./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product55.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b55c49e7-9b34-4694-a584-a37a2092d490/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b55c49e7-9b34-4694-a584-a37a2092d490/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b55c49e7-9b34-4694-a584-a37a2092d490/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b55c49e7-9b34-4694-a584-a37a2092d490/bin/uautomizer-WNIpwEf4Nt/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product55.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b55c49e7-9b34-4694-a584-a37a2092d490/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b55c49e7-9b34-4694-a584-a37a2092d490/bin/uautomizer-WNIpwEf4Nt --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 dbf7149ba5f2c2b45723d578c2ed612c4c7ff3d9 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 01:16:31,840 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 01:16:31,843 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 01:16:31,902 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 01:16:31,903 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 01:16:31,908 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 01:16:31,911 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 01:16:31,915 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 01:16:31,918 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 01:16:31,926 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 01:16:31,928 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 01:16:31,929 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 01:16:31,930 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 01:16:31,933 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 01:16:31,935 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 01:16:31,941 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 01:16:31,944 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 01:16:31,945 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 01:16:31,950 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 01:16:31,954 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 01:16:31,959 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 01:16:31,960 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 01:16:31,964 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 01:16:31,965 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 01:16:31,972 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 01:16:31,973 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 01:16:31,973 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 01:16:31,975 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 01:16:31,976 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 01:16:31,977 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 01:16:31,978 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 01:16:31,978 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 01:16:31,979 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 01:16:31,980 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 01:16:31,981 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 01:16:31,981 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 01:16:31,982 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 01:16:31,982 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 01:16:31,983 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 01:16:31,984 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 01:16:31,984 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 01:16:31,985 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b55c49e7-9b34-4694-a584-a37a2092d490/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-13 01:16:32,011 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 01:16:32,011 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 01:16:32,012 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 01:16:32,012 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 01:16:32,013 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 01:16:32,013 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 01:16:32,014 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 01:16:32,014 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 01:16:32,014 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 01:16:32,014 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 01:16:32,014 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 01:16:32,015 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 01:16:32,015 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 01:16:32,015 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 01:16:32,015 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 01:16:32,015 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 01:16:32,016 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 01:16:32,016 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 01:16:32,016 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 01:16:32,016 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 01:16:32,016 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 01:16:32,017 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 01:16:32,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 01:16:32,017 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 01:16:32,017 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 01:16:32,018 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 01:16:32,018 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 01:16:32,018 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 01:16:32,018 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 01:16:32,018 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 01:16:32,019 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_b55c49e7-9b34-4694-a584-a37a2092d490/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b55c49e7-9b34-4694-a584-a37a2092d490/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dbf7149ba5f2c2b45723d578c2ed612c4c7ff3d9 [2021-10-13 01:16:32,324 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 01:16:32,359 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 01:16:32,362 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 01:16:32,364 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 01:16:32,365 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 01:16:32,366 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b55c49e7-9b34-4694-a584-a37a2092d490/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/product-lines/minepump_spec1_product55.cil.c [2021-10-13 01:16:32,427 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b55c49e7-9b34-4694-a584-a37a2092d490/bin/uautomizer-WNIpwEf4Nt/data/7469d3779/d0a5866c827d41069957c450db509215/FLAGddd40d926 [2021-10-13 01:16:32,951 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 01:16:32,951 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b55c49e7-9b34-4694-a584-a37a2092d490/sv-benchmarks/c/product-lines/minepump_spec1_product55.cil.c [2021-10-13 01:16:32,965 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b55c49e7-9b34-4694-a584-a37a2092d490/bin/uautomizer-WNIpwEf4Nt/data/7469d3779/d0a5866c827d41069957c450db509215/FLAGddd40d926 [2021-10-13 01:16:33,270 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b55c49e7-9b34-4694-a584-a37a2092d490/bin/uautomizer-WNIpwEf4Nt/data/7469d3779/d0a5866c827d41069957c450db509215 [2021-10-13 01:16:33,272 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 01:16:33,273 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 01:16:33,276 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 01:16:33,286 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 01:16:33,300 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 01:16:33,301 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:16:33" (1/1) ... [2021-10-13 01:16:33,303 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2125fefa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:16:33, skipping insertion in model container [2021-10-13 01:16:33,304 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:16:33" (1/1) ... [2021-10-13 01:16:33,311 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 01:16:33,367 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 01:16:33,605 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_b55c49e7-9b34-4694-a584-a37a2092d490/sv-benchmarks/c/product-lines/minepump_spec1_product55.cil.c[7599,7612] [2021-10-13 01:16:33,662 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:16:33,672 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 01:16:33,709 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_b55c49e7-9b34-4694-a584-a37a2092d490/sv-benchmarks/c/product-lines/minepump_spec1_product55.cil.c[7599,7612] [2021-10-13 01:16:33,771 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:16:33,811 INFO L208 MainTranslator]: Completed translation [2021-10-13 01:16:33,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:16:33 WrapperNode [2021-10-13 01:16:33,813 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 01:16:33,815 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 01:16:33,816 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 01:16:33,816 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 01:16:33,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:16:33" (1/1) ... [2021-10-13 01:16:33,851 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:16:33" (1/1) ... [2021-10-13 01:16:33,937 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 01:16:33,939 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 01:16:33,940 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 01:16:33,940 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 01:16:33,948 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:16:33" (1/1) ... [2021-10-13 01:16:33,948 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:16:33" (1/1) ... [2021-10-13 01:16:33,965 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:16:33" (1/1) ... [2021-10-13 01:16:33,981 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:16:33" (1/1) ... [2021-10-13 01:16:34,013 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:16:33" (1/1) ... [2021-10-13 01:16:34,021 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:16:33" (1/1) ... [2021-10-13 01:16:34,024 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:16:33" (1/1) ... [2021-10-13 01:16:34,038 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 01:16:34,039 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 01:16:34,040 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 01:16:34,040 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 01:16:34,041 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:16:33" (1/1) ... [2021-10-13 01:16:34,050 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 01:16:34,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b55c49e7-9b34-4694-a584-a37a2092d490/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:16:34,081 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b55c49e7-9b34-4694-a584-a37a2092d490/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 01:16:34,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b55c49e7-9b34-4694-a584-a37a2092d490/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 01:16:34,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 01:16:34,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 01:16:34,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 01:16:34,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 01:16:35,347 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 01:16:35,347 INFO L299 CfgBuilder]: Removed 280 assume(true) statements. [2021-10-13 01:16:35,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:16:35 BoogieIcfgContainer [2021-10-13 01:16:35,350 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 01:16:35,353 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 01:16:35,353 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 01:16:35,357 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 01:16:35,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:16:33" (1/3) ... [2021-10-13 01:16:35,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fd4bd4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:16:35, skipping insertion in model container [2021-10-13 01:16:35,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:16:33" (2/3) ... [2021-10-13 01:16:35,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fd4bd4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:16:35, skipping insertion in model container [2021-10-13 01:16:35,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:16:35" (3/3) ... [2021-10-13 01:16:35,361 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product55.cil.c [2021-10-13 01:16:35,369 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 01:16:35,370 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-13 01:16:35,426 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 01:16:35,434 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, mConcurrency=FINITE_AUTOMATA, 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 [2021-10-13 01:16:35,437 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-13 01:16:35,463 INFO L276 IsEmpty]: Start isEmpty. Operand has 191 states, 187 states have (on average 1.5561497326203209) internal successors, (291), 190 states have internal predecessors, (291), 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) [2021-10-13 01:16:35,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 01:16:35,470 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:16:35,470 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:16:35,471 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:16:35,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:16:35,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1084846627, now seen corresponding path program 1 times [2021-10-13 01:16:35,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:16:35,486 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581928865] [2021-10-13 01:16:35,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:16:35,487 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:16:35,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:16:35,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:16:35,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:16:35,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581928865] [2021-10-13 01:16:35,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581928865] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:16:35,783 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:16:35,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 01:16:35,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708754498] [2021-10-13 01:16:35,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 01:16:35,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:16:35,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 01:16:35,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 01:16:35,806 INFO L87 Difference]: Start difference. First operand has 191 states, 187 states have (on average 1.5561497326203209) internal successors, (291), 190 states have internal predecessors, (291), 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 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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) [2021-10-13 01:16:35,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:16:35,870 INFO L93 Difference]: Finished difference Result 376 states and 575 transitions. [2021-10-13 01:16:35,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 01:16:35,871 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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 16 [2021-10-13 01:16:35,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:16:35,884 INFO L225 Difference]: With dead ends: 376 [2021-10-13 01:16:35,886 INFO L226 Difference]: Without dead ends: 187 [2021-10-13 01:16:35,891 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 01:16:35,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-10-13 01:16:35,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2021-10-13 01:16:35,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 184 states have (on average 1.516304347826087) internal successors, (279), 186 states have internal predecessors, (279), 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) [2021-10-13 01:16:35,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 279 transitions. [2021-10-13 01:16:35,943 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 279 transitions. Word has length 16 [2021-10-13 01:16:35,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:16:35,943 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 279 transitions. [2021-10-13 01:16:35,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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) [2021-10-13 01:16:35,944 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 279 transitions. [2021-10-13 01:16:35,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 01:16:35,945 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:16:35,945 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:16:35,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 01:16:35,946 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:16:35,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:16:35,947 INFO L82 PathProgramCache]: Analyzing trace with hash 38089730, now seen corresponding path program 1 times [2021-10-13 01:16:35,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:16:35,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873178560] [2021-10-13 01:16:35,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:16:35,948 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:16:36,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:16:36,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:16:36,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:16:36,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873178560] [2021-10-13 01:16:36,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873178560] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:16:36,120 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:16:36,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 01:16:36,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84519068] [2021-10-13 01:16:36,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 01:16:36,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:16:36,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 01:16:36,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:16:36,124 INFO L87 Difference]: Start difference. First operand 187 states and 279 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2021-10-13 01:16:36,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:16:36,138 INFO L93 Difference]: Finished difference Result 187 states and 279 transitions. [2021-10-13 01:16:36,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 01:16:36,139 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 17 [2021-10-13 01:16:36,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:16:36,141 INFO L225 Difference]: With dead ends: 187 [2021-10-13 01:16:36,141 INFO L226 Difference]: Without dead ends: 73 [2021-10-13 01:16:36,142 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:16:36,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-10-13 01:16:36,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-10-13 01:16:36,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.5) internal successors, (108), 72 states have internal predecessors, (108), 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) [2021-10-13 01:16:36,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 108 transitions. [2021-10-13 01:16:36,150 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 108 transitions. Word has length 17 [2021-10-13 01:16:36,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:16:36,151 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 108 transitions. [2021-10-13 01:16:36,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2021-10-13 01:16:36,151 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 108 transitions. [2021-10-13 01:16:36,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 01:16:36,152 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:16:36,152 INFO L512 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] [2021-10-13 01:16:36,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 01:16:36,153 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:16:36,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:16:36,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1082167242, now seen corresponding path program 1 times [2021-10-13 01:16:36,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:16:36,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093084146] [2021-10-13 01:16:36,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:16:36,155 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:16:36,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:16:36,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:16:36,262 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:16:36,263 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093084146] [2021-10-13 01:16:36,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093084146] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:16:36,264 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:16:36,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 01:16:36,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667917036] [2021-10-13 01:16:36,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 01:16:36,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:16:36,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 01:16:36,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:16:36,266 INFO L87 Difference]: Start difference. First operand 73 states and 108 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 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) [2021-10-13 01:16:36,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:16:36,303 INFO L93 Difference]: Finished difference Result 207 states and 312 transitions. [2021-10-13 01:16:36,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 01:16:36,308 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-13 01:16:36,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:16:36,313 INFO L225 Difference]: With dead ends: 207 [2021-10-13 01:16:36,313 INFO L226 Difference]: Without dead ends: 140 [2021-10-13 01:16:36,315 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:16:36,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-10-13 01:16:36,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 136. [2021-10-13 01:16:36,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 1.5185185185185186) internal successors, (205), 135 states have internal predecessors, (205), 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) [2021-10-13 01:16:36,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 205 transitions. [2021-10-13 01:16:36,340 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 205 transitions. Word has length 22 [2021-10-13 01:16:36,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:16:36,341 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 205 transitions. [2021-10-13 01:16:36,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 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) [2021-10-13 01:16:36,342 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 205 transitions. [2021-10-13 01:16:36,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 01:16:36,345 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:16:36,345 INFO L512 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] [2021-10-13 01:16:36,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 01:16:36,346 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:16:36,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:16:36,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1933185311, now seen corresponding path program 1 times [2021-10-13 01:16:36,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:16:36,349 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582191300] [2021-10-13 01:16:36,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:16:36,350 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:16:36,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:16:36,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:16:36,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:16:36,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582191300] [2021-10-13 01:16:36,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582191300] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:16:36,468 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:16:36,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 01:16:36,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4643043] [2021-10-13 01:16:36,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 01:16:36,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:16:36,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 01:16:36,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:16:36,470 INFO L87 Difference]: Start difference. First operand 136 states and 205 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 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) [2021-10-13 01:16:36,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:16:36,530 INFO L93 Difference]: Finished difference Result 283 states and 430 transitions. [2021-10-13 01:16:36,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 01:16:36,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 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 25 [2021-10-13 01:16:36,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:16:36,533 INFO L225 Difference]: With dead ends: 283 [2021-10-13 01:16:36,533 INFO L226 Difference]: Without dead ends: 153 [2021-10-13 01:16:36,538 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:16:36,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-10-13 01:16:36,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 151. [2021-10-13 01:16:36,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 1.46) internal successors, (219), 150 states have internal predecessors, (219), 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) [2021-10-13 01:16:36,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 219 transitions. [2021-10-13 01:16:36,555 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 219 transitions. Word has length 25 [2021-10-13 01:16:36,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:16:36,556 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 219 transitions. [2021-10-13 01:16:36,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 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) [2021-10-13 01:16:36,556 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 219 transitions. [2021-10-13 01:16:36,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 01:16:36,557 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:16:36,557 INFO L512 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] [2021-10-13 01:16:36,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 01:16:36,558 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:16:36,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:16:36,558 INFO L82 PathProgramCache]: Analyzing trace with hash 2034893835, now seen corresponding path program 1 times [2021-10-13 01:16:36,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:16:36,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630363730] [2021-10-13 01:16:36,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:16:36,559 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:16:36,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:16:36,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:16:36,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:16:36,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630363730] [2021-10-13 01:16:36,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630363730] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:16:36,659 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:16:36,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 01:16:36,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733367763] [2021-10-13 01:16:36,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 01:16:36,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:16:36,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 01:16:36,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 01:16:36,663 INFO L87 Difference]: Start difference. First operand 151 states and 219 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 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) [2021-10-13 01:16:36,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:16:36,790 INFO L93 Difference]: Finished difference Result 763 states and 1120 transitions. [2021-10-13 01:16:36,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 01:16:36,791 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 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 25 [2021-10-13 01:16:36,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:16:36,795 INFO L225 Difference]: With dead ends: 763 [2021-10-13 01:16:36,795 INFO L226 Difference]: Without dead ends: 618 [2021-10-13 01:16:36,797 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 38.7ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-13 01:16:36,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2021-10-13 01:16:36,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 286. [2021-10-13 01:16:36,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 285 states have (on average 1.4421052631578948) internal successors, (411), 285 states have internal predecessors, (411), 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) [2021-10-13 01:16:36,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 411 transitions. [2021-10-13 01:16:36,842 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 411 transitions. Word has length 25 [2021-10-13 01:16:36,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:16:36,843 INFO L470 AbstractCegarLoop]: Abstraction has 286 states and 411 transitions. [2021-10-13 01:16:36,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 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) [2021-10-13 01:16:36,844 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 411 transitions. [2021-10-13 01:16:36,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 01:16:36,848 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:16:36,849 INFO L512 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] [2021-10-13 01:16:36,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 01:16:36,849 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:16:36,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:16:36,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1831086741, now seen corresponding path program 1 times [2021-10-13 01:16:36,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:16:36,850 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145670189] [2021-10-13 01:16:36,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:16:36,850 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:16:36,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:16:36,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:16:36,917 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:16:36,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145670189] [2021-10-13 01:16:36,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145670189] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:16:36,918 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:16:36,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 01:16:36,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213675370] [2021-10-13 01:16:36,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 01:16:36,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:16:36,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 01:16:36,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 01:16:36,924 INFO L87 Difference]: Start difference. First operand 286 states and 411 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:16:37,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:16:37,094 INFO L93 Difference]: Finished difference Result 832 states and 1198 transitions. [2021-10-13 01:16:37,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 01:16:37,096 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-13 01:16:37,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:16:37,104 INFO L225 Difference]: With dead ends: 832 [2021-10-13 01:16:37,105 INFO L226 Difference]: Without dead ends: 830 [2021-10-13 01:16:37,111 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 32.2ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-13 01:16:37,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2021-10-13 01:16:37,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 286. [2021-10-13 01:16:37,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 285 states have (on average 1.4350877192982456) internal successors, (409), 285 states have internal predecessors, (409), 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) [2021-10-13 01:16:37,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 409 transitions. [2021-10-13 01:16:37,148 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 409 transitions. Word has length 26 [2021-10-13 01:16:37,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:16:37,148 INFO L470 AbstractCegarLoop]: Abstraction has 286 states and 409 transitions. [2021-10-13 01:16:37,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:16:37,149 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 409 transitions. [2021-10-13 01:16:37,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-13 01:16:37,154 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:16:37,154 INFO L512 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] [2021-10-13 01:16:37,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-13 01:16:37,154 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:16:37,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:16:37,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1549689670, now seen corresponding path program 1 times [2021-10-13 01:16:37,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:16:37,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946194386] [2021-10-13 01:16:37,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:16:37,161 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:16:37,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:16:37,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:16:37,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:16:37,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946194386] [2021-10-13 01:16:37,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946194386] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:16:37,248 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:16:37,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 01:16:37,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404207608] [2021-10-13 01:16:37,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 01:16:37,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:16:37,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 01:16:37,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 01:16:37,250 INFO L87 Difference]: Start difference. First operand 286 states and 409 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:16:37,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:16:37,356 INFO L93 Difference]: Finished difference Result 766 states and 1076 transitions. [2021-10-13 01:16:37,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 01:16:37,356 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-10-13 01:16:37,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:16:37,360 INFO L225 Difference]: With dead ends: 766 [2021-10-13 01:16:37,360 INFO L226 Difference]: Without dead ends: 486 [2021-10-13 01:16:37,362 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.5ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 01:16:37,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2021-10-13 01:16:37,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 322. [2021-10-13 01:16:37,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 321 states have (on average 1.3862928348909658) internal successors, (445), 321 states have internal predecessors, (445), 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) [2021-10-13 01:16:37,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 445 transitions. [2021-10-13 01:16:37,389 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 445 transitions. Word has length 32 [2021-10-13 01:16:37,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:16:37,391 INFO L470 AbstractCegarLoop]: Abstraction has 322 states and 445 transitions. [2021-10-13 01:16:37,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:16:37,391 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 445 transitions. [2021-10-13 01:16:37,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-13 01:16:37,393 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:16:37,394 INFO L512 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] [2021-10-13 01:16:37,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-13 01:16:37,394 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:16:37,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:16:37,395 INFO L82 PathProgramCache]: Analyzing trace with hash -1942716680, now seen corresponding path program 1 times [2021-10-13 01:16:37,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:16:37,395 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094531443] [2021-10-13 01:16:37,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:16:37,397 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:16:37,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:16:37,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:16:37,461 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:16:37,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094531443] [2021-10-13 01:16:37,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094531443] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:16:37,462 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:16:37,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 01:16:37,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240533530] [2021-10-13 01:16:37,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 01:16:37,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:16:37,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 01:16:37,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 01:16:37,464 INFO L87 Difference]: Start difference. First operand 322 states and 445 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:16:37,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:16:37,545 INFO L93 Difference]: Finished difference Result 782 states and 1066 transitions. [2021-10-13 01:16:37,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 01:16:37,545 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-10-13 01:16:37,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:16:37,549 INFO L225 Difference]: With dead ends: 782 [2021-10-13 01:16:37,549 INFO L226 Difference]: Without dead ends: 466 [2021-10-13 01:16:37,550 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 01:16:37,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2021-10-13 01:16:37,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 346. [2021-10-13 01:16:37,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 345 states have (on average 1.3594202898550725) internal successors, (469), 345 states have internal predecessors, (469), 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) [2021-10-13 01:16:37,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 469 transitions. [2021-10-13 01:16:37,587 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 469 transitions. Word has length 32 [2021-10-13 01:16:37,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:16:37,587 INFO L470 AbstractCegarLoop]: Abstraction has 346 states and 469 transitions. [2021-10-13 01:16:37,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:16:37,588 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 469 transitions. [2021-10-13 01:16:37,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-13 01:16:37,588 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:16:37,589 INFO L512 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] [2021-10-13 01:16:37,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-13 01:16:37,589 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:16:37,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:16:37,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1684551242, now seen corresponding path program 1 times [2021-10-13 01:16:37,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:16:37,590 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958931047] [2021-10-13 01:16:37,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:16:37,590 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:16:37,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:16:37,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:16:37,652 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:16:37,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958931047] [2021-10-13 01:16:37,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958931047] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:16:37,653 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:16:37,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 01:16:37,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848567991] [2021-10-13 01:16:37,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 01:16:37,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:16:37,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 01:16:37,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:16:37,654 INFO L87 Difference]: Start difference. First operand 346 states and 469 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:16:37,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:16:37,704 INFO L93 Difference]: Finished difference Result 794 states and 1070 transitions. [2021-10-13 01:16:37,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 01:16:37,707 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-10-13 01:16:37,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:16:37,710 INFO L225 Difference]: With dead ends: 794 [2021-10-13 01:16:37,710 INFO L226 Difference]: Without dead ends: 454 [2021-10-13 01:16:37,711 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:16:37,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2021-10-13 01:16:37,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 454. [2021-10-13 01:16:37,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 453 states have (on average 1.3222958057395144) internal successors, (599), 453 states have internal predecessors, (599), 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) [2021-10-13 01:16:37,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 599 transitions. [2021-10-13 01:16:37,749 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 599 transitions. Word has length 32 [2021-10-13 01:16:37,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:16:37,750 INFO L470 AbstractCegarLoop]: Abstraction has 454 states and 599 transitions. [2021-10-13 01:16:37,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:16:37,750 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 599 transitions. [2021-10-13 01:16:37,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-13 01:16:37,752 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:16:37,752 INFO L512 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] [2021-10-13 01:16:37,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-13 01:16:37,752 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:16:37,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:16:37,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1539369524, now seen corresponding path program 1 times [2021-10-13 01:16:37,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:16:37,755 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560060005] [2021-10-13 01:16:37,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:16:37,755 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:16:37,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:16:37,865 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:16:37,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:16:37,987 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:16:37,987 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 01:16:37,988 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 01:16:37,990 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 01:16:37,994 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 01:16:37,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-13 01:16:38,001 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 01:16:38,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 01:16:38 BoogieIcfgContainer [2021-10-13 01:16:38,118 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 01:16:38,119 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 01:16:38,119 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 01:16:38,119 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 01:16:38,120 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:16:35" (3/4) ... [2021-10-13 01:16:38,121 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-13 01:16:38,194 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b55c49e7-9b34-4694-a584-a37a2092d490/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 01:16:38,194 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 01:16:38,196 INFO L168 Benchmark]: Toolchain (without parser) took 4921.35 ms. Allocated memory was 79.7 MB in the beginning and 121.6 MB in the end (delta: 41.9 MB). Free memory was 42.7 MB in the beginning and 52.2 MB in the end (delta: -9.5 MB). Peak memory consumption was 33.3 MB. Max. memory is 16.1 GB. [2021-10-13 01:16:38,196 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 79.7 MB. Free memory was 60.1 MB in the beginning and 60.0 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:16:38,196 INFO L168 Benchmark]: CACSL2BoogieTranslator took 537.68 ms. Allocated memory was 79.7 MB in the beginning and 100.7 MB in the end (delta: 21.0 MB). Free memory was 42.5 MB in the beginning and 68.9 MB in the end (delta: -26.4 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. [2021-10-13 01:16:38,197 INFO L168 Benchmark]: Boogie Procedure Inliner took 122.04 ms. Allocated memory is still 100.7 MB. Free memory was 68.9 MB in the beginning and 63.9 MB in the end (delta: 5.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 01:16:38,197 INFO L168 Benchmark]: Boogie Preprocessor took 99.32 ms. Allocated memory is still 100.7 MB. Free memory was 63.9 MB in the beginning and 60.3 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 01:16:38,197 INFO L168 Benchmark]: RCFGBuilder took 1311.10 ms. Allocated memory is still 100.7 MB. Free memory was 60.3 MB in the beginning and 67.4 MB in the end (delta: -7.1 MB). Peak memory consumption was 26.6 MB. Max. memory is 16.1 GB. [2021-10-13 01:16:38,198 INFO L168 Benchmark]: TraceAbstraction took 2765.41 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 66.8 MB in the beginning and 65.8 MB in the end (delta: 999.7 kB). Peak memory consumption was 21.5 MB. Max. memory is 16.1 GB. [2021-10-13 01:16:38,198 INFO L168 Benchmark]: Witness Printer took 75.12 ms. Allocated memory is still 121.6 MB. Free memory was 65.8 MB in the beginning and 52.2 MB in the end (delta: 13.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-13 01:16:38,200 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 79.7 MB. Free memory was 60.1 MB in the beginning and 60.0 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 537.68 ms. Allocated memory was 79.7 MB in the beginning and 100.7 MB in the end (delta: 21.0 MB). Free memory was 42.5 MB in the beginning and 68.9 MB in the end (delta: -26.4 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 122.04 ms. Allocated memory is still 100.7 MB. Free memory was 68.9 MB in the beginning and 63.9 MB in the end (delta: 5.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 99.32 ms. Allocated memory is still 100.7 MB. Free memory was 63.9 MB in the beginning and 60.3 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1311.10 ms. Allocated memory is still 100.7 MB. Free memory was 60.3 MB in the beginning and 67.4 MB in the end (delta: -7.1 MB). Peak memory consumption was 26.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2765.41 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 66.8 MB in the beginning and 65.8 MB in the end (delta: 999.7 kB). Peak memory consumption was 21.5 MB. Max. memory is 16.1 GB. * Witness Printer took 75.12 ms. Allocated memory is still 121.6 MB. Free memory was 65.8 MB in the beginning and 52.2 MB in the end (delta: 13.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 508]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L161] int pumpRunning = 0; [L162] int systemActive = 1; [L401] int waterLevel = 1; [L402] int methaneLevelCritical = 0; [L513] int cleanupTimeShifts = 4; [L804] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L586] int retValue_acc ; [L587] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L71] int retValue_acc ; [L74] retValue_acc = 1 [L75] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L593] tmp = valid_product() [L595] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L86] int splverifierCounter ; [L87] int tmp ; [L88] int tmp___0 ; [L89] int tmp___1 ; [L90] int tmp___2 ; [L93] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L95] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L97] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L103] tmp = __VERIFIER_nondet_int() [L105] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L419] COND TRUE waterLevel < 2 [L420] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L113] tmp___0 = __VERIFIER_nondet_int() [L115] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L431] COND FALSE !(\read(methaneLevelCritical)) [L434] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L123] tmp___2 = __VERIFIER_nondet_int() [L125] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L169] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L176] COND TRUE \read(systemActive) [L250] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L253] COND FALSE !(\read(pumpRunning)) [L224] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L227] COND FALSE !(\read(pumpRunning)) [L198] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L201] COND TRUE ! pumpRunning [L347] int retValue_acc ; [L348] int tmp ; [L349] int tmp___0 ; [L481] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L484] COND FALSE !(waterLevel < 2) [L488] retValue_acc = 0 [L489] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L353] tmp = isHighWaterSensorDry() [L355] COND FALSE !(\read(tmp)) [L358] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L360] retValue_acc = tmp___0 [L361] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L203] tmp = isHighWaterLevel() [L205] COND TRUE \read(tmp) [L278] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L610] int tmp ; [L611] int tmp___0 ; [L440] int retValue_acc ; [L443] retValue_acc = methaneLevelCritical [L444] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L615] tmp = isMethaneLevelCritical() [L617] COND TRUE \read(tmp) [L302] int retValue_acc ; [L305] retValue_acc = pumpRunning [L306] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L619] tmp___0 = isPumpRunning() [L621] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L508] reach_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - UnprovableResult [Line: 508]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 508]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 191 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 2574.9ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 31.5ms, AutomataDifference: 817.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 21.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1186 SDtfs, 1178 SDslu, 1401 SDs, 0 SdLazy, 201 SolverSat, 51 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 222.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 122.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=454occurred in iteration=9, InterpolantAutomatonStates: 41, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 266.6ms AutomataMinimizationTime, 9 MinimizatonAttempts, 1166 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 61.6ms SsaConstructionTime, 442.2ms SatisfiabilityAnalysisTime, 574.1ms InterpolantComputationTime, 260 NumberOfCodeBlocks, 260 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 218 ConstructedInterpolants, 0 QuantifiedInterpolants, 428 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-13 01:16:38,247 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b55c49e7-9b34-4694-a584-a37a2092d490/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...