 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:30:37,076 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:30:37,083 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-11-20 09:30:37,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-20 09:30:37,282 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:30:37,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:30:37,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1118330549, now seen corresponding path program 10 times [2022-11-20 09:30:37,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:30:37,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22452620] [2022-11-20 09:30:37,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:30:37,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:30:37,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:30:50,197 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 09:30:50,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:30:50,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22452620] [2022-11-20 09:30:50,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22452620] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:30:50,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319213573] [2022-11-20 09:30:50,197 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 09:30:50,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:30:50,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:30:50,199 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:30:50,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-20 09:30:50,314 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 09:30:50,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:30:50,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 95 conjunts are in the unsatisfiable core [2022-11-20 09:30:50,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:30:50,339 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 09:30:50,367 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 09:30:50,655 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 14 treesize of output 16 [2022-11-20 09:30:51,080 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 14 treesize of output 16 [2022-11-20 09:30:51,519 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 14 treesize of output 16 [2022-11-20 09:30:51,912 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 14 treesize of output 16 [2022-11-20 09:30:53,141 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 44 treesize of output 27 [2022-11-20 09:30:54,355 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 42 [2022-11-20 09:30:55,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:30:55,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:30:55,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:30:55,686 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 4 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 49 [2022-11-20 09:30:57,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:30:57,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:30:57,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:30:57,197 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 59 [2022-11-20 09:30:58,387 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:30:58,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:30:58,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:30:58,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:30:58,402 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 63 [2022-11-20 09:30:59,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:30:59,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:30:59,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:30:59,448 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:30:59,450 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 66 [2022-11-20 09:31:00,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:31:00,612 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:31:00,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:31:00,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:31:00,626 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 71 [2022-11-20 09:31:01,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:31:01,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:31:01,825 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:31:01,826 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 57 [2022-11-20 09:31:03,475 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 36 [2022-11-20 09:31:03,888 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 9 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:31:03,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:31:39,278 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 09:31:39,279 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 2294 treesize of output 526 [2022-11-20 09:32:02,075 WARN L233 SmtUtils]: Spent 20.93s on a formula simplification that was a NOOP. DAG size: 59 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 09:32:26,080 WARN L233 SmtUtils]: Spent 19.65s on a formula simplification that was a NOOP. DAG size: 59 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 09:32:52,180 WARN L233 SmtUtils]: Spent 19.13s on a formula simplification that was a NOOP. DAG size: 59 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 09:33:20,330 WARN L233 SmtUtils]: Spent 18.97s on a formula simplification that was a NOOP. DAG size: 59 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 09:33:20,715 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 45 refuted. 9 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:33:20,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319213573] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:33:20,716 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:33:20,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 30, 30] total 86 [2022-11-20 09:33:20,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329823886] [2022-11-20 09:33:20,717 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:33:20,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2022-11-20 09:33:20,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:33:20,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2022-11-20 09:33:20,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=728, Invalid=6576, Unknown=6, NotChecked=0, Total=7310 [2022-11-20 09:33:20,721 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand has 86 states, 86 states have (on average 1.302325581395349) internal successors, (112), 86 states have internal predecessors, (112), 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 09:34:45,029 WARN L233 SmtUtils]: Spent 9.00s on a formula simplification. DAG size of input: 256 DAG size of output: 63 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 09:35:21,877 WARN L233 SmtUtils]: Spent 9.80s on a formula simplification. DAG size of input: 236 DAG size of output: 80 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 09:35:26,195 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse80 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (let ((.cse79 (+ .cse80 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse17 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse77 (+ .cse80 |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (let ((.cse47 (select .cse17 .cse77)) (.cse62 (select .cse17 .cse79)) (.cse44 (+ .cse80 8 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse41 (+ .cse80 12 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse46 (select .cse17 .cse44)) (.cse54 (store .cse17 .cse79 (+ 3 .cse62))) (.cse78 (+ .cse47 3))) (let ((.cse61 (store .cse54 .cse77 .cse78)) (.cse45 (+ 3 .cse46)) (.cse43 (select .cse17 .cse41))) (let ((.cse33 (store .cse17 .cse77 .cse78)) (.cse11 (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|)) (.cse42 (+ 3 .cse43)) (.cse18 (* c_~N~0 4)) (.cse14 (+ 12 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse15 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse16 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) (.cse70 (store .cse61 .cse44 .cse45))) (let ((.cse6 (= .cse18 (let ((.cse71 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse70))) (let ((.cse72 (select .cse71 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse73 (select .cse70 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse75 (select .cse72 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse74 (select (select (store .cse71 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse72 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse73 .cse75))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse16))) (let ((.cse76 (select (select (store .cse71 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse72 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse73 .cse74 .cse75))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse15))) (+ (select (select (store .cse71 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse72 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse73 .cse74 .cse75 .cse76))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse14) .cse73 .cse74 .cse75 .cse76)))))))) (.cse4 (= .cse18 (let ((.cse69 (store .cse70 .cse41 .cse42))) (let ((.cse67 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse69))) (let ((.cse68 (select .cse67 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse63 (select .cse69 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse64 (select .cse68 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse66 (select (select (store .cse67 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse68 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse63 .cse64))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse16))) (let ((.cse65 (select (select (store .cse67 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse68 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse63 .cse64 .cse66))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse15))) (+ .cse63 .cse64 .cse65 .cse66 (select (select (store .cse67 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse68 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse63 .cse64 .cse65 .cse66))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse14)))))))))) (.cse8 (select .cse11 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse1 (not (= .cse62 1))) (.cse9 (= .cse18 (let ((.cse56 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse61))) (let ((.cse57 (select .cse56 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse58 (select .cse61 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse60 (select .cse57 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse59 (select (select (store .cse56 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse57 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse58 .cse60))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse16))) (let ((.cse55 (select (select (store .cse56 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse57 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse58 .cse59 .cse60))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse15))) (+ .cse55 (select (select (store .cse56 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse57 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse55 .cse58 .cse59 .cse60))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse14) .cse58 .cse59 .cse60)))))))) (.cse26 (= .cse18 (let ((.cse51 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse54))) (let ((.cse52 (select .cse51 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse49 (select .cse52 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse53 (select .cse54 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse50 (select (select (store .cse51 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse52 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse49 .cse53))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse16))) (let ((.cse48 (select (select (store .cse51 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse52 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse49 .cse50 .cse53))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse15))) (+ .cse48 .cse49 .cse50 (select (select (store .cse51 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse52 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse48 .cse49 .cse50 .cse53))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse14) .cse53)))))))) (.cse7 (not (= |c_ULTIMATE.start_main_#t~mem8#1| 1))) (.cse0 (not (= .cse47 1))) (.cse2 (< 4 c_~N~0)) (.cse3 (not (= .cse46 1))) (.cse25 (store .cse33 .cse44 .cse45)) (.cse5 (not (= .cse43 1)))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4 .cse5) (or .cse6 .cse0 .cse1 .cse2 .cse3) (or .cse6 .cse0 .cse2 .cse3 .cse7) (= .cse8 0) (or .cse0 .cse2 .cse3 .cse7 .cse4 .cse5) (<= 3 |c_ULTIMATE.start_main_~i~0#1|) (or .cse0 .cse2 .cse9 .cse7) (or (= (let ((.cse13 (select .cse17 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse12 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse11 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse8 .cse13))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse16))) (let ((.cse10 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse11 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse8 .cse12 .cse13))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse15))) (+ .cse8 .cse10 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse11 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse8 .cse10 .cse12 .cse13))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse14) .cse12 .cse13)))) .cse18) .cse2) (not (= |c_ULTIMATE.start_main_~#sum~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (or .cse0 (= (let ((.cse22 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse25))) (let ((.cse23 (select .cse22 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse19 (select .cse23 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse21 (select .cse25 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse20 (select (select (store .cse22 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse23 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse19 .cse21))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse16))) (let ((.cse24 (select (select (store .cse22 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse23 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse19 .cse20 .cse21))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse15))) (+ .cse19 .cse20 .cse21 (select (select (store .cse22 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse23 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse19 .cse20 .cse21 .cse24))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse14) .cse24)))))) .cse18) .cse2 .cse3) (or .cse1 .cse26 .cse2) (or .cse0 .cse2 (= (let ((.cse28 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse33))) (let ((.cse29 (select .cse28 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse27 (select .cse29 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse31 (select .cse33 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse30 (select (select (store .cse28 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse29 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse27 .cse31))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse16))) (let ((.cse32 (select (select (store .cse28 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse29 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse27 .cse30 .cse31))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse15))) (+ .cse27 (select (select (store .cse28 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse29 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse27 .cse30 .cse31 .cse32))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse14) .cse30 .cse31 .cse32)))))) .cse18)) (or (= .cse8 .cse18) (< |c_ULTIMATE.start_main_~i~0#1| c_~N~0)) (or .cse0 .cse1 .cse2 .cse9) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (or .cse26 .cse2 .cse7) (<= 4 c_~N~0) (or .cse0 .cse2 .cse3 (= (let ((.cse40 (store .cse25 .cse41 .cse42))) (let ((.cse37 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse40))) (let ((.cse38 (select .cse37 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse34 (select .cse38 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse35 (select .cse40 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse39 (select (select (store .cse37 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse38 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse34 .cse35))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse16))) (let ((.cse36 (select (select (store .cse37 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse38 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse34 .cse35 .cse39))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse15))) (+ .cse34 .cse35 .cse36 (select (select (store .cse37 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse38 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse34 .cse35 .cse36 .cse39))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse14) .cse39))))))) .cse18) .cse5))))))))) is different from true [2022-11-20 09:35:58,139 WARN L233 SmtUtils]: Spent 8.63s on a formula simplification that was a NOOP. DAG size: 125 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 09:37:16,232 WARN L233 SmtUtils]: Spent 51.64s on a formula simplification. DAG size of input: 154 DAG size of output: 150 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 09:37:44,581 WARN L233 SmtUtils]: Spent 8.88s on a formula simplification that was a NOOP. DAG size: 125 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 09:38:19,850 WARN L233 SmtUtils]: Spent 6.72s on a formula simplification. DAG size of input: 196 DAG size of output: 66 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 09:38:25,072 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:38:45,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 09:39:25,075 WARN L233 SmtUtils]: Spent 20.84s on a formula simplification that was a NOOP. DAG size: 134 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 09:40:42,631 WARN L233 SmtUtils]: Spent 34.03s on a formula simplification. DAG size of input: 177 DAG size of output: 129 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 09:41:23,450 WARN L233 SmtUtils]: Spent 8.31s on a formula simplification that was a NOOP. DAG size: 105 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 09:41:49,945 WARN L233 SmtUtils]: Spent 10.51s on a formula simplification. DAG size of input: 125 DAG size of output: 101 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 09:42:11,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:42:11,260 INFO L93 Difference]: Finished difference Result 153 states and 183 transitions. [2022-11-20 09:42:11,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-11-20 09:42:11,272 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 1.302325581395349) internal successors, (112), 86 states have internal predecessors, (112), 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 41 [2022-11-20 09:42:11,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:42:11,272 INFO L225 Difference]: With dead ends: 153 [2022-11-20 09:42:11,272 INFO L226 Difference]: Without dead ends: 132 [2022-11-20 09:42:11,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 153 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 6662 ImplicationChecksByTransitivity, 621.3s TimeCoverageRelationStatistics Valid=2273, Invalid=21285, Unknown=8, NotChecked=304, Total=23870 [2022-11-20 09:42:11,278 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 251 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 1508 mSolverCounterSat, 423 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 56.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 2272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 423 IncrementalHoareTripleChecker+Valid, 1508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 341 IncrementalHoareTripleChecker+Unchecked, 57.9s IncrementalHoareTripleChecker+Time [2022-11-20 09:42:11,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 139 Invalid, 2272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [423 Valid, 1508 Invalid, 0 Unknown, 341 Unchecked, 57.9s Time] [2022-11-20 09:42:11,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-11-20 09:42:11,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 80. [2022-11-20 09:42:11,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.240506329113924) internal successors, (98), 79 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:42:11,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 98 transitions. [2022-11-20 09:42:11,308 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 98 transitions. Word has length 41 [2022-11-20 09:42:11,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:42:11,309 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 98 transitions. [2022-11-20 09:42:11,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 1.302325581395349) internal successors, (112), 86 states have internal predecessors, (112), 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 09:42:11,310 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 98 transitions. [2022-11-20 09:42:11,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-20 09:42:11,311 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:42:11,311 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:42:11,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-20 09:42:11,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-20 09:42:11,518 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:42:11,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:42:11,519 INFO L85 PathProgramCache]: Analyzing trace with hash 97262195, now seen corresponding path program 3 times [2022-11-20 09:42:11,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:42:11,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702911592] [2022-11-20 09:42:11,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:42:11,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:42:11,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:42:13,155 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 7 proven. 31 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 09:42:13,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:42:13,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702911592] [2022-11-20 09:42:13,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702911592] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:42:13,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265570630] [2022-11-20 09:42:13,155 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 09:42:13,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:42:13,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:42:13,157 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:42:13,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f59ff21-5f12-4d45-adc0-1c1dc9d39967/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-20 09:42:13,328 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-20 09:42:13,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:42:13,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-20 09:42:13,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:42:13,989 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-20 09:42:15,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:42:15,271 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 27 treesize of output 26 [2022-11-20 09:42:15,864 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-20 09:42:15,864 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 30 [2022-11-20 09:42:16,605 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-20 09:42:16,605 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 47