./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/xcsp/AllInterval-014.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0934945c-d3a7-4077-b564-f1daeb2df260/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0934945c-d3a7-4077-b564-f1daeb2df260/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0934945c-d3a7-4077-b564-f1daeb2df260/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0934945c-d3a7-4077-b564-f1daeb2df260/bin/uautomizer-AkOaLMaTGY/config/AutomizerReach.xml -i ../../sv-benchmarks/c/xcsp/AllInterval-014.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0934945c-d3a7-4077-b564-f1daeb2df260/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0934945c-d3a7-4077-b564-f1daeb2df260/bin/uautomizer-AkOaLMaTGY --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 736410d25baed214c8438b1c17a82ee464904f6d620951db2296933aa7fcdfac --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 08:37:34,055 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 08:37:34,059 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 08:37:34,126 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 08:37:34,127 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 08:37:34,129 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 08:37:34,131 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 08:37:34,133 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 08:37:34,135 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 08:37:34,137 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 08:37:34,138 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 08:37:34,140 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 08:37:34,141 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 08:37:34,142 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 08:37:34,144 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 08:37:34,147 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 08:37:34,148 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 08:37:34,150 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 08:37:34,153 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 08:37:34,156 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 08:37:34,158 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 08:37:34,160 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 08:37:34,162 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 08:37:34,163 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 08:37:34,168 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 08:37:34,168 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 08:37:34,169 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 08:37:34,170 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 08:37:34,171 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 08:37:34,173 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 08:37:34,173 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 08:37:34,175 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 08:37:34,176 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 08:37:34,177 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 08:37:34,179 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 08:37:34,179 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 08:37:34,180 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 08:37:34,181 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 08:37:34,182 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 08:37:34,183 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 08:37:34,184 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 08:37:34,185 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0934945c-d3a7-4077-b564-f1daeb2df260/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-07 08:37:34,213 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 08:37:34,213 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 08:37:34,214 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 08:37:34,214 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 08:37:34,215 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 08:37:34,216 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 08:37:34,216 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 08:37:34,216 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 08:37:34,217 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 08:37:34,217 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 08:37:34,217 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 08:37:34,217 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 08:37:34,218 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 08:37:34,218 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 08:37:34,218 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 08:37:34,219 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 08:37:34,219 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 08:37:34,219 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 08:37:34,219 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 08:37:34,220 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 08:37:34,220 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 08:37:34,220 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 08:37:34,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:37:34,221 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 08:37:34,221 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 08:37:34,221 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 08:37:34,221 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 08:37:34,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 08:37:34,222 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 08:37:34,222 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 08:37:34,222 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 08:37:34,222 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 08:37:34,223 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_0934945c-d3a7-4077-b564-f1daeb2df260/bin/uautomizer-AkOaLMaTGY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0934945c-d3a7-4077-b564-f1daeb2df260/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 736410d25baed214c8438b1c17a82ee464904f6d620951db2296933aa7fcdfac [2021-11-07 08:37:34,566 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 08:37:34,612 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 08:37:34,617 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 08:37:34,619 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 08:37:34,620 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 08:37:34,621 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0934945c-d3a7-4077-b564-f1daeb2df260/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/xcsp/AllInterval-014.c [2021-11-07 08:37:34,712 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0934945c-d3a7-4077-b564-f1daeb2df260/bin/uautomizer-AkOaLMaTGY/data/383315084/276b1dbf0caa4671b88ff0ac6657d210/FLAGad077526b [2021-11-07 08:37:35,441 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 08:37:35,442 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0934945c-d3a7-4077-b564-f1daeb2df260/sv-benchmarks/c/xcsp/AllInterval-014.c [2021-11-07 08:37:35,459 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0934945c-d3a7-4077-b564-f1daeb2df260/bin/uautomizer-AkOaLMaTGY/data/383315084/276b1dbf0caa4671b88ff0ac6657d210/FLAGad077526b [2021-11-07 08:37:35,712 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0934945c-d3a7-4077-b564-f1daeb2df260/bin/uautomizer-AkOaLMaTGY/data/383315084/276b1dbf0caa4671b88ff0ac6657d210 [2021-11-07 08:37:35,715 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 08:37:35,716 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 08:37:35,719 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 08:37:35,719 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 08:37:35,723 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 08:37:35,724 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:37:35" (1/1) ... [2021-11-07 08:37:35,725 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c23344f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:37:35, skipping insertion in model container [2021-11-07 08:37:35,726 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:37:35" (1/1) ... [2021-11-07 08:37:35,734 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 08:37:35,778 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 08:37:36,124 WARN L228 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_0934945c-d3a7-4077-b564-f1daeb2df260/sv-benchmarks/c/xcsp/AllInterval-014.c[9324,9337] [2021-11-07 08:37:36,140 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:37:36,152 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 08:37:36,211 WARN L228 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_0934945c-d3a7-4077-b564-f1daeb2df260/sv-benchmarks/c/xcsp/AllInterval-014.c[9324,9337] [2021-11-07 08:37:36,215 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:37:36,230 INFO L208 MainTranslator]: Completed translation [2021-11-07 08:37:36,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:37:36 WrapperNode [2021-11-07 08:37:36,231 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 08:37:36,232 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 08:37:36,232 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 08:37:36,233 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 08:37:36,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:37:36" (1/1) ... [2021-11-07 08:37:36,255 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:37:36" (1/1) ... [2021-11-07 08:37:36,368 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 08:37:36,369 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 08:37:36,369 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 08:37:36,369 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 08:37:36,379 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:37:36" (1/1) ... [2021-11-07 08:37:36,379 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:37:36" (1/1) ... [2021-11-07 08:37:36,390 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:37:36" (1/1) ... [2021-11-07 08:37:36,390 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:37:36" (1/1) ... [2021-11-07 08:37:36,423 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:37:36" (1/1) ... [2021-11-07 08:37:36,442 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:37:36" (1/1) ... [2021-11-07 08:37:36,449 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:37:36" (1/1) ... [2021-11-07 08:37:36,463 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 08:37:36,464 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 08:37:36,464 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 08:37:36,464 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 08:37:36,465 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:37:36" (1/1) ... [2021-11-07 08:37:36,489 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:37:36,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0934945c-d3a7-4077-b564-f1daeb2df260/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:37:36,551 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0934945c-d3a7-4077-b564-f1daeb2df260/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 08:37:36,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0934945c-d3a7-4077-b564-f1daeb2df260/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 08:37:36,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 08:37:36,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 08:37:36,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 08:37:36,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 08:37:38,162 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 08:37:38,162 INFO L299 CfgBuilder]: Removed 476 assume(true) statements. [2021-11-07 08:37:38,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:37:38 BoogieIcfgContainer [2021-11-07 08:37:38,166 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 08:37:38,168 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 08:37:38,169 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 08:37:38,173 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 08:37:38,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:37:35" (1/3) ... [2021-11-07 08:37:38,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6718d5e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:37:38, skipping insertion in model container [2021-11-07 08:37:38,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:37:36" (2/3) ... [2021-11-07 08:37:38,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6718d5e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:37:38, skipping insertion in model container [2021-11-07 08:37:38,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:37:38" (3/3) ... [2021-11-07 08:37:38,177 INFO L111 eAbstractionObserver]: Analyzing ICFG AllInterval-014.c [2021-11-07 08:37:38,184 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 08:37:38,184 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 08:37:38,252 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 08:37:38,259 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 [2021-11-07 08:37:38,259 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 08:37:38,296 INFO L276 IsEmpty]: Start isEmpty. Operand has 504 states, 502 states have (on average 1.49800796812749) internal successors, (752), 503 states have internal predecessors, (752), 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) [2021-11-07 08:37:38,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2021-11-07 08:37:38,327 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:37:38,328 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:37:38,329 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:37:38,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:37:38,336 INFO L85 PathProgramCache]: Analyzing trace with hash 884788233, now seen corresponding path program 1 times [2021-11-07 08:37:38,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:37:38,348 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046021442] [2021-11-07 08:37:38,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:37:38,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:37:38,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:37:38,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:37:38,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:37:38,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046021442] [2021-11-07 08:37:38,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046021442] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:37:38,885 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:37:38,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 08:37:38,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85520833] [2021-11-07 08:37:38,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 08:37:38,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:37:38,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 08:37:38,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 08:37:38,934 INFO L87 Difference]: Start difference. First operand has 504 states, 502 states have (on average 1.49800796812749) internal successors, (752), 503 states have internal predecessors, (752), 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 250.0) internal successors, (500), 2 states have internal predecessors, (500), 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) [2021-11-07 08:37:39,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:37:39,007 INFO L93 Difference]: Finished difference Result 1002 states and 1498 transitions. [2021-11-07 08:37:39,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 08:37:39,009 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 250.0) internal successors, (500), 2 states have internal predecessors, (500), 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 500 [2021-11-07 08:37:39,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:37:39,038 INFO L225 Difference]: With dead ends: 1002 [2021-11-07 08:37:39,038 INFO L226 Difference]: Without dead ends: 501 [2021-11-07 08:37:39,048 INFO L786 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 [2021-11-07 08:37:39,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2021-11-07 08:37:39,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 501. [2021-11-07 08:37:39,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 500 states have (on average 1.026) internal successors, (513), 500 states have internal predecessors, (513), 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) [2021-11-07 08:37:39,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 513 transitions. [2021-11-07 08:37:39,144 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 513 transitions. Word has length 500 [2021-11-07 08:37:39,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:37:39,148 INFO L470 AbstractCegarLoop]: Abstraction has 501 states and 513 transitions. [2021-11-07 08:37:39,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 250.0) internal successors, (500), 2 states have internal predecessors, (500), 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) [2021-11-07 08:37:39,150 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 513 transitions. [2021-11-07 08:37:39,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2021-11-07 08:37:39,168 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:37:39,169 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:37:39,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 08:37:39,169 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:37:39,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:37:39,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1819417899, now seen corresponding path program 1 times [2021-11-07 08:37:39,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:37:39,171 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064982924] [2021-11-07 08:37:39,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:37:39,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:37:42,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:40:01,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:40:01,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:40:01,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064982924] [2021-11-07 08:40:01,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064982924] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:40:01,171 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:40:01,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [71] imperfect sequences [] total 71 [2021-11-07 08:40:01,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602650995] [2021-11-07 08:40:01,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2021-11-07 08:40:01,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:40:01,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-11-07 08:40:01,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=418, Invalid=4552, Unknown=0, NotChecked=0, Total=4970 [2021-11-07 08:40:01,178 INFO L87 Difference]: Start difference. First operand 501 states and 513 transitions. Second operand has 71 states, 71 states have (on average 7.042253521126761) internal successors, (500), 71 states have internal predecessors, (500), 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) [2021-11-07 08:42:16,925 WARN L207 SmtUtils]: Spent 5.71 s on a formula simplification. DAG size of input: 465 DAG size of output: 393 [2021-11-07 08:42:23,222 WARN L207 SmtUtils]: Spent 5.39 s on a formula simplification. DAG size of input: 448 DAG size of output: 376 [2021-11-07 08:42:32,280 WARN L207 SmtUtils]: Spent 8.33 s on a formula simplification. DAG size of input: 571 DAG size of output: 499 [2021-11-07 08:42:38,386 WARN L207 SmtUtils]: Spent 5.33 s on a formula simplification. DAG size of input: 474 DAG size of output: 402 [2021-11-07 08:42:51,602 WARN L207 SmtUtils]: Spent 6.85 s on a formula simplification. DAG size of input: 600 DAG size of output: 528 [2021-11-07 08:43:02,322 WARN L207 SmtUtils]: Spent 9.86 s on a formula simplification. DAG size of input: 723 DAG size of output: 651 [2021-11-07 08:43:13,595 WARN L207 SmtUtils]: Spent 10.42 s on a formula simplification. DAG size of input: 736 DAG size of output: 665 [2021-11-07 08:43:21,313 WARN L207 SmtUtils]: Spent 6.91 s on a formula simplification. DAG size of input: 611 DAG size of output: 539 [2021-11-07 08:43:29,083 WARN L207 SmtUtils]: Spent 6.93 s on a formula simplification. DAG size of input: 609 DAG size of output: 537 [2021-11-07 08:43:47,036 WARN L207 SmtUtils]: Spent 6.90 s on a formula simplification. DAG size of input: 620 DAG size of output: 549 [2021-11-07 08:43:54,387 WARN L207 SmtUtils]: Spent 6.67 s on a formula simplification. DAG size of input: 612 DAG size of output: 541 [2021-11-07 08:44:29,713 WARN L207 SmtUtils]: Spent 7.41 s on a formula simplification. DAG size of input: 624 DAG size of output: 553 [2021-11-07 08:44:53,218 WARN L207 SmtUtils]: Spent 7.02 s on a formula simplification. DAG size of input: 626 DAG size of output: 552 [2021-11-07 08:45:22,032 WARN L207 SmtUtils]: Spent 7.14 s on a formula simplification. DAG size of input: 630 DAG size of output: 556 [2021-11-07 08:45:29,783 WARN L207 SmtUtils]: Spent 6.97 s on a formula simplification. DAG size of input: 623 DAG size of output: 549 [2021-11-07 08:46:04,621 WARN L207 SmtUtils]: Spent 7.33 s on a formula simplification. DAG size of input: 632 DAG size of output: 558 [2021-11-07 08:46:12,990 WARN L207 SmtUtils]: Spent 7.57 s on a formula simplification. DAG size of input: 627 DAG size of output: 553 [2021-11-07 08:46:33,506 WARN L207 SmtUtils]: Spent 8.70 s on a formula simplification. DAG size of input: 631 DAG size of output: 557 [2021-11-07 08:46:35,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:46:35,186 INFO L93 Difference]: Finished difference Result 810 states and 871 transitions. [2021-11-07 08:46:35,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-11-07 08:46:35,187 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 7.042253521126761) internal successors, (500), 71 states have internal predecessors, (500), 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 500 [2021-11-07 08:46:35,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:46:35,195 INFO L225 Difference]: With dead ends: 810 [2021-11-07 08:46:35,195 INFO L226 Difference]: Without dead ends: 786 [2021-11-07 08:46:35,208 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2406 ImplicationChecksByTransitivity, 418.5s TimeCoverageRelationStatistics Valid=6131, Invalid=15921, Unknown=0, NotChecked=0, Total=22052 [2021-11-07 08:46:35,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2021-11-07 08:46:35,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 525. [2021-11-07 08:46:35,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 524 states have (on average 1.034351145038168) internal successors, (542), 524 states have internal predecessors, (542), 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) [2021-11-07 08:46:35,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 542 transitions. [2021-11-07 08:46:35,228 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 542 transitions. Word has length 500 [2021-11-07 08:46:35,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:46:35,231 INFO L470 AbstractCegarLoop]: Abstraction has 525 states and 542 transitions. [2021-11-07 08:46:35,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 7.042253521126761) internal successors, (500), 71 states have internal predecessors, (500), 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) [2021-11-07 08:46:35,232 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 542 transitions. [2021-11-07 08:46:35,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2021-11-07 08:46:35,244 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:46:35,245 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:46:35,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 08:46:35,245 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:46:35,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:46:35,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1685404393, now seen corresponding path program 1 times [2021-11-07 08:46:35,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:46:35,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445981679] [2021-11-07 08:46:35,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:46:35,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:46:43,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat