./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-acceleration/phases_1-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30e1c3a-bf6b-4028-81db-47a93a4ed7cd/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30e1c3a-bf6b-4028-81db-47a93a4ed7cd/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30e1c3a-bf6b-4028-81db-47a93a4ed7cd/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30e1c3a-bf6b-4028-81db-47a93a4ed7cd/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-acceleration/phases_1-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30e1c3a-bf6b-4028-81db-47a93a4ed7cd/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30e1c3a-bf6b-4028-81db-47a93a4ed7cd/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4f868671c12bae02e06798527bc7c1ed7b8332d3fee83b3ff24f9cd503da0a60 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 19:46:55,262 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 19:46:55,264 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 19:46:55,295 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 19:46:55,296 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 19:46:55,297 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 19:46:55,299 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 19:46:55,301 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 19:46:55,303 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 19:46:55,304 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 19:46:55,306 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 19:46:55,307 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 19:46:55,308 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 19:46:55,309 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 19:46:55,310 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 19:46:55,312 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 19:46:55,313 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 19:46:55,314 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 19:46:55,316 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 19:46:55,318 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 19:46:55,320 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 19:46:55,321 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 19:46:55,323 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 19:46:55,324 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 19:46:55,327 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 19:46:55,328 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 19:46:55,328 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 19:46:55,329 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 19:46:55,330 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 19:46:55,331 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 19:46:55,331 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 19:46:55,332 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 19:46:55,333 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 19:46:55,333 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 19:46:55,335 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 19:46:55,335 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 19:46:55,335 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 19:46:55,336 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 19:46:55,336 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 19:46:55,337 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 19:46:55,337 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 19:46:55,338 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30e1c3a-bf6b-4028-81db-47a93a4ed7cd/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 19:46:55,361 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 19:46:55,361 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 19:46:55,362 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 19:46:55,362 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 19:46:55,363 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 19:46:55,363 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 19:46:55,363 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 19:46:55,364 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 19:46:55,364 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 19:46:55,364 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 19:46:55,364 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 19:46:55,364 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 19:46:55,365 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 19:46:55,365 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 19:46:55,365 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 19:46:55,365 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 19:46:55,365 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 19:46:55,366 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 19:46:55,366 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 19:46:55,366 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 19:46:55,366 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 19:46:55,366 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 19:46:55,367 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 19:46:55,367 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 19:46:55,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 19:46:55,367 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 19:46:55,367 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 19:46:55,368 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 19:46:55,368 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 19:46:55,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 19:46:55,368 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 19:46:55,368 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 19:46:55,369 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 19:46:55,369 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 19:46:55,369 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_e30e1c3a-bf6b-4028-81db-47a93a4ed7cd/bin/uautomizer-DrprNOufMa/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30e1c3a-bf6b-4028-81db-47a93a4ed7cd/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f868671c12bae02e06798527bc7c1ed7b8332d3fee83b3ff24f9cd503da0a60 [2021-12-06 19:46:55,572 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 19:46:55,588 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 19:46:55,590 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 19:46:55,591 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 19:46:55,591 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 19:46:55,592 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30e1c3a-bf6b-4028-81db-47a93a4ed7cd/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/loop-acceleration/phases_1-2.c [2021-12-06 19:46:55,640 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30e1c3a-bf6b-4028-81db-47a93a4ed7cd/bin/uautomizer-DrprNOufMa/data/dc53a3c63/2a5cd2df62ca4b1ebe757dac9591a060/FLAG0ab1f2266 [2021-12-06 19:46:56,010 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 19:46:56,011 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30e1c3a-bf6b-4028-81db-47a93a4ed7cd/sv-benchmarks/c/loop-acceleration/phases_1-2.c [2021-12-06 19:46:56,014 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30e1c3a-bf6b-4028-81db-47a93a4ed7cd/bin/uautomizer-DrprNOufMa/data/dc53a3c63/2a5cd2df62ca4b1ebe757dac9591a060/FLAG0ab1f2266 [2021-12-06 19:46:56,026 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30e1c3a-bf6b-4028-81db-47a93a4ed7cd/bin/uautomizer-DrprNOufMa/data/dc53a3c63/2a5cd2df62ca4b1ebe757dac9591a060 [2021-12-06 19:46:56,028 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 19:46:56,029 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 19:46:56,031 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 19:46:56,031 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 19:46:56,034 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 19:46:56,034 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:46:56" (1/1) ... [2021-12-06 19:46:56,035 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14806e4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:46:56, skipping insertion in model container [2021-12-06 19:46:56,035 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:46:56" (1/1) ... [2021-12-06 19:46:56,042 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 19:46:56,051 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 19:46:56,180 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30e1c3a-bf6b-4028-81db-47a93a4ed7cd/sv-benchmarks/c/loop-acceleration/phases_1-2.c[322,335] [2021-12-06 19:46:56,190 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:46:56,196 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 19:46:56,205 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30e1c3a-bf6b-4028-81db-47a93a4ed7cd/sv-benchmarks/c/loop-acceleration/phases_1-2.c[322,335] [2021-12-06 19:46:56,207 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:46:56,216 INFO L208 MainTranslator]: Completed translation [2021-12-06 19:46:56,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:46:56 WrapperNode [2021-12-06 19:46:56,217 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 19:46:56,217 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 19:46:56,218 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 19:46:56,218 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 19:46:56,223 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:46:56" (1/1) ... [2021-12-06 19:46:56,227 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:46:56" (1/1) ... [2021-12-06 19:46:56,239 INFO L137 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 27 [2021-12-06 19:46:56,239 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 19:46:56,240 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 19:46:56,240 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 19:46:56,240 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 19:46:56,246 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:46:56" (1/1) ... [2021-12-06 19:46:56,246 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:46:56" (1/1) ... [2021-12-06 19:46:56,247 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:46:56" (1/1) ... [2021-12-06 19:46:56,247 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:46:56" (1/1) ... [2021-12-06 19:46:56,249 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:46:56" (1/1) ... [2021-12-06 19:46:56,251 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:46:56" (1/1) ... [2021-12-06 19:46:56,252 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:46:56" (1/1) ... [2021-12-06 19:46:56,253 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 19:46:56,253 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 19:46:56,253 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 19:46:56,253 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 19:46:56,254 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:46:56" (1/1) ... [2021-12-06 19:46:56,259 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 19:46:56,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30e1c3a-bf6b-4028-81db-47a93a4ed7cd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:46:56,277 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30e1c3a-bf6b-4028-81db-47a93a4ed7cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 19:46:56,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30e1c3a-bf6b-4028-81db-47a93a4ed7cd/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 19:46:56,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 19:46:56,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 19:46:56,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 19:46:56,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 19:46:56,349 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 19:46:56,350 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 19:46:56,408 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 19:46:56,412 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 19:46:56,412 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 19:46:56,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:46:56 BoogieIcfgContainer [2021-12-06 19:46:56,413 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 19:46:56,415 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 19:46:56,415 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 19:46:56,417 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 19:46:56,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 07:46:56" (1/3) ... [2021-12-06 19:46:56,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13320e4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:46:56, skipping insertion in model container [2021-12-06 19:46:56,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:46:56" (2/3) ... [2021-12-06 19:46:56,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13320e4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:46:56, skipping insertion in model container [2021-12-06 19:46:56,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:46:56" (3/3) ... [2021-12-06 19:46:56,420 INFO L111 eAbstractionObserver]: Analyzing ICFG phases_1-2.c [2021-12-06 19:46:56,424 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 19:46:56,424 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 19:46:56,459 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 19:46:56,465 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 19:46:56,465 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 19:46:56,475 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:46:56,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-06 19:46:56,479 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:46:56,480 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-06 19:46:56,480 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:46:56,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:46:56,484 INFO L85 PathProgramCache]: Analyzing trace with hash 889937703, now seen corresponding path program 1 times [2021-12-06 19:46:56,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:46:56,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690853999] [2021-12-06 19:46:56,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:46:56,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:46:56,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:56,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:46:56,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:46:56,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690853999] [2021-12-06 19:46:56,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690853999] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:46:56,588 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:46:56,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 19:46:56,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989647714] [2021-12-06 19:46:56,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:46:56,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 19:46:56,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:46:56,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 19:46:56,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 19:46:56,627 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 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 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:46:56,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:46:56,640 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2021-12-06 19:46:56,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 19:46:56,642 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2021-12-06 19:46:56,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:46:56,647 INFO L225 Difference]: With dead ends: 20 [2021-12-06 19:46:56,647 INFO L226 Difference]: Without dead ends: 8 [2021-12-06 19:46:56,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 19:46:56,654 INFO L933 BasicCegarLoop]: 13 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, 13 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:46:56,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:46:56,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-12-06 19:46:56,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-12-06 19:46:56,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:46:56,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2021-12-06 19:46:56,686 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 6 [2021-12-06 19:46:56,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:46:56,686 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2021-12-06 19:46:56,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:46:56,686 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2021-12-06 19:46:56,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-06 19:46:56,687 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:46:56,687 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-06 19:46:56,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 19:46:56,688 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:46:56,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:46:56,689 INFO L85 PathProgramCache]: Analyzing trace with hash 889639793, now seen corresponding path program 1 times [2021-12-06 19:46:56,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:46:56,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94619768] [2021-12-06 19:46:56,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:46:56,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:46:56,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:56,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:46:56,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:46:56,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94619768] [2021-12-06 19:46:56,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94619768] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:46:56,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:46:56,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 19:46:56,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362787138] [2021-12-06 19:46:56,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:46:56,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 19:46:56,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:46:56,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 19:46:56,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:46:56,769 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:46:56,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:46:56,783 INFO L93 Difference]: Finished difference Result 16 states and 20 transitions. [2021-12-06 19:46:56,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 19:46:56,784 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2021-12-06 19:46:56,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:46:56,784 INFO L225 Difference]: With dead ends: 16 [2021-12-06 19:46:56,784 INFO L226 Difference]: Without dead ends: 10 [2021-12-06 19:46:56,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:46:56,786 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 1 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:46:56,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 10 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:46:56,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-12-06 19:46:56,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-12-06 19:46:56,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:46:56,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2021-12-06 19:46:56,789 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 6 [2021-12-06 19:46:56,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:46:56,790 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2021-12-06 19:46:56,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:46:56,790 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2021-12-06 19:46:56,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-06 19:46:56,790 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:46:56,790 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:46:56,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 19:46:56,791 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:46:56,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:46:56,791 INFO L85 PathProgramCache]: Analyzing trace with hash 295691924, now seen corresponding path program 1 times [2021-12-06 19:46:56,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:46:56,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841276338] [2021-12-06 19:46:56,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:46:56,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:46:56,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:56,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:46:56,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:46:56,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841276338] [2021-12-06 19:46:56,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841276338] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:46:56,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322082609] [2021-12-06 19:46:56,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:46:56,848 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:46:56,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30e1c3a-bf6b-4028-81db-47a93a4ed7cd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:46:56,849 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30e1c3a-bf6b-4028-81db-47a93a4ed7cd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:46:56,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30e1c3a-bf6b-4028-81db-47a93a4ed7cd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 19:46:56,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:56,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 19:46:56,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:46:56,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:46:56,918 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:46:56,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:46:56,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322082609] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:46:56,949 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:46:56,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-12-06 19:46:56,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870222672] [2021-12-06 19:46:56,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:46:56,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:46:56,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:46:56,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:46:56,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:46:56,951 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:46:57,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:46:57,016 INFO L93 Difference]: Finished difference Result 20 states and 26 transitions. [2021-12-06 19:46:57,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 19:46:57,016 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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 8 [2021-12-06 19:46:57,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:46:57,021 INFO L225 Difference]: With dead ends: 20 [2021-12-06 19:46:57,021 INFO L226 Difference]: Without dead ends: 14 [2021-12-06 19:46:57,021 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:46:57,022 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 3 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:46:57,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 21 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:46:57,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-12-06 19:46:57,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2021-12-06 19:46:57,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:46:57,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2021-12-06 19:46:57,026 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 8 [2021-12-06 19:46:57,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:46:57,026 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2021-12-06 19:46:57,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:46:57,026 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2021-12-06 19:46:57,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-06 19:46:57,027 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:46:57,027 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:46:57,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30e1c3a-bf6b-4028-81db-47a93a4ed7cd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 19:46:57,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30e1c3a-bf6b-4028-81db-47a93a4ed7cd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:46:57,229 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:46:57,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:46:57,231 INFO L85 PathProgramCache]: Analyzing trace with hash 572634524, now seen corresponding path program 1 times [2021-12-06 19:46:57,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:46:57,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582441955] [2021-12-06 19:46:57,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:46:57,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:46:57,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:57,411 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:46:57,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:46:57,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582441955] [2021-12-06 19:46:57,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582441955] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:46:57,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587875840] [2021-12-06 19:46:57,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:46:57,412 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:46:57,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30e1c3a-bf6b-4028-81db-47a93a4ed7cd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:46:57,413 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30e1c3a-bf6b-4028-81db-47a93a4ed7cd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:46:57,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30e1c3a-bf6b-4028-81db-47a93a4ed7cd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 19:46:57,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:57,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-06 19:46:57,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:46:57,562 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:46:57,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:46:57,611 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 19:46:57,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587875840] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:46:57,612 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:46:57,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 5] total 10 [2021-12-06 19:46:57,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772647348] [2021-12-06 19:46:57,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:46:57,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 19:46:57,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:46:57,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 19:46:57,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-12-06 19:46:57,614 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:46:57,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:46:57,671 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2021-12-06 19:46:57,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 19:46:57,672 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-12-06 19:46:57,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:46:57,672 INFO L225 Difference]: With dead ends: 27 [2021-12-06 19:46:57,672 INFO L226 Difference]: Without dead ends: 18 [2021-12-06 19:46:57,673 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-12-06 19:46:57,674 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 5 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:46:57,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 23 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:46:57,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-12-06 19:46:57,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2021-12-06 19:46:57,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:46:57,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-12-06 19:46:57,677 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 12 [2021-12-06 19:46:57,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:46:57,678 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-12-06 19:46:57,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:46:57,678 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-12-06 19:46:57,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-06 19:46:57,678 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:46:57,678 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:46:57,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30e1c3a-bf6b-4028-81db-47a93a4ed7cd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-06 19:46:57,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30e1c3a-bf6b-4028-81db-47a93a4ed7cd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:46:57,880 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:46:57,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:46:57,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1176853889, now seen corresponding path program 2 times [2021-12-06 19:46:57,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:46:57,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939476463] [2021-12-06 19:46:57,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:46:57,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:46:57,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:58,171 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:46:58,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:46:58,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939476463] [2021-12-06 19:46:58,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939476463] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:46:58,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884830908] [2021-12-06 19:46:58,174 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 19:46:58,175 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:46:58,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30e1c3a-bf6b-4028-81db-47a93a4ed7cd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:46:58,177 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30e1c3a-bf6b-4028-81db-47a93a4ed7cd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:46:58,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30e1c3a-bf6b-4028-81db-47a93a4ed7cd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 19:46:58,246 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 19:46:58,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:46:58,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 19:46:58,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:46:58,296 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:46:58,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:46:58,382 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:46:58,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884830908] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:46:58,383 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:46:58,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 12 [2021-12-06 19:46:58,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603319631] [2021-12-06 19:46:58,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:46:58,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 19:46:58,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:46:58,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 19:46:58,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2021-12-06 19:46:58,385 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:46:58,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:46:58,605 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2021-12-06 19:46:58,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 19:46:58,606 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-12-06 19:46:58,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:46:58,606 INFO L225 Difference]: With dead ends: 36 [2021-12-06 19:46:58,606 INFO L226 Difference]: Without dead ends: 27 [2021-12-06 19:46:58,607 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=141, Unknown=0, NotChecked=0, Total=240 [2021-12-06 19:46:58,608 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 20 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:46:58,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 21 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:46:58,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-12-06 19:46:58,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-12-06 19:46:58,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:46:58,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2021-12-06 19:46:58,613 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 14 [2021-12-06 19:46:58,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:46:58,613 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2021-12-06 19:46:58,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:46:58,614 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2021-12-06 19:46:58,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-06 19:46:58,614 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:46:58,614 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:46:58,634 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30e1c3a-bf6b-4028-81db-47a93a4ed7cd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 19:46:58,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30e1c3a-bf6b-4028-81db-47a93a4ed7cd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:46:58,817 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:46:58,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:46:58,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1990618095, now seen corresponding path program 3 times [2021-12-06 19:46:58,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:46:58,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970139824] [2021-12-06 19:46:58,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:46:58,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:46:58,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:58,970 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 10 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:46:58,970 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:46:58,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970139824] [2021-12-06 19:46:58,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970139824] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:46:58,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919838408] [2021-12-06 19:46:58,971 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 19:46:58,971 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:46:58,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30e1c3a-bf6b-4028-81db-47a93a4ed7cd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:46:58,972 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30e1c3a-bf6b-4028-81db-47a93a4ed7cd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:46:58,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30e1c3a-bf6b-4028-81db-47a93a4ed7cd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 19:46:59,067 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-12-06 19:46:59,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:46:59,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-06 19:46:59,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:46:59,131 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-12-06 19:46:59,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:46:59,344 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-12-06 19:46:59,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1919838408] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:46:59,345 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:46:59,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 4, 7] total 19 [2021-12-06 19:46:59,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549079871] [2021-12-06 19:46:59,346 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:46:59,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-06 19:46:59,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:46:59,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-06 19:46:59,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2021-12-06 19:46:59,347 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand has 19 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 19 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:46:59,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:46:59,601 INFO L93 Difference]: Finished difference Result 55 states and 70 transitions. [2021-12-06 19:46:59,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-06 19:46:59,601 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 19 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-12-06 19:46:59,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:46:59,603 INFO L225 Difference]: With dead ends: 55 [2021-12-06 19:46:59,603 INFO L226 Difference]: Without dead ends: 44 [2021-12-06 19:46:59,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2021-12-06 19:46:59,604 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 42 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:46:59,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 20 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 19:46:59,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-12-06 19:46:59,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2021-12-06 19:46:59,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.15) internal successors, (46), 40 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:46:59,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2021-12-06 19:46:59,610 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 26 [2021-12-06 19:46:59,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:46:59,610 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2021-12-06 19:46:59,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 19 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:46:59,610 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2021-12-06 19:46:59,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-06 19:46:59,611 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:46:59,611 INFO L514 BasicCegarLoop]: trace histogram [15, 11, 4, 1, 1, 1, 1, 1, 1] [2021-12-06 19:46:59,614 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30e1c3a-bf6b-4028-81db-47a93a4ed7cd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 19:46:59,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30e1c3a-bf6b-4028-81db-47a93a4ed7cd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:46:59,813 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:46:59,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:46:59,815 INFO L85 PathProgramCache]: Analyzing trace with hash 2051424454, now seen corresponding path program 4 times [2021-12-06 19:46:59,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:46:59,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685342683] [2021-12-06 19:46:59,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:46:59,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:46:59,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:00,012 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 84 proven. 132 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-06 19:47:00,012 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:47:00,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685342683] [2021-12-06 19:47:00,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685342683] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:47:00,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39951174] [2021-12-06 19:47:00,013 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 19:47:00,013 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:47:00,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30e1c3a-bf6b-4028-81db-47a93a4ed7cd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:47:00,014 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30e1c3a-bf6b-4028-81db-47a93a4ed7cd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:47:00,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30e1c3a-bf6b-4028-81db-47a93a4ed7cd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 19:47:00,042 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 19:47:00,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:47:00,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 30 conjunts are in the unsatisfiable core [2021-12-06 19:47:00,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:47:00,173 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 42 proven. 182 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:47:00,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:47:00,817 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 42 proven. 182 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:47:00,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39951174] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:47:00,817 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:47:00,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 17] total 32 [2021-12-06 19:47:00,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759413513] [2021-12-06 19:47:00,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:47:00,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-12-06 19:47:00,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:47:00,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-12-06 19:47:00,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=693, Unknown=0, NotChecked=0, Total=992 [2021-12-06 19:47:00,820 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand has 32 states, 32 states have (on average 2.125) internal successors, (68), 32 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:47:15,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:47:15,886 INFO L93 Difference]: Finished difference Result 92 states and 118 transitions. [2021-12-06 19:47:15,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-12-06 19:47:15,886 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.125) internal successors, (68), 32 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-12-06 19:47:15,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:47:15,887 INFO L225 Difference]: With dead ends: 92 [2021-12-06 19:47:15,887 INFO L226 Difference]: Without dead ends: 73 [2021-12-06 19:47:15,888 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 15.4s TimeCoverageRelationStatistics Valid=747, Invalid=1323, Unknown=0, NotChecked=0, Total=2070 [2021-12-06 19:47:15,888 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 68 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 19:47:15,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 34 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 19:47:15,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-12-06 19:47:15,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-12-06 19:47:15,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.0833333333333333) internal successors, (78), 72 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:47:15,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 78 transitions. [2021-12-06 19:47:15,896 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 78 transitions. Word has length 36 [2021-12-06 19:47:15,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:47:15,896 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 78 transitions. [2021-12-06 19:47:15,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.125) internal successors, (68), 32 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:47:15,896 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 78 transitions. [2021-12-06 19:47:15,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-06 19:47:15,898 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:47:15,898 INFO L514 BasicCegarLoop]: trace histogram [31, 27, 4, 1, 1, 1, 1, 1, 1] [2021-12-06 19:47:15,917 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30e1c3a-bf6b-4028-81db-47a93a4ed7cd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 19:47:16,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30e1c3a-bf6b-4028-81db-47a93a4ed7cd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:47:16,100 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:47:16,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:47:16,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1213758218, now seen corresponding path program 5 times [2021-12-06 19:47:16,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:47:16,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919364870] [2021-12-06 19:47:16,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:47:16,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:47:16,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:16,487 INFO L134 CoverageAnalysis]: Checked inductivity of 961 backedges. 196 proven. 756 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-06 19:47:16,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:47:16,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919364870] [2021-12-06 19:47:16,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919364870] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:47:16,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743221715] [2021-12-06 19:47:16,488 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 19:47:16,488 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:47:16,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30e1c3a-bf6b-4028-81db-47a93a4ed7cd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:47:16,489 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30e1c3a-bf6b-4028-81db-47a93a4ed7cd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:47:16,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30e1c3a-bf6b-4028-81db-47a93a4ed7cd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 19:47:21,961 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2021-12-06 19:47:21,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:47:21,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 60 conjunts are in the unsatisfiable core [2021-12-06 19:47:21,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:47:22,155 INFO L134 CoverageAnalysis]: Checked inductivity of 961 backedges. 145 proven. 812 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 19:47:22,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:47:23,997 INFO L134 CoverageAnalysis]: Checked inductivity of 961 backedges. 145 proven. 812 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 19:47:23,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743221715] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:47:23,997 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:47:23,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 31, 32] total 62 [2021-12-06 19:47:23,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016132566] [2021-12-06 19:47:23,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:47:23,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2021-12-06 19:47:23,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:47:23,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2021-12-06 19:47:24,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1050, Invalid=2732, Unknown=0, NotChecked=0, Total=3782 [2021-12-06 19:47:24,001 INFO L87 Difference]: Start difference. First operand 73 states and 78 transitions. Second operand has 62 states, 62 states have (on average 2.064516129032258) internal successors, (128), 62 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:47:26,478 WARN L838 $PredicateComparison]: unable to prove that (and (let ((.cse0 (mod (+ 23 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (<= 268435455 .cse0) (< .cse0 65521))) (let ((.cse1 (mod (+ 21 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (< .cse1 65521) (<= 268435455 .cse1))) (let ((.cse2 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 10) 4294967296))) (or (<= 268435455 .cse2) (< .cse2 65521))) (let ((.cse3 (mod (+ 16 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (<= 268435455 .cse3) (< .cse3 65521))) (let ((.cse4 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 8) 4294967296))) (or (< .cse4 65521) (<= 268435455 .cse4))) (let ((.cse5 (mod (+ 14 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (< .cse5 65521) (<= 268435455 .cse5))) (let ((.cse6 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 17) 4294967296))) (or (<= 268435455 .cse6) (< .cse6 65521))) (let ((.cse7 (mod (+ 9 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (<= 268435455 .cse7) (< .cse7 65521))) (let ((.cse8 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 20) 4294967296))) (or (<= 268435455 .cse8) (< .cse8 65521))) (let ((.cse9 (mod (+ 29 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (< .cse9 65521) (<= 268435455 .cse9))) (let ((.cse10 (mod (+ 2 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (<= 268435455 .cse10) (< .cse10 65521))) (let ((.cse11 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 12) 4294967296))) (or (< .cse11 65521) (<= 268435455 .cse11))) (let ((.cse12 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 4) 4294967296))) (or (<= 268435455 .cse12) (< .cse12 65521))) (let ((.cse13 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 11) 4294967296))) (or (< .cse13 65521) (<= 268435455 .cse13))) (let ((.cse14 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 15) 4294967296))) (or (< .cse14 65521) (<= 268435455 .cse14))) (let ((.cse15 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 25) 4294967296))) (or (< .cse15 65521) (<= 268435455 .cse15))) (let ((.cse16 (mod (+ 22 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (<= 268435455 .cse16) (< .cse16 65521))) (let ((.cse17 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 24) 4294967296))) (or (<= 268435455 .cse17) (< .cse17 65521))) (let ((.cse18 (mod (+ 3 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (<= 268435455 .cse18) (< .cse18 65521))) (let ((.cse19 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 13) 4294967296))) (or (<= 268435455 .cse19) (< .cse19 65521))) (let ((.cse20 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 27) 4294967296))) (or (<= 268435455 .cse20) (< .cse20 65521))) (let ((.cse21 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 28) 4294967296))) (or (< .cse21 65521) (<= 268435455 .cse21))) (let ((.cse22 (mod (+ 19 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (< .cse22 65521) (<= 268435455 .cse22))) (< (mod |c_ULTIMATE.start_main_~x~0#1| 4294967296) 65521) (let ((.cse23 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 26) 4294967296))) (or (< .cse23 65521) (<= 268435455 .cse23))) (let ((.cse24 (mod (+ 7 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (< .cse24 65521) (<= 268435455 .cse24))) (let ((.cse25 (mod (+ 6 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (<= 268435455 .cse25) (< .cse25 65521))) (let ((.cse26 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 18) 4294967296))) (or (<= 268435455 .cse26) (< .cse26 65521))) (let ((.cse27 (mod (+ 5 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (< .cse27 65521) (<= 268435455 .cse27)))) is different from false [2021-12-06 19:48:00,523 WARN L227 SmtUtils]: Spent 17.20s on a formula simplification. DAG size of input: 167 DAG size of output: 17 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 19:48:02,984 WARN L838 $PredicateComparison]: unable to prove that (and (let ((.cse0 (mod (+ 23 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (<= 268435455 .cse0) (< .cse0 65521))) (let ((.cse1 (mod (+ 21 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (< .cse1 65521) (<= 268435455 .cse1))) (let ((.cse2 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 10) 4294967296))) (or (<= 268435455 .cse2) (< .cse2 65521))) (let ((.cse3 (mod (+ 16 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (<= 268435455 .cse3) (< .cse3 65521))) (let ((.cse4 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 8) 4294967296))) (or (< .cse4 65521) (<= 268435455 .cse4))) (let ((.cse5 (mod (+ 14 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (< .cse5 65521) (<= 268435455 .cse5))) (let ((.cse6 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 17) 4294967296))) (or (<= 268435455 .cse6) (< .cse6 65521))) (let ((.cse7 (mod (+ 9 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (<= 268435455 .cse7) (< .cse7 65521))) (let ((.cse8 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 20) 4294967296))) (or (<= 268435455 .cse8) (< .cse8 65521))) (let ((.cse9 (mod (+ 29 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (< .cse9 65521) (<= 268435455 .cse9))) (let ((.cse10 (mod (+ 2 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (<= 268435455 .cse10) (< .cse10 65521))) (let ((.cse11 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 12) 4294967296))) (or (< .cse11 65521) (<= 268435455 .cse11))) (let ((.cse12 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 4) 4294967296))) (or (<= 268435455 .cse12) (< .cse12 65521))) (let ((.cse13 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 11) 4294967296))) (or (< .cse13 65521) (<= 268435455 .cse13))) (let ((.cse14 (mod |c_ULTIMATE.start_main_~x~0#1| 4294967296))) (or (<= 268435455 .cse14) (< .cse14 65521))) (let ((.cse15 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 15) 4294967296))) (or (< .cse15 65521) (<= 268435455 .cse15))) (let ((.cse16 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 25) 4294967296))) (or (< .cse16 65521) (<= 268435455 .cse16))) (let ((.cse17 (mod (+ 22 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (<= 268435455 .cse17) (< .cse17 65521))) (let ((.cse18 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 24) 4294967296))) (or (<= 268435455 .cse18) (< .cse18 65521))) (let ((.cse19 (mod (+ 3 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (<= 268435455 .cse19) (< .cse19 65521))) (let ((.cse20 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 13) 4294967296))) (or (<= 268435455 .cse20) (< .cse20 65521))) (let ((.cse21 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 27) 4294967296))) (or (<= 268435455 .cse21) (< .cse21 65521))) (let ((.cse22 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 28) 4294967296))) (or (< .cse22 65521) (<= 268435455 .cse22))) (let ((.cse23 (mod (+ 19 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (< .cse23 65521) (<= 268435455 .cse23))) (let ((.cse24 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 26) 4294967296))) (or (< .cse24 65521) (<= 268435455 .cse24))) (let ((.cse25 (mod (+ 7 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (< .cse25 65521) (<= 268435455 .cse25))) (let ((.cse26 (mod (+ 6 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (<= 268435455 .cse26) (< .cse26 65521))) (let ((.cse27 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 18) 4294967296))) (or (<= 268435455 .cse27) (< .cse27 65521))) (let ((.cse28 (mod (+ 5 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (< .cse28 65521) (<= 268435455 .cse28)))) is different from false [2021-12-06 19:48:31,764 WARN L227 SmtUtils]: Spent 6.81s on a formula simplification. DAG size of input: 163 DAG size of output: 10 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 19:49:04,107 WARN L227 SmtUtils]: Spent 5.54s on a formula simplification. DAG size of input: 157 DAG size of output: 10 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 19:49:28,837 WARN L227 SmtUtils]: Spent 5.52s on a formula simplification. DAG size of input: 151 DAG size of output: 10 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 19:49:54,011 WARN L227 SmtUtils]: Spent 5.19s on a formula simplification. DAG size of input: 145 DAG size of output: 10 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 19:53:21,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:53:21,465 INFO L93 Difference]: Finished difference Result 156 states and 197 transitions. [2021-12-06 19:53:21,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-12-06 19:53:21,466 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 2.064516129032258) internal successors, (128), 62 states have internal predecessors, (128), 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 68 [2021-12-06 19:53:21,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:53:21,467 INFO L225 Difference]: With dead ends: 156 [2021-12-06 19:53:21,467 INFO L226 Difference]: Without dead ends: 135 [2021-12-06 19:53:21,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 89 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 358.2s TimeCoverageRelationStatistics Valid=2673, Invalid=5158, Unknown=9, NotChecked=350, Total=8190 [2021-12-06 19:53:21,470 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 55 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 1733 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 1946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 1733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:53:21,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 92 Invalid, 1946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 1733 Invalid, 0 Unknown, 4 Unchecked, 1.2s Time] [2021-12-06 19:53:21,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-12-06 19:53:21,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2021-12-06 19:53:21,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 1.044776119402985) internal successors, (140), 134 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:53:21,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 140 transitions. [2021-12-06 19:53:21,482 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 140 transitions. Word has length 68 [2021-12-06 19:53:21,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:53:21,482 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 140 transitions. [2021-12-06 19:53:21,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 2.064516129032258) internal successors, (128), 62 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:53:21,483 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 140 transitions. [2021-12-06 19:53:21,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-12-06 19:53:21,484 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:53:21,484 INFO L514 BasicCegarLoop]: trace histogram [61, 57, 4, 1, 1, 1, 1, 1, 1] [2021-12-06 19:53:21,489 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30e1c3a-bf6b-4028-81db-47a93a4ed7cd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 19:53:21,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30e1c3a-bf6b-4028-81db-47a93a4ed7cd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-12-06 19:53:21,685 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:53:21,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:53:21,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1085724848, now seen corresponding path program 6 times [2021-12-06 19:53:21,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:53:21,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474179001] [2021-12-06 19:53:21,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:53:21,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:53:21,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:53:22,862 INFO L134 CoverageAnalysis]: Checked inductivity of 3721 backedges. 406 proven. 3306 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-06 19:53:22,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:53:22,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474179001] [2021-12-06 19:53:22,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474179001] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:53:22,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284773520] [2021-12-06 19:53:22,862 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 19:53:22,862 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:53:22,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30e1c3a-bf6b-4028-81db-47a93a4ed7cd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:53:22,863 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30e1c3a-bf6b-4028-81db-47a93a4ed7cd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:53:22,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30e1c3a-bf6b-4028-81db-47a93a4ed7cd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 19:53:23,176 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-12-06 19:53:23,176 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 19:53:23,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-06 19:53:23,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:53:23,513 INFO L134 CoverageAnalysis]: Checked inductivity of 3721 backedges. 513 proven. 16 refuted. 0 times theorem prover too weak. 3192 trivial. 0 not checked. [2021-12-06 19:53:23,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:53:23,861 INFO L134 CoverageAnalysis]: Checked inductivity of 3721 backedges. 513 proven. 16 refuted. 0 times theorem prover too weak. 3192 trivial. 0 not checked. [2021-12-06 19:53:23,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284773520] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:53:23,861 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:53:23,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 7, 7] total 70 [2021-12-06 19:53:23,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441033011] [2021-12-06 19:53:23,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:53:23,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2021-12-06 19:53:23,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:53:23,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-12-06 19:53:23,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=769, Invalid=4061, Unknown=0, NotChecked=0, Total=4830 [2021-12-06 19:53:23,864 INFO L87 Difference]: Start difference. First operand 135 states and 140 transitions. Second operand has 70 states, 70 states have (on average 2.1) internal successors, (147), 70 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:53:28,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:53:28,587 INFO L93 Difference]: Finished difference Result 187 states and 219 transitions. [2021-12-06 19:53:28,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-12-06 19:53:28,587 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 2.1) internal successors, (147), 70 states have internal predecessors, (147), 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 128 [2021-12-06 19:53:28,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:53:28,589 INFO L225 Difference]: With dead ends: 187 [2021-12-06 19:53:28,589 INFO L226 Difference]: Without dead ends: 168 [2021-12-06 19:53:28,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1374, Invalid=4788, Unknown=0, NotChecked=0, Total=6162 [2021-12-06 19:53:28,591 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 122 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 6082 mSolverCounterSat, 334 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 6416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 334 IncrementalHoareTripleChecker+Valid, 6082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-06 19:53:28,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 69 Invalid, 6416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [334 Valid, 6082 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-06 19:53:28,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-12-06 19:53:28,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 149. [2021-12-06 19:53:28,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 1.0810810810810811) internal successors, (160), 148 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:53:28,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 160 transitions. [2021-12-06 19:53:28,607 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 160 transitions. Word has length 128 [2021-12-06 19:53:28,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:53:28,608 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 160 transitions. [2021-12-06 19:53:28,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 2.1) internal successors, (147), 70 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:53:28,608 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 160 transitions. [2021-12-06 19:53:28,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-12-06 19:53:28,610 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:53:28,611 INFO L514 BasicCegarLoop]: trace histogram [69, 59, 10, 1, 1, 1, 1, 1, 1] [2021-12-06 19:53:28,614 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30e1c3a-bf6b-4028-81db-47a93a4ed7cd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 19:53:28,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30e1c3a-bf6b-4028-81db-47a93a4ed7cd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:53:28,812 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:53:28,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:53:28,814 INFO L85 PathProgramCache]: Analyzing trace with hash 2078116852, now seen corresponding path program 7 times [2021-12-06 19:53:28,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:53:28,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917529630] [2021-12-06 19:53:28,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:53:28,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:53:28,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:53:30,027 INFO L134 CoverageAnalysis]: Checked inductivity of 4761 backedges. 1140 proven. 3540 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-12-06 19:53:30,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:53:30,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917529630] [2021-12-06 19:53:30,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917529630] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:53:30,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762031013] [2021-12-06 19:53:30,027 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 19:53:30,027 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:53:30,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30e1c3a-bf6b-4028-81db-47a93a4ed7cd/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:53:30,028 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30e1c3a-bf6b-4028-81db-47a93a4ed7cd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:53:30,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e30e1c3a-bf6b-4028-81db-47a93a4ed7cd/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 19:53:30,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:53:30,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 136 conjunts are in the unsatisfiable core [2021-12-06 19:53:30,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:53:30,871 INFO L134 CoverageAnalysis]: Checked inductivity of 4761 backedges. 335 proven. 4422 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 19:53:30,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:53:40,362 INFO L134 CoverageAnalysis]: Checked inductivity of 4761 backedges. 335 proven. 4422 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 19:53:40,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762031013] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:53:40,363 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:53:40,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 69, 70] total 138 [2021-12-06 19:53:40,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001673404] [2021-12-06 19:53:40,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:53:40,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 138 states [2021-12-06 19:53:40,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:53:40,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2021-12-06 19:53:40,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4958, Invalid=13948, Unknown=0, NotChecked=0, Total=18906 [2021-12-06 19:53:40,370 INFO L87 Difference]: Start difference. First operand 149 states and 160 transitions. Second operand has 138 states, 138 states have (on average 2.028985507246377) internal successors, (280), 138 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 19:53:44,541 WARN L838 $PredicateComparison]: unable to prove that (and (let ((.cse0 (mod (+ 72 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (< .cse0 65521) (<= 268435455 .cse0))) (let ((.cse1 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 43) 4294967296))) (or (<= 268435455 .cse1) (< .cse1 65521))) (let ((.cse2 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 37) 4294967296))) (or (< .cse2 65521) (<= 268435455 .cse2))) (let ((.cse3 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 50) 4294967296))) (or (< .cse3 65521) (<= 268435455 .cse3))) (let ((.cse4 (mod (+ 47 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (<= 268435455 .cse4) (< .cse4 65521))) (let ((.cse5 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 36) 4294967296))) (or (<= 268435455 .cse5) (< .cse5 65521))) (let ((.cse6 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 73) 4294967296))) (or (<= 268435455 .cse6) (< .cse6 65521))) (let ((.cse7 (mod (+ 35 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (<= 268435455 .cse7) (< .cse7 65521))) (let ((.cse8 (mod (+ 68 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (< .cse8 65521) (<= 268435455 .cse8))) (let ((.cse9 (mod (+ 23 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (<= 268435455 .cse9) (< .cse9 65521))) (let ((.cse10 (mod (+ 21 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (< .cse10 65521) (<= 268435455 .cse10))) (let ((.cse11 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 10) 4294967296))) (or (<= 268435455 .cse11) (< .cse11 65521))) (let ((.cse12 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 61) 4294967296))) (or (< .cse12 65521) (<= 268435455 .cse12))) (let ((.cse13 (mod (+ 59 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (<= 268435455 .cse13) (< .cse13 65521))) (let ((.cse14 (mod (+ 32 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (<= 268435455 .cse14) (< .cse14 65521))) (let ((.cse15 (mod (+ 16 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (<= 268435455 .cse15) (< .cse15 65521))) (let ((.cse16 (mod (+ 64 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (< .cse16 65521) (<= 268435455 .cse16))) (let ((.cse17 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 8) 4294967296))) (or (< .cse17 65521) (<= 268435455 .cse17))) (let ((.cse18 (mod (+ 14 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (< .cse18 65521) (<= 268435455 .cse18))) (let ((.cse19 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 17) 4294967296))) (or (<= 268435455 .cse19) (< .cse19 65521))) (let ((.cse20 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 20) 4294967296))) (or (<= 268435455 .cse20) (< .cse20 65521))) (let ((.cse21 (mod (+ 29 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (< .cse21 65521) (<= 268435455 .cse21))) (let ((.cse22 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 70) 4294967296))) (or (< .cse22 65521) (<= 268435455 .cse22))) (let ((.cse23 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 55) 4294967296))) (or (< .cse23 65521) (<= 268435455 .cse23))) (let ((.cse24 (mod (+ 57 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (< .cse24 65521) (<= 268435455 .cse24))) (let ((.cse25 (mod (+ 2 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (<= 268435455 .cse25) (< .cse25 65521))) (let ((.cse26 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 58) 4294967296))) (or (< .cse26 65521) (<= 268435455 .cse26))) (let ((.cse27 (mod (+ 51 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (< .cse27 65521) (<= 268435455 .cse27))) (let ((.cse28 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 12) 4294967296))) (or (< .cse28 65521) (<= 268435455 .cse28))) (let ((.cse29 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 4) 4294967296))) (or (<= 268435455 .cse29) (< .cse29 65521))) (let ((.cse30 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 63) 4294967296))) (or (<= 268435455 .cse30) (< .cse30 65521))) (let ((.cse31 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 60) 4294967296))) (or (< .cse31 65521) (<= 268435455 .cse31))) (let ((.cse32 (mod (+ 44 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (<= 268435455 .cse32) (< .cse32 65521))) (let ((.cse33 (mod (+ 42 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (< .cse33 65521) (<= 268435455 .cse33))) (let ((.cse34 (mod (+ 41 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (< .cse34 65521) (<= 268435455 .cse34))) (let ((.cse35 (mod (+ 71 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (< .cse35 65521) (<= 268435455 .cse35))) (let ((.cse36 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 15) 4294967296))) (or (< .cse36 65521) (<= 268435455 .cse36))) (let ((.cse37 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 25) 4294967296))) (or (< .cse37 65521) (<= 268435455 .cse37))) (let ((.cse38 (mod (+ 22 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (<= 268435455 .cse38) (< .cse38 65521))) (let ((.cse39 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 24) 4294967296))) (or (<= 268435455 .cse39) (< .cse39 65521))) (let ((.cse40 (mod (+ 30 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (<= 268435455 .cse40) (< .cse40 65521))) (let ((.cse41 (mod (+ 49 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (<= 268435455 .cse41) (< .cse41 65521))) (let ((.cse42 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 38) 4294967296))) (or (< .cse42 65521) (<= 268435455 .cse42))) (let ((.cse43 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 27) 4294967296))) (or (<= 268435455 .cse43) (< .cse43 65521))) (let ((.cse44 (mod (+ 46 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (< .cse44 65521) (<= 268435455 .cse44))) (let ((.cse45 (mod (+ 40 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (<= 268435455 .cse45) (< .cse45 65521))) (let ((.cse46 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 28) 4294967296))) (or (< .cse46 65521) (<= 268435455 .cse46))) (let ((.cse47 (mod (+ 19 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (< .cse47 65521) (<= 268435455 .cse47))) (let ((.cse48 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 48) 4294967296))) (or (< .cse48 65521) (<= 268435455 .cse48))) (let ((.cse49 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 65) 4294967296))) (or (< .cse49 65521) (<= 268435455 .cse49))) (let ((.cse50 (mod (+ 69 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (< .cse50 65521) (<= 268435455 .cse50))) (let ((.cse51 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 39) 4294967296))) (or (< .cse51 65521) (<= 268435455 .cse51))) (let ((.cse52 (mod (+ 67 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (<= 268435455 .cse52) (< .cse52 65521))) (let ((.cse53 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 34) 4294967296))) (or (<= 268435455 .cse53) (< .cse53 65521))) (< (mod |c_ULTIMATE.start_main_~x~0#1| 4294967296) 65521) (let ((.cse54 (mod (+ 53 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (< .cse54 65521) (<= 268435455 .cse54))) (let ((.cse55 (mod (+ 31 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (<= 268435455 .cse55) (< .cse55 65521))) (let ((.cse56 (mod (+ 66 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (<= 268435455 .cse56) (< .cse56 65521))) (let ((.cse57 (mod (+ 52 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (< .cse57 65521) (<= 268435455 .cse57))) (let ((.cse58 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 26) 4294967296))) (or (< .cse58 65521) (<= 268435455 .cse58))) (let ((.cse59 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 33) 4294967296))) (or (<= 268435455 .cse59) (< .cse59 65521))) (let ((.cse60 (mod (+ 6 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (<= 268435455 .cse60) (< .cse60 65521))) (let ((.cse61 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 18) 4294967296))) (or (<= 268435455 .cse61) (< .cse61 65521))) (let ((.cse62 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 45) 4294967296))) (or (<= 268435455 .cse62) (< .cse62 65521))) (let ((.cse63 (mod (+ 62 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (<= 268435455 .cse63) (< .cse63 65521))) (let ((.cse64 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 54) 4294967296))) (or (<= 268435455 .cse64) (< .cse64 65521))) (let ((.cse65 (mod (+ 56 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (<= 268435455 .cse65) (< .cse65 65521)))) is different from false [2021-12-06 19:59:58,258 WARN L227 SmtUtils]: Spent 4.20m on a formula simplification. DAG size of input: 359 DAG size of output: 17 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)