./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/xcsp/AllInterval-013.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_f0bdd348-3c0c-4b67-96a9-0cee365343ff/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0bdd348-3c0c-4b67-96a9-0cee365343ff/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_f0bdd348-3c0c-4b67-96a9-0cee365343ff/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0bdd348-3c0c-4b67-96a9-0cee365343ff/bin/uautomizer-AkOaLMaTGY/config/AutomizerReach.xml -i ../../sv-benchmarks/c/xcsp/AllInterval-013.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0bdd348-3c0c-4b67-96a9-0cee365343ff/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_f0bdd348-3c0c-4b67-96a9-0cee365343ff/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 a8a2fc417805598eeae764f72d637dc8faae2c799a3420bfb6078bca58fa9a84 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 07:52:27,832 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 07:52:27,835 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 07:52:27,918 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 07:52:27,919 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 07:52:27,927 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 07:52:27,931 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 07:52:27,938 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 07:52:27,942 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 07:52:27,954 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 07:52:27,956 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 07:52:27,960 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 07:52:27,960 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 07:52:27,966 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 07:52:27,969 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 07:52:27,979 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 07:52:27,982 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 07:52:27,984 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 07:52:27,988 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 07:52:28,002 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 07:52:28,004 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 07:52:28,007 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 07:52:28,012 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 07:52:28,013 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 07:52:28,019 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 07:52:28,020 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 07:52:28,020 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 07:52:28,023 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 07:52:28,024 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 07:52:28,026 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 07:52:28,027 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 07:52:28,029 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 07:52:28,032 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 07:52:28,034 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 07:52:28,036 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 07:52:28,037 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 07:52:28,038 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 07:52:28,038 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 07:52:28,038 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 07:52:28,040 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 07:52:28,041 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 07:52:28,042 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0bdd348-3c0c-4b67-96a9-0cee365343ff/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-07 07:52:28,103 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 07:52:28,104 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 07:52:28,104 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 07:52:28,104 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 07:52:28,108 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 07:52:28,109 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 07:52:28,109 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 07:52:28,109 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 07:52:28,110 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 07:52:28,110 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 07:52:28,111 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 07:52:28,112 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 07:52:28,112 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 07:52:28,112 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 07:52:28,112 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 07:52:28,113 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 07:52:28,113 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 07:52:28,113 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 07:52:28,113 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 07:52:28,114 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 07:52:28,114 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 07:52:28,114 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 07:52:28,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 07:52:28,115 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 07:52:28,116 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 07:52:28,116 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 07:52:28,116 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 07:52:28,116 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 07:52:28,117 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 07:52:28,119 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 07:52:28,119 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 07:52:28,119 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 07:52:28,120 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_f0bdd348-3c0c-4b67-96a9-0cee365343ff/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0bdd348-3c0c-4b67-96a9-0cee365343ff/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a8a2fc417805598eeae764f72d637dc8faae2c799a3420bfb6078bca58fa9a84 [2021-11-07 07:52:28,551 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 07:52:28,595 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 07:52:28,600 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 07:52:28,602 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 07:52:28,603 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 07:52:28,605 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0bdd348-3c0c-4b67-96a9-0cee365343ff/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/xcsp/AllInterval-013.c [2021-11-07 07:52:28,728 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0bdd348-3c0c-4b67-96a9-0cee365343ff/bin/uautomizer-AkOaLMaTGY/data/d89ac85f4/99d8be80c6a847b4ad2fa0ca55dec28e/FLAGc949df39a [2021-11-07 07:52:29,588 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 07:52:29,588 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0bdd348-3c0c-4b67-96a9-0cee365343ff/sv-benchmarks/c/xcsp/AllInterval-013.c [2021-11-07 07:52:29,618 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0bdd348-3c0c-4b67-96a9-0cee365343ff/bin/uautomizer-AkOaLMaTGY/data/d89ac85f4/99d8be80c6a847b4ad2fa0ca55dec28e/FLAGc949df39a [2021-11-07 07:52:29,848 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0bdd348-3c0c-4b67-96a9-0cee365343ff/bin/uautomizer-AkOaLMaTGY/data/d89ac85f4/99d8be80c6a847b4ad2fa0ca55dec28e [2021-11-07 07:52:29,852 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 07:52:29,867 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 07:52:29,877 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 07:52:29,894 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 07:52:29,899 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 07:52:29,900 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:52:29" (1/1) ... [2021-11-07 07:52:29,901 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c6708f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:52:29, skipping insertion in model container [2021-11-07 07:52:29,902 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:52:29" (1/1) ... [2021-11-07 07:52:29,912 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 07:52:29,960 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 07:52:30,417 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_f0bdd348-3c0c-4b67-96a9-0cee365343ff/sv-benchmarks/c/xcsp/AllInterval-013.c[8364,8377] [2021-11-07 07:52:30,443 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:52:30,473 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 07:52:30,596 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_f0bdd348-3c0c-4b67-96a9-0cee365343ff/sv-benchmarks/c/xcsp/AllInterval-013.c[8364,8377] [2021-11-07 07:52:30,611 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:52:30,630 INFO L208 MainTranslator]: Completed translation [2021-11-07 07:52:30,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:52:30 WrapperNode [2021-11-07 07:52:30,631 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 07:52:30,633 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 07:52:30,634 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 07:52:30,634 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 07:52:30,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:52:30" (1/1) ... [2021-11-07 07:52:30,684 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:52:30" (1/1) ... [2021-11-07 07:52:30,843 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 07:52:30,845 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 07:52:30,845 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 07:52:30,845 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 07:52:30,857 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:52:30" (1/1) ... [2021-11-07 07:52:30,858 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:52:30" (1/1) ... [2021-11-07 07:52:30,869 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:52:30" (1/1) ... [2021-11-07 07:52:30,869 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:52:30" (1/1) ... [2021-11-07 07:52:30,918 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:52:30" (1/1) ... [2021-11-07 07:52:30,936 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:52:30" (1/1) ... [2021-11-07 07:52:30,940 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:52:30" (1/1) ... [2021-11-07 07:52:30,951 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 07:52:30,952 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 07:52:30,953 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 07:52:30,953 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 07:52:30,954 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:52:30" (1/1) ... [2021-11-07 07:52:30,965 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 07:52:31,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0bdd348-3c0c-4b67-96a9-0cee365343ff/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:52:31,017 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0bdd348-3c0c-4b67-96a9-0cee365343ff/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 07:52:31,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0bdd348-3c0c-4b67-96a9-0cee365343ff/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 07:52:31,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 07:52:31,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 07:52:31,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 07:52:31,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 07:52:32,867 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 07:52:32,867 INFO L299 CfgBuilder]: Removed 416 assume(true) statements. [2021-11-07 07:52:32,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:52:32 BoogieIcfgContainer [2021-11-07 07:52:32,873 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 07:52:32,876 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 07:52:32,876 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 07:52:32,882 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 07:52:32,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:52:29" (1/3) ... [2021-11-07 07:52:32,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e7a091 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:52:32, skipping insertion in model container [2021-11-07 07:52:32,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:52:30" (2/3) ... [2021-11-07 07:52:32,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e7a091 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:52:32, skipping insertion in model container [2021-11-07 07:52:32,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:52:32" (3/3) ... [2021-11-07 07:52:32,892 INFO L111 eAbstractionObserver]: Analyzing ICFG AllInterval-013.c [2021-11-07 07:52:32,901 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 07:52:32,901 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 07:52:33,000 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 07:52:33,013 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 07:52:33,014 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 07:52:33,070 INFO L276 IsEmpty]: Start isEmpty. Operand has 442 states, 440 states have (on average 1.4977272727272728) internal successors, (659), 441 states have internal predecessors, (659), 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 07:52:33,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2021-11-07 07:52:33,109 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:52:33,111 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] [2021-11-07 07:52:33,112 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 07:52:33,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:52:33,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1138496469, now seen corresponding path program 1 times [2021-11-07 07:52:33,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:52:33,140 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017172383] [2021-11-07 07:52:33,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:52:33,143 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:52:33,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:52:33,872 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 07:52:33,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:52:33,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017172383] [2021-11-07 07:52:33,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017172383] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:52:33,875 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:52:33,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 07:52:33,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134884313] [2021-11-07 07:52:33,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 07:52:33,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:52:33,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 07:52:33,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 07:52:33,945 INFO L87 Difference]: Start difference. First operand has 442 states, 440 states have (on average 1.4977272727272728) internal successors, (659), 441 states have internal predecessors, (659), 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 219.0) internal successors, (438), 2 states have internal predecessors, (438), 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 07:52:34,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:52:34,062 INFO L93 Difference]: Finished difference Result 878 states and 1312 transitions. [2021-11-07 07:52:34,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 07:52:34,065 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 219.0) internal successors, (438), 2 states have internal predecessors, (438), 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 438 [2021-11-07 07:52:34,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:52:34,104 INFO L225 Difference]: With dead ends: 878 [2021-11-07 07:52:34,105 INFO L226 Difference]: Without dead ends: 439 [2021-11-07 07:52:34,115 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 07:52:34,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2021-11-07 07:52:34,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 439. [2021-11-07 07:52:34,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 438 states have (on average 1.0273972602739727) internal successors, (450), 438 states have internal predecessors, (450), 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 07:52:34,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 450 transitions. [2021-11-07 07:52:34,250 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 450 transitions. Word has length 438 [2021-11-07 07:52:34,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:52:34,255 INFO L470 AbstractCegarLoop]: Abstraction has 439 states and 450 transitions. [2021-11-07 07:52:34,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 219.0) internal successors, (438), 2 states have internal predecessors, (438), 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 07:52:34,256 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 450 transitions. [2021-11-07 07:52:34,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2021-11-07 07:52:34,286 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:52:34,287 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] [2021-11-07 07:52:34,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 07:52:34,291 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 07:52:34,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:52:34,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1694593237, now seen corresponding path program 1 times [2021-11-07 07:52:34,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:52:34,298 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506821998] [2021-11-07 07:52:34,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:52:34,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:52:38,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:55:09,296 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 07:55:09,297 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:55:09,297 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506821998] [2021-11-07 07:55:09,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506821998] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:55:09,298 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:55:09,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [70] imperfect sequences [] total 70 [2021-11-07 07:55:09,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955975759] [2021-11-07 07:55:09,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2021-11-07 07:55:09,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:55:09,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-11-07 07:55:09,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=396, Invalid=4434, Unknown=0, NotChecked=0, Total=4830 [2021-11-07 07:55:09,307 INFO L87 Difference]: Start difference. First operand 439 states and 450 transitions. Second operand has 70 states, 70 states have (on average 6.257142857142857) internal successors, (438), 70 states have internal predecessors, (438), 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 07:57:02,133 WARN L207 SmtUtils]: Spent 7.53 s on a formula simplification. DAG size of input: 653 DAG size of output: 600 [2021-11-07 07:57:16,453 WARN L207 SmtUtils]: Spent 5.75 s on a formula simplification. DAG size of input: 528 DAG size of output: 457 [2021-11-07 07:57:24,779 WARN L207 SmtUtils]: Spent 7.47 s on a formula simplification. DAG size of input: 660 DAG size of output: 531 [2021-11-07 07:57:33,834 WARN L207 SmtUtils]: Spent 8.11 s on a formula simplification. DAG size of input: 653 DAG size of output: 581 [2021-11-07 07:57:41,896 WARN L207 SmtUtils]: Spent 7.07 s on a formula simplification. DAG size of input: 618 DAG size of output: 547 [2021-11-07 07:57:49,644 WARN L207 SmtUtils]: Spent 6.83 s on a formula simplification. DAG size of input: 616 DAG size of output: 544 [2021-11-07 07:57:55,466 WARN L207 SmtUtils]: Spent 5.05 s on a formula simplification. DAG size of input: 557 DAG size of output: 485 [2021-11-07 07:58:02,103 WARN L207 SmtUtils]: Spent 5.89 s on a formula simplification. DAG size of input: 628 DAG size of output: 554 [2021-11-07 07:58:10,286 WARN L207 SmtUtils]: Spent 7.44 s on a formula simplification. DAG size of input: 721 DAG size of output: 648 [2021-11-07 07:58:26,133 WARN L207 SmtUtils]: Spent 5.02 s on a formula simplification. DAG size of input: 581 DAG size of output: 509 [2021-11-07 07:58:43,402 WARN L207 SmtUtils]: Spent 6.90 s on a formula simplification. DAG size of input: 741 DAG size of output: 668 [2021-11-07 07:59:12,667 WARN L207 SmtUtils]: Spent 7.09 s on a formula simplification. DAG size of input: 751 DAG size of output: 678 [2021-11-07 07:59:44,319 WARN L207 SmtUtils]: Spent 7.93 s on a formula simplification. DAG size of input: 751 DAG size of output: 678 [2021-11-07 07:59:53,214 WARN L207 SmtUtils]: Spent 7.92 s on a formula simplification. DAG size of input: 747 DAG size of output: 674 [2021-11-07 08:00:24,129 WARN L207 SmtUtils]: Spent 7.52 s on a formula simplification. DAG size of input: 749 DAG size of output: 676 [2021-11-07 08:00:29,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:00:29,906 INFO L93 Difference]: Finished difference Result 645 states and 684 transitions. [2021-11-07 08:00:29,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-11-07 08:00:29,907 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 6.257142857142857) internal successors, (438), 70 states have internal predecessors, (438), 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 438 [2021-11-07 08:00:29,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:00:29,918 INFO L225 Difference]: With dead ends: 645 [2021-11-07 08:00:29,918 INFO L226 Difference]: Without dead ends: 633 [2021-11-07 08:00:29,929 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2251 ImplicationChecksByTransitivity, 355.2s TimeCoverageRelationStatistics Valid=5440, Invalid=14300, Unknown=0, NotChecked=0, Total=19740 [2021-11-07 08:00:29,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2021-11-07 08:00:29,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 463. [2021-11-07 08:00:29,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 462 states have (on average 1.0367965367965368) internal successors, (479), 462 states have internal predecessors, (479), 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 08:00:29,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 479 transitions. [2021-11-07 08:00:29,950 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 479 transitions. Word has length 438 [2021-11-07 08:00:29,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:00:29,951 INFO L470 AbstractCegarLoop]: Abstraction has 463 states and 479 transitions. [2021-11-07 08:00:29,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 6.257142857142857) internal successors, (438), 70 states have internal predecessors, (438), 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 08:00:29,952 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 479 transitions. [2021-11-07 08:00:29,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2021-11-07 08:00:29,963 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:00:29,963 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] [2021-11-07 08:00:29,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 08:00:29,964 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:00:29,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:00:29,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1436427799, now seen corresponding path program 1 times [2021-11-07 08:00:29,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:00:29,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251656208] [2021-11-07 08:00:29,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:00:29,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:00:32,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:03:38,755 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 08:03:38,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:03:38,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251656208] [2021-11-07 08:03:38,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251656208] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:03:38,756 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:03:38,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [65] imperfect sequences [] total 65 [2021-11-07 08:03:38,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117464793] [2021-11-07 08:03:38,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2021-11-07 08:03:38,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:03:38,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2021-11-07 08:03:38,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=3831, Unknown=0, NotChecked=0, Total=4160 [2021-11-07 08:03:38,762 INFO L87 Difference]: Start difference. First operand 463 states and 479 transitions. Second operand has 65 states, 65 states have (on average 6.7384615384615385) internal successors, (438), 65 states have internal predecessors, (438), 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)