./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/xcsp/AllInterval-009.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cc099a-cab2-43a2-ae31-c0733217a2b2/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cc099a-cab2-43a2-ae31-c0733217a2b2/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cc099a-cab2-43a2-ae31-c0733217a2b2/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cc099a-cab2-43a2-ae31-c0733217a2b2/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/xcsp/AllInterval-009.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cc099a-cab2-43a2-ae31-c0733217a2b2/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cc099a-cab2-43a2-ae31-c0733217a2b2/bin/uautomizer-wIGwrQj20G --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 467fcaafa9af0a00772f5009c99943c6cb7078cb0bca94a00a243b41a6183129 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 12:29:13,111 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 12:29:13,114 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 12:29:13,173 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 12:29:13,174 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 12:29:13,179 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 12:29:13,181 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 12:29:13,185 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 12:29:13,188 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 12:29:13,194 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 12:29:13,195 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 12:29:13,197 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 12:29:13,198 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 12:29:13,200 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 12:29:13,202 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 12:29:13,207 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 12:29:13,209 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 12:29:13,210 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 12:29:13,212 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 12:29:13,220 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 12:29:13,222 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 12:29:13,224 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 12:29:13,227 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 12:29:13,228 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 12:29:13,237 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 12:29:13,238 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 12:29:13,238 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 12:29:13,240 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 12:29:13,241 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 12:29:13,242 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 12:29:13,242 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 12:29:13,243 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 12:29:13,244 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 12:29:13,244 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 12:29:13,246 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 12:29:13,246 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 12:29:13,247 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 12:29:13,247 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 12:29:13,248 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 12:29:13,248 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 12:29:13,249 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 12:29:13,250 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cc099a-cab2-43a2-ae31-c0733217a2b2/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-23 12:29:13,294 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 12:29:13,294 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 12:29:13,295 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 12:29:13,295 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 12:29:13,297 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 12:29:13,297 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 12:29:13,297 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 12:29:13,298 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 12:29:13,298 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 12:29:13,298 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 12:29:13,299 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 12:29:13,299 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 12:29:13,300 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 12:29:13,300 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 12:29:13,300 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 12:29:13,300 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 12:29:13,300 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 12:29:13,300 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 12:29:13,301 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 12:29:13,301 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 12:29:13,301 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 12:29:13,301 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 12:29:13,301 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:29:13,302 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 12:29:13,302 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 12:29:13,302 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 12:29:13,302 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 12:29:13,302 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 12:29:13,302 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 12:29:13,304 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 12:29:13,304 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 12:29:13,304 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 12:29:13,305 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_72cc099a-cab2-43a2-ae31-c0733217a2b2/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cc099a-cab2-43a2-ae31-c0733217a2b2/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 467fcaafa9af0a00772f5009c99943c6cb7078cb0bca94a00a243b41a6183129 [2021-11-23 12:29:13,577 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 12:29:13,599 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 12:29:13,602 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 12:29:13,603 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 12:29:13,604 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 12:29:13,605 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cc099a-cab2-43a2-ae31-c0733217a2b2/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/xcsp/AllInterval-009.c [2021-11-23 12:29:13,685 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cc099a-cab2-43a2-ae31-c0733217a2b2/bin/uautomizer-wIGwrQj20G/data/d0b290df1/0e4a5a7435b2402d89cd5cd1c4549f05/FLAG242db4930 [2021-11-23 12:29:14,270 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 12:29:14,271 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cc099a-cab2-43a2-ae31-c0733217a2b2/sv-benchmarks/c/xcsp/AllInterval-009.c [2021-11-23 12:29:14,285 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cc099a-cab2-43a2-ae31-c0733217a2b2/bin/uautomizer-wIGwrQj20G/data/d0b290df1/0e4a5a7435b2402d89cd5cd1c4549f05/FLAG242db4930 [2021-11-23 12:29:14,601 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cc099a-cab2-43a2-ae31-c0733217a2b2/bin/uautomizer-wIGwrQj20G/data/d0b290df1/0e4a5a7435b2402d89cd5cd1c4549f05 [2021-11-23 12:29:14,604 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 12:29:14,606 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 12:29:14,607 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 12:29:14,608 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 12:29:14,612 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 12:29:14,613 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:29:14" (1/1) ... [2021-11-23 12:29:14,614 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fc470c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:29:14, skipping insertion in model container [2021-11-23 12:29:14,614 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:29:14" (1/1) ... [2021-11-23 12:29:14,622 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 12:29:14,655 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 12:29:14,922 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_72cc099a-cab2-43a2-ae31-c0733217a2b2/sv-benchmarks/c/xcsp/AllInterval-009.c[5030,5043] [2021-11-23 12:29:14,927 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:29:14,936 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 12:29:15,002 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_72cc099a-cab2-43a2-ae31-c0733217a2b2/sv-benchmarks/c/xcsp/AllInterval-009.c[5030,5043] [2021-11-23 12:29:15,014 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:29:15,027 INFO L208 MainTranslator]: Completed translation [2021-11-23 12:29:15,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:29:15 WrapperNode [2021-11-23 12:29:15,028 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 12:29:15,029 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 12:29:15,029 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 12:29:15,029 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 12:29:15,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:29:15" (1/1) ... [2021-11-23 12:29:15,046 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:29:15" (1/1) ... [2021-11-23 12:29:15,091 INFO L137 Inliner]: procedures = 13, calls = 113, calls flagged for inlining = 108, calls inlined = 108, statements flattened = 558 [2021-11-23 12:29:15,091 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 12:29:15,092 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 12:29:15,092 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 12:29:15,092 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 12:29:15,101 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:29:15" (1/1) ... [2021-11-23 12:29:15,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:29:15" (1/1) ... [2021-11-23 12:29:15,106 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:29:15" (1/1) ... [2021-11-23 12:29:15,106 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:29:15" (1/1) ... [2021-11-23 12:29:15,121 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:29:15" (1/1) ... [2021-11-23 12:29:15,129 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:29:15" (1/1) ... [2021-11-23 12:29:15,133 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:29:15" (1/1) ... [2021-11-23 12:29:15,154 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 12:29:15,155 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 12:29:15,156 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 12:29:15,156 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 12:29:15,157 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:29:15" (1/1) ... [2021-11-23 12:29:15,177 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:29:15,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cc099a-cab2-43a2-ae31-c0733217a2b2/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:29:15,207 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cc099a-cab2-43a2-ae31-c0733217a2b2/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 12:29:15,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72cc099a-cab2-43a2-ae31-c0733217a2b2/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 12:29:15,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 12:29:15,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 12:29:15,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 12:29:15,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 12:29:15,357 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 12:29:15,359 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 12:29:15,993 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 12:29:16,004 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 12:29:16,004 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 12:29:16,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:29:16 BoogieIcfgContainer [2021-11-23 12:29:16,007 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 12:29:16,009 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 12:29:16,009 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 12:29:16,013 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 12:29:16,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 12:29:14" (1/3) ... [2021-11-23 12:29:16,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@699e87d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:29:16, skipping insertion in model container [2021-11-23 12:29:16,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:29:15" (2/3) ... [2021-11-23 12:29:16,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@699e87d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:29:16, skipping insertion in model container [2021-11-23 12:29:16,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:29:16" (3/3) ... [2021-11-23 12:29:16,017 INFO L111 eAbstractionObserver]: Analyzing ICFG AllInterval-009.c [2021-11-23 12:29:16,023 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 12:29:16,023 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 12:29:16,076 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 12:29:16,084 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 [2021-11-23 12:29:16,084 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 12:29:16,107 INFO L276 IsEmpty]: Start isEmpty. Operand has 235 states, 233 states have (on average 1.4935622317596566) internal successors, (348), 234 states have internal predecessors, (348), 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) [2021-11-23 12:29:16,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2021-11-23 12:29:16,125 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:29:16,126 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:29:16,127 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:29:16,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:29:16,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1771615758, now seen corresponding path program 1 times [2021-11-23 12:29:16,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:29:16,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526512101] [2021-11-23 12:29:16,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:29:16,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:29:16,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:29:16,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:29:16,458 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:29:16,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526512101] [2021-11-23 12:29:16,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526512101] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:29:16,462 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:29:16,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 12:29:16,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636372000] [2021-11-23 12:29:16,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:29:16,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 12:29:16,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:29:16,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 12:29:16,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 12:29:16,517 INFO L87 Difference]: Start difference. First operand has 235 states, 233 states have (on average 1.4935622317596566) internal successors, (348), 234 states have internal predecessors, (348), 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 115.5) internal successors, (231), 2 states have internal predecessors, (231), 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) [2021-11-23 12:29:16,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:29:16,576 INFO L93 Difference]: Finished difference Result 464 states and 690 transitions. [2021-11-23 12:29:16,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 12:29:16,580 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 115.5) internal successors, (231), 2 states have internal predecessors, (231), 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 231 [2021-11-23 12:29:16,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:29:16,595 INFO L225 Difference]: With dead ends: 464 [2021-11-23 12:29:16,596 INFO L226 Difference]: Without dead ends: 232 [2021-11-23 12:29:16,601 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 [2021-11-23 12:29:16,607 INFO L933 BasicCegarLoop]: 239 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, 239 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 [2021-11-23 12:29:16,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:29:16,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-11-23 12:29:16,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2021-11-23 12:29:16,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 1.0346320346320346) internal successors, (239), 231 states have internal predecessors, (239), 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) [2021-11-23 12:29:16,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 239 transitions. [2021-11-23 12:29:16,683 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 239 transitions. Word has length 231 [2021-11-23 12:29:16,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:29:16,684 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 239 transitions. [2021-11-23 12:29:16,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 115.5) internal successors, (231), 2 states have internal predecessors, (231), 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) [2021-11-23 12:29:16,685 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 239 transitions. [2021-11-23 12:29:16,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2021-11-23 12:29:16,699 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:29:16,699 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:29:16,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 12:29:16,700 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:29:16,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:29:16,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1473728428, now seen corresponding path program 1 times [2021-11-23 12:29:16,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:29:16,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254302177] [2021-11-23 12:29:16,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:29:16,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:29:17,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:29:48,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:29:48,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:29:48,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254302177] [2021-11-23 12:29:48,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254302177] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:29:48,215 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:29:48,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [] total 54 [2021-11-23 12:29:48,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192916462] [2021-11-23 12:29:48,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:29:48,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2021-11-23 12:29:48,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:29:48,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-11-23 12:29:48,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=2610, Unknown=0, NotChecked=0, Total=2862 [2021-11-23 12:29:48,222 INFO L87 Difference]: Start difference. First operand 232 states and 239 transitions. Second operand has 54 states, 54 states have (on average 4.277777777777778) internal successors, (231), 54 states have internal predecessors, (231), 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) [2021-11-23 12:31:25,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:31:25,016 INFO L93 Difference]: Finished difference Result 310 states and 322 transitions. [2021-11-23 12:31:25,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-11-23 12:31:25,018 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 4.277777777777778) internal successors, (231), 54 states have internal predecessors, (231), 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 231 [2021-11-23 12:31:25,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:31:25,022 INFO L225 Difference]: With dead ends: 310 [2021-11-23 12:31:25,022 INFO L226 Difference]: Without dead ends: 305 [2021-11-23 12:31:25,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1333 ImplicationChecksByTransitivity, 100.5s TimeCoverageRelationStatistics Valid=3310, Invalid=8680, Unknown=0, NotChecked=0, Total=11990 [2021-11-23 12:31:25,030 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 2392 mSDsluCounter, 2179 mSDsCounter, 0 mSdLazyCounter, 4517 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2392 SdHoareTripleChecker+Valid, 2321 SdHoareTripleChecker+Invalid, 4760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 4517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2021-11-23 12:31:25,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2392 Valid, 2321 Invalid, 4760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 4517 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2021-11-23 12:31:25,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2021-11-23 12:31:25,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 248. [2021-11-23 12:31:25,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 247 states have (on average 1.0445344129554657) internal successors, (258), 247 states have internal predecessors, (258), 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) [2021-11-23 12:31:25,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 258 transitions. [2021-11-23 12:31:25,048 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 258 transitions. Word has length 231 [2021-11-23 12:31:25,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:31:25,049 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 258 transitions. [2021-11-23 12:31:25,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 4.277777777777778) internal successors, (231), 54 states have internal predecessors, (231), 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) [2021-11-23 12:31:25,050 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 258 transitions. [2021-11-23 12:31:25,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2021-11-23 12:31:25,053 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:31:25,053 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:31:25,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 12:31:25,054 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:31:25,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:31:25,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1475575470, now seen corresponding path program 1 times [2021-11-23 12:31:25,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:31:25,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655492416] [2021-11-23 12:31:25,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:31:25,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:31:26,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:41:29,697 WARN L227 SmtUtils]: Spent 5.15s on a formula simplification. DAG size of input: 675 DAG size of output: 674 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)