./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl-simplified/s3_srvr_2.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c17124-3dc9-42ee-a7df-3bdb15d68dc2/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c17124-3dc9-42ee-a7df-3bdb15d68dc2/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c17124-3dc9-42ee-a7df-3bdb15d68dc2/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c17124-3dc9-42ee-a7df-3bdb15d68dc2/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/openssl-simplified/s3_srvr_2.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c17124-3dc9-42ee-a7df-3bdb15d68dc2/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c17124-3dc9-42ee-a7df-3bdb15d68dc2/bin/uautomizer-GMMbpWq8iD --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 b06f981da6e75898ef47c2c6c1e10d04c20eecfc87b2c2b478f516b0e8867842 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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-b2eff8b [2021-10-28 23:13:25,847 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:13:25,849 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:13:25,891 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:13:25,891 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:13:25,893 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:13:25,895 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:13:25,897 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:13:25,900 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:13:25,901 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:13:25,902 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:13:25,904 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:13:25,905 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:13:25,906 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:13:25,908 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:13:25,910 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:13:25,911 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:13:25,913 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:13:25,915 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:13:25,918 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:13:25,920 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:13:25,922 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:13:25,924 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:13:25,925 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:13:25,930 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:13:25,930 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:13:25,931 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:13:25,932 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:13:25,933 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:13:25,934 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:13:25,935 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:13:25,936 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:13:25,945 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:13:25,946 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:13:25,948 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:13:25,948 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:13:25,949 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:13:25,950 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:13:25,950 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:13:25,951 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:13:25,952 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:13:25,956 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c17124-3dc9-42ee-a7df-3bdb15d68dc2/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 23:13:25,985 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:13:25,985 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:13:25,985 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:13:25,986 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:13:25,987 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:13:25,987 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:13:25,988 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:13:25,988 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:13:25,988 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:13:25,989 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:13:25,989 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:13:25,989 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:13:25,989 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 23:13:25,990 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:13:25,990 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 23:13:25,990 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:13:25,991 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:13:25,991 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:13:25,991 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 23:13:25,991 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:13:25,992 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:13:25,992 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:13:25,992 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:13:25,993 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:13:25,993 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:13:25,993 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 23:13:25,994 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:13:25,994 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:13:25,994 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 23:13:25,995 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 23:13:25,995 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 23:13:25,995 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:13:25,995 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_66c17124-3dc9-42ee-a7df-3bdb15d68dc2/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c17124-3dc9-42ee-a7df-3bdb15d68dc2/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b06f981da6e75898ef47c2c6c1e10d04c20eecfc87b2c2b478f516b0e8867842 [2021-10-28 23:13:26,224 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:13:26,245 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:13:26,248 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:13:26,249 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:13:26,250 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:13:26,251 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c17124-3dc9-42ee-a7df-3bdb15d68dc2/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/openssl-simplified/s3_srvr_2.cil-2.c [2021-10-28 23:13:26,360 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c17124-3dc9-42ee-a7df-3bdb15d68dc2/bin/uautomizer-GMMbpWq8iD/data/5ac8511f5/a1c1c4dd87b64d5dbf4a9a5f1e9744ae/FLAG9b047a2e2 [2021-10-28 23:13:26,865 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:13:26,866 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c17124-3dc9-42ee-a7df-3bdb15d68dc2/sv-benchmarks/c/openssl-simplified/s3_srvr_2.cil-2.c [2021-10-28 23:13:26,877 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c17124-3dc9-42ee-a7df-3bdb15d68dc2/bin/uautomizer-GMMbpWq8iD/data/5ac8511f5/a1c1c4dd87b64d5dbf4a9a5f1e9744ae/FLAG9b047a2e2 [2021-10-28 23:13:27,173 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c17124-3dc9-42ee-a7df-3bdb15d68dc2/bin/uautomizer-GMMbpWq8iD/data/5ac8511f5/a1c1c4dd87b64d5dbf4a9a5f1e9744ae [2021-10-28 23:13:27,176 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:13:27,177 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:13:27,180 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:13:27,181 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:13:27,184 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:13:27,185 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:13:27" (1/1) ... [2021-10-28 23:13:27,186 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79f094d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:13:27, skipping insertion in model container [2021-10-28 23:13:27,186 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:13:27" (1/1) ... [2021-10-28 23:13:27,198 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:13:27,239 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:13:27,489 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_66c17124-3dc9-42ee-a7df-3bdb15d68dc2/sv-benchmarks/c/openssl-simplified/s3_srvr_2.cil-2.c[42877,42890] [2021-10-28 23:13:27,497 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:13:27,505 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:13:27,578 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_66c17124-3dc9-42ee-a7df-3bdb15d68dc2/sv-benchmarks/c/openssl-simplified/s3_srvr_2.cil-2.c[42877,42890] [2021-10-28 23:13:27,582 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:13:27,598 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:13:27,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:13:27 WrapperNode [2021-10-28 23:13:27,598 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:13:27,599 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:13:27,600 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:13:27,600 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:13:27,607 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:13:27" (1/1) ... [2021-10-28 23:13:27,617 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:13:27" (1/1) ... [2021-10-28 23:13:27,662 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:13:27,663 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:13:27,663 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:13:27,663 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:13:27,672 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:13:27" (1/1) ... [2021-10-28 23:13:27,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:13:27" (1/1) ... [2021-10-28 23:13:27,677 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:13:27" (1/1) ... [2021-10-28 23:13:27,677 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:13:27" (1/1) ... [2021-10-28 23:13:27,688 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:13:27" (1/1) ... [2021-10-28 23:13:27,697 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:13:27" (1/1) ... [2021-10-28 23:13:27,700 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:13:27" (1/1) ... [2021-10-28 23:13:27,706 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:13:27,717 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:13:27,717 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:13:27,717 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:13:27,719 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:13:27" (1/1) ... [2021-10-28 23:13:27,727 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:13:27,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c17124-3dc9-42ee-a7df-3bdb15d68dc2/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:13:27,760 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c17124-3dc9-42ee-a7df-3bdb15d68dc2/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:13:27,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c17124-3dc9-42ee-a7df-3bdb15d68dc2/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:13:27,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:13:27,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:13:27,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:13:27,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:13:27,920 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-28 23:13:28,562 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-10-28 23:13:28,562 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-10-28 23:13:28,570 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:13:28,570 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-28 23:13:28,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:13:28 BoogieIcfgContainer [2021-10-28 23:13:28,572 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:13:28,574 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:13:28,574 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:13:28,578 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:13:28,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:13:27" (1/3) ... [2021-10-28 23:13:28,579 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42a8fc41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:13:28, skipping insertion in model container [2021-10-28 23:13:28,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:13:27" (2/3) ... [2021-10-28 23:13:28,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42a8fc41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:13:28, skipping insertion in model container [2021-10-28 23:13:28,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:13:28" (3/3) ... [2021-10-28 23:13:28,581 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_2.cil-2.c [2021-10-28 23:13:28,586 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:13:28,587 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 23:13:28,632 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:13:28,639 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 23:13:28,639 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 23:13:28,658 INFO L276 IsEmpty]: Start isEmpty. Operand has 141 states, 139 states have (on average 1.7266187050359711) internal successors, (240), 140 states have internal predecessors, (240), 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) [2021-10-28 23:13:28,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-28 23:13:28,666 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:13:28,666 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:13:28,667 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:13:28,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:13:28,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1632005994, now seen corresponding path program 1 times [2021-10-28 23:13:28,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:13:28,680 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031783382] [2021-10-28 23:13:28,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:13:28,681 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:13:28,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:13:28,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:13:28,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:13:28,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031783382] [2021-10-28 23:13:28,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031783382] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:13:28,961 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:13:28,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:13:28,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018034995] [2021-10-28 23:13:28,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:13:28,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:13:28,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:13:28,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:13:28,998 INFO L87 Difference]: Start difference. First operand has 141 states, 139 states have (on average 1.7266187050359711) internal successors, (240), 140 states have internal predecessors, (240), 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 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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) [2021-10-28 23:13:29,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:13:29,208 INFO L93 Difference]: Finished difference Result 328 states and 564 transitions. [2021-10-28 23:13:29,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:13:29,210 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 44 [2021-10-28 23:13:29,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:13:29,221 INFO L225 Difference]: With dead ends: 328 [2021-10-28 23:13:29,222 INFO L226 Difference]: Without dead ends: 175 [2021-10-28 23:13:29,225 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:13:29,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-10-28 23:13:29,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 170. [2021-10-28 23:13:29,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 169 states have (on average 1.6272189349112427) internal successors, (275), 169 states have internal predecessors, (275), 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) [2021-10-28 23:13:29,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 275 transitions. [2021-10-28 23:13:29,281 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 275 transitions. Word has length 44 [2021-10-28 23:13:29,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:13:29,282 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 275 transitions. [2021-10-28 23:13:29,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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) [2021-10-28 23:13:29,282 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 275 transitions. [2021-10-28 23:13:29,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-28 23:13:29,285 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:13:29,285 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:13:29,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 23:13:29,286 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:13:29,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:13:29,287 INFO L85 PathProgramCache]: Analyzing trace with hash -954576436, now seen corresponding path program 1 times [2021-10-28 23:13:29,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:13:29,288 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997934155] [2021-10-28 23:13:29,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:13:29,288 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:13:29,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:13:29,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:13:29,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:13:29,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997934155] [2021-10-28 23:13:29,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997934155] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:13:29,369 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:13:29,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:13:29,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317597277] [2021-10-28 23:13:29,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:13:29,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:13:29,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:13:29,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:13:29,373 INFO L87 Difference]: Start difference. First operand 170 states and 275 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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) [2021-10-28 23:13:29,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:13:29,571 INFO L93 Difference]: Finished difference Result 380 states and 624 transitions. [2021-10-28 23:13:29,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:13:29,572 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 45 [2021-10-28 23:13:29,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:13:29,579 INFO L225 Difference]: With dead ends: 380 [2021-10-28 23:13:29,579 INFO L226 Difference]: Without dead ends: 216 [2021-10-28 23:13:29,585 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:13:29,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-10-28 23:13:29,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 211. [2021-10-28 23:13:29,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 210 states have (on average 1.6761904761904762) internal successors, (352), 210 states have internal predecessors, (352), 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) [2021-10-28 23:13:29,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 352 transitions. [2021-10-28 23:13:29,621 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 352 transitions. Word has length 45 [2021-10-28 23:13:29,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:13:29,622 INFO L470 AbstractCegarLoop]: Abstraction has 211 states and 352 transitions. [2021-10-28 23:13:29,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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) [2021-10-28 23:13:29,622 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 352 transitions. [2021-10-28 23:13:29,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-10-28 23:13:29,631 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:13:29,631 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:13:29,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 23:13:29,633 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:13:29,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:13:29,634 INFO L85 PathProgramCache]: Analyzing trace with hash 2071968837, now seen corresponding path program 1 times [2021-10-28 23:13:29,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:13:29,635 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728863919] [2021-10-28 23:13:29,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:13:29,635 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:13:29,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:13:29,733 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:13:29,733 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:13:29,734 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728863919] [2021-10-28 23:13:29,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728863919] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:13:29,734 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:13:29,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:13:29,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970601023] [2021-10-28 23:13:29,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:13:29,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:13:29,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:13:29,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:13:29,737 INFO L87 Difference]: Start difference. First operand 211 states and 352 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2021-10-28 23:13:29,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:13:29,900 INFO L93 Difference]: Finished difference Result 445 states and 750 transitions. [2021-10-28 23:13:29,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:13:29,901 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 72 [2021-10-28 23:13:29,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:13:29,903 INFO L225 Difference]: With dead ends: 445 [2021-10-28 23:13:29,903 INFO L226 Difference]: Without dead ends: 242 [2021-10-28 23:13:29,905 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:13:29,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-10-28 23:13:29,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2021-10-28 23:13:29,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 241 states have (on average 1.6929460580912863) internal successors, (408), 241 states have internal predecessors, (408), 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) [2021-10-28 23:13:29,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 408 transitions. [2021-10-28 23:13:29,942 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 408 transitions. Word has length 72 [2021-10-28 23:13:29,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:13:29,942 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 408 transitions. [2021-10-28 23:13:29,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2021-10-28 23:13:29,943 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 408 transitions. [2021-10-28 23:13:29,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-10-28 23:13:29,946 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:13:29,946 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:13:29,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 23:13:29,946 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:13:29,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:13:29,947 INFO L85 PathProgramCache]: Analyzing trace with hash -947039589, now seen corresponding path program 1 times [2021-10-28 23:13:29,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:13:29,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337737761] [2021-10-28 23:13:29,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:13:29,948 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:13:29,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:13:30,047 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-10-28 23:13:30,048 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:13:30,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337737761] [2021-10-28 23:13:30,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337737761] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:13:30,048 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:13:30,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:13:30,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379165375] [2021-10-28 23:13:30,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:13:30,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:13:30,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:13:30,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:13:30,051 INFO L87 Difference]: Start difference. First operand 242 states and 408 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2021-10-28 23:13:30,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:13:30,169 INFO L93 Difference]: Finished difference Result 493 states and 832 transitions. [2021-10-28 23:13:30,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:13:30,170 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 84 [2021-10-28 23:13:30,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:13:30,173 INFO L225 Difference]: With dead ends: 493 [2021-10-28 23:13:30,173 INFO L226 Difference]: Without dead ends: 259 [2021-10-28 23:13:30,175 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:13:30,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2021-10-28 23:13:30,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 257. [2021-10-28 23:13:30,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 256 states have (on average 1.68359375) internal successors, (431), 256 states have internal predecessors, (431), 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) [2021-10-28 23:13:30,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 431 transitions. [2021-10-28 23:13:30,191 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 431 transitions. Word has length 84 [2021-10-28 23:13:30,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:13:30,192 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 431 transitions. [2021-10-28 23:13:30,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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) [2021-10-28 23:13:30,192 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 431 transitions. [2021-10-28 23:13:30,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-10-28 23:13:30,199 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:13:30,199 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:13:30,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 23:13:30,200 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:13:30,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:13:30,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1168944985, now seen corresponding path program 1 times [2021-10-28 23:13:30,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:13:30,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481399843] [2021-10-28 23:13:30,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:13:30,203 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:13:30,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:13:30,308 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:13:30,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:13:30,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481399843] [2021-10-28 23:13:30,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481399843] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:13:30,309 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:13:30,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:13:30,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072360452] [2021-10-28 23:13:30,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:13:30,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:13:30,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:13:30,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:13:30,312 INFO L87 Difference]: Start difference. First operand 257 states and 431 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2021-10-28 23:13:30,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:13:30,484 INFO L93 Difference]: Finished difference Result 552 states and 931 transitions. [2021-10-28 23:13:30,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:13:30,484 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 84 [2021-10-28 23:13:30,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:13:30,490 INFO L225 Difference]: With dead ends: 552 [2021-10-28 23:13:30,491 INFO L226 Difference]: Without dead ends: 303 [2021-10-28 23:13:30,491 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:13:30,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-10-28 23:13:30,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 299. [2021-10-28 23:13:30,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 298 states have (on average 1.6946308724832215) internal successors, (505), 298 states have internal predecessors, (505), 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) [2021-10-28 23:13:30,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 505 transitions. [2021-10-28 23:13:30,506 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 505 transitions. Word has length 84 [2021-10-28 23:13:30,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:13:30,507 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 505 transitions. [2021-10-28 23:13:30,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2021-10-28 23:13:30,509 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 505 transitions. [2021-10-28 23:13:30,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-10-28 23:13:30,512 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:13:30,512 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:13:30,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 23:13:30,513 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:13:30,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:13:30,514 INFO L85 PathProgramCache]: Analyzing trace with hash 2129818626, now seen corresponding path program 1 times [2021-10-28 23:13:30,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:13:30,515 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749621162] [2021-10-28 23:13:30,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:13:30,515 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:13:30,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:13:30,591 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-10-28 23:13:30,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:13:30,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749621162] [2021-10-28 23:13:30,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749621162] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:13:30,592 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:13:30,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:13:30,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534072820] [2021-10-28 23:13:30,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:13:30,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:13:30,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:13:30,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:13:30,595 INFO L87 Difference]: Start difference. First operand 299 states and 505 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2021-10-28 23:13:30,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:13:30,699 INFO L93 Difference]: Finished difference Result 592 states and 1000 transitions. [2021-10-28 23:13:30,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:13:30,707 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 85 [2021-10-28 23:13:30,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:13:30,711 INFO L225 Difference]: With dead ends: 592 [2021-10-28 23:13:30,711 INFO L226 Difference]: Without dead ends: 301 [2021-10-28 23:13:30,712 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:13:30,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2021-10-28 23:13:30,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 299. [2021-10-28 23:13:30,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 298 states have (on average 1.6812080536912752) internal successors, (501), 298 states have internal predecessors, (501), 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) [2021-10-28 23:13:30,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 501 transitions. [2021-10-28 23:13:30,726 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 501 transitions. Word has length 85 [2021-10-28 23:13:30,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:13:30,727 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 501 transitions. [2021-10-28 23:13:30,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2021-10-28 23:13:30,727 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 501 transitions. [2021-10-28 23:13:30,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-10-28 23:13:30,728 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:13:30,729 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:13:30,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 23:13:30,729 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:13:30,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:13:30,730 INFO L85 PathProgramCache]: Analyzing trace with hash -122958423, now seen corresponding path program 1 times [2021-10-28 23:13:30,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:13:30,735 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614441332] [2021-10-28 23:13:30,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:13:30,735 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:13:30,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:13:30,799 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:13:30,799 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:13:30,800 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614441332] [2021-10-28 23:13:30,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614441332] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:13:30,800 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:13:30,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:13:30,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381126990] [2021-10-28 23:13:30,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:13:30,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:13:30,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:13:30,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:13:30,802 INFO L87 Difference]: Start difference. First operand 299 states and 501 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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) [2021-10-28 23:13:30,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:13:30,934 INFO L93 Difference]: Finished difference Result 594 states and 995 transitions. [2021-10-28 23:13:30,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:13:30,935 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 85 [2021-10-28 23:13:30,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:13:30,938 INFO L225 Difference]: With dead ends: 594 [2021-10-28 23:13:30,938 INFO L226 Difference]: Without dead ends: 301 [2021-10-28 23:13:30,939 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:13:30,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2021-10-28 23:13:30,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 297. [2021-10-28 23:13:30,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 296 states have (on average 1.6756756756756757) internal successors, (496), 296 states have internal predecessors, (496), 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) [2021-10-28 23:13:30,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 496 transitions. [2021-10-28 23:13:30,950 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 496 transitions. Word has length 85 [2021-10-28 23:13:30,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:13:30,951 INFO L470 AbstractCegarLoop]: Abstraction has 297 states and 496 transitions. [2021-10-28 23:13:30,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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) [2021-10-28 23:13:30,951 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 496 transitions. [2021-10-28 23:13:30,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-10-28 23:13:30,952 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:13:30,953 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:13:30,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 23:13:30,953 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:13:30,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:13:30,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1553184093, now seen corresponding path program 1 times [2021-10-28 23:13:30,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:13:30,954 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010242109] [2021-10-28 23:13:30,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:13:30,954 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:13:30,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:13:31,011 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-10-28 23:13:31,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:13:31,011 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010242109] [2021-10-28 23:13:31,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010242109] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:13:31,012 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:13:31,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:13:31,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217502107] [2021-10-28 23:13:31,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:13:31,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:13:31,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:13:31,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:13:31,015 INFO L87 Difference]: Start difference. First operand 297 states and 496 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2021-10-28 23:13:31,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:13:31,113 INFO L93 Difference]: Finished difference Result 595 states and 992 transitions. [2021-10-28 23:13:31,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:13:31,114 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 97 [2021-10-28 23:13:31,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:13:31,116 INFO L225 Difference]: With dead ends: 595 [2021-10-28 23:13:31,117 INFO L226 Difference]: Without dead ends: 306 [2021-10-28 23:13:31,117 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:13:31,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2021-10-28 23:13:31,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 306. [2021-10-28 23:13:31,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 305 states have (on average 1.6459016393442623) internal successors, (502), 305 states have internal predecessors, (502), 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) [2021-10-28 23:13:31,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 502 transitions. [2021-10-28 23:13:31,134 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 502 transitions. Word has length 97 [2021-10-28 23:13:31,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:13:31,134 INFO L470 AbstractCegarLoop]: Abstraction has 306 states and 502 transitions. [2021-10-28 23:13:31,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2021-10-28 23:13:31,135 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 502 transitions. [2021-10-28 23:13:31,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-10-28 23:13:31,136 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:13:31,136 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:13:31,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-28 23:13:31,137 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:13:31,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:13:31,137 INFO L85 PathProgramCache]: Analyzing trace with hash -2083521026, now seen corresponding path program 1 times [2021-10-28 23:13:31,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:13:31,138 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72169087] [2021-10-28 23:13:31,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:13:31,138 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:13:31,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:13:31,184 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-10-28 23:13:31,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:13:31,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72169087] [2021-10-28 23:13:31,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72169087] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:13:31,185 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:13:31,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:13:31,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42910449] [2021-10-28 23:13:31,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:13:31,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:13:31,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:13:31,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:13:31,196 INFO L87 Difference]: Start difference. First operand 306 states and 502 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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) [2021-10-28 23:13:31,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:13:31,335 INFO L93 Difference]: Finished difference Result 635 states and 1045 transitions. [2021-10-28 23:13:31,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:13:31,337 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 98 [2021-10-28 23:13:31,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:13:31,340 INFO L225 Difference]: With dead ends: 635 [2021-10-28 23:13:31,342 INFO L226 Difference]: Without dead ends: 337 [2021-10-28 23:13:31,342 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:13:31,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2021-10-28 23:13:31,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 335. [2021-10-28 23:13:31,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 334 states have (on average 1.6437125748502994) internal successors, (549), 334 states have internal predecessors, (549), 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) [2021-10-28 23:13:31,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 549 transitions. [2021-10-28 23:13:31,356 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 549 transitions. Word has length 98 [2021-10-28 23:13:31,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:13:31,356 INFO L470 AbstractCegarLoop]: Abstraction has 335 states and 549 transitions. [2021-10-28 23:13:31,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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) [2021-10-28 23:13:31,357 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 549 transitions. [2021-10-28 23:13:31,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-10-28 23:13:31,358 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:13:31,358 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:13:31,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-28 23:13:31,359 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:13:31,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:13:31,359 INFO L85 PathProgramCache]: Analyzing trace with hash -102460539, now seen corresponding path program 1 times [2021-10-28 23:13:31,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:13:31,361 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618556328] [2021-10-28 23:13:31,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:13:31,361 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:13:31,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:13:31,410 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-10-28 23:13:31,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:13:31,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618556328] [2021-10-28 23:13:31,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618556328] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:13:31,411 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:13:31,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:13:31,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999222076] [2021-10-28 23:13:31,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:13:31,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:13:31,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:13:31,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:13:31,413 INFO L87 Difference]: Start difference. First operand 335 states and 549 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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) [2021-10-28 23:13:31,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:13:31,550 INFO L93 Difference]: Finished difference Result 664 states and 1088 transitions. [2021-10-28 23:13:31,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:13:31,551 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 99 [2021-10-28 23:13:31,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:13:31,553 INFO L225 Difference]: With dead ends: 664 [2021-10-28 23:13:31,553 INFO L226 Difference]: Without dead ends: 337 [2021-10-28 23:13:31,554 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:13:31,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2021-10-28 23:13:31,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 335. [2021-10-28 23:13:31,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 334 states have (on average 1.6317365269461077) internal successors, (545), 334 states have internal predecessors, (545), 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) [2021-10-28 23:13:31,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 545 transitions. [2021-10-28 23:13:31,567 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 545 transitions. Word has length 99 [2021-10-28 23:13:31,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:13:31,568 INFO L470 AbstractCegarLoop]: Abstraction has 335 states and 545 transitions. [2021-10-28 23:13:31,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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) [2021-10-28 23:13:31,568 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 545 transitions. [2021-10-28 23:13:31,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-28 23:13:31,569 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:13:31,570 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:13:31,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-28 23:13:31,570 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:13:31,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:13:31,571 INFO L85 PathProgramCache]: Analyzing trace with hash -651386898, now seen corresponding path program 1 times [2021-10-28 23:13:31,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:13:31,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187768829] [2021-10-28 23:13:31,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:13:31,571 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:13:31,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:13:31,604 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-10-28 23:13:31,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:13:31,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187768829] [2021-10-28 23:13:31,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187768829] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:13:31,605 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:13:31,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:13:31,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96508764] [2021-10-28 23:13:31,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:13:31,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:13:31,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:13:31,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:13:31,606 INFO L87 Difference]: Start difference. First operand 335 states and 545 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2021-10-28 23:13:31,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:13:31,747 INFO L93 Difference]: Finished difference Result 697 states and 1138 transitions. [2021-10-28 23:13:31,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:13:31,747 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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 100 [2021-10-28 23:13:31,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:13:31,750 INFO L225 Difference]: With dead ends: 697 [2021-10-28 23:13:31,750 INFO L226 Difference]: Without dead ends: 370 [2021-10-28 23:13:31,751 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:13:31,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2021-10-28 23:13:31,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 362. [2021-10-28 23:13:31,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 361 states have (on average 1.626038781163435) internal successors, (587), 361 states have internal predecessors, (587), 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) [2021-10-28 23:13:31,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 587 transitions. [2021-10-28 23:13:31,766 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 587 transitions. Word has length 100 [2021-10-28 23:13:31,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:13:31,767 INFO L470 AbstractCegarLoop]: Abstraction has 362 states and 587 transitions. [2021-10-28 23:13:31,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2021-10-28 23:13:31,767 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 587 transitions. [2021-10-28 23:13:31,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-10-28 23:13:31,769 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:13:31,769 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:13:31,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-28 23:13:31,769 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:13:31,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:13:31,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1258189035, now seen corresponding path program 1 times [2021-10-28 23:13:31,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:13:31,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654729044] [2021-10-28 23:13:31,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:13:31,770 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:13:31,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:13:31,803 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-10-28 23:13:31,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:13:31,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654729044] [2021-10-28 23:13:31,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654729044] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:13:31,804 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:13:31,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:13:31,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894975567] [2021-10-28 23:13:31,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:13:31,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:13:31,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:13:31,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:13:31,806 INFO L87 Difference]: Start difference. First operand 362 states and 587 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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) [2021-10-28 23:13:31,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:13:31,945 INFO L93 Difference]: Finished difference Result 724 states and 1175 transitions. [2021-10-28 23:13:31,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:13:31,946 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 101 [2021-10-28 23:13:31,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:13:31,949 INFO L225 Difference]: With dead ends: 724 [2021-10-28 23:13:31,949 INFO L226 Difference]: Without dead ends: 370 [2021-10-28 23:13:31,950 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:13:31,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2021-10-28 23:13:31,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 362. [2021-10-28 23:13:31,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 361 states have (on average 1.6121883656509695) internal successors, (582), 361 states have internal predecessors, (582), 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) [2021-10-28 23:13:31,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 582 transitions. [2021-10-28 23:13:31,966 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 582 transitions. Word has length 101 [2021-10-28 23:13:31,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:13:31,967 INFO L470 AbstractCegarLoop]: Abstraction has 362 states and 582 transitions. [2021-10-28 23:13:31,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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) [2021-10-28 23:13:31,967 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 582 transitions. [2021-10-28 23:13:31,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-28 23:13:31,969 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:13:31,969 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:13:31,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-28 23:13:31,969 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:13:31,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:13:31,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1027805126, now seen corresponding path program 1 times [2021-10-28 23:13:31,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:13:31,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829920709] [2021-10-28 23:13:31,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:13:31,970 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:13:31,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:13:32,002 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-10-28 23:13:32,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:13:32,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829920709] [2021-10-28 23:13:32,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829920709] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:13:32,003 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:13:32,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:13:32,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046318803] [2021-10-28 23:13:32,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:13:32,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:13:32,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:13:32,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:13:32,005 INFO L87 Difference]: Start difference. First operand 362 states and 582 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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) [2021-10-28 23:13:32,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:13:32,133 INFO L93 Difference]: Finished difference Result 742 states and 1195 transitions. [2021-10-28 23:13:32,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:13:32,133 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 105 [2021-10-28 23:13:32,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:13:32,136 INFO L225 Difference]: With dead ends: 742 [2021-10-28 23:13:32,136 INFO L226 Difference]: Without dead ends: 388 [2021-10-28 23:13:32,137 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:13:32,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2021-10-28 23:13:32,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 383. [2021-10-28 23:13:32,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 1.5994764397905759) internal successors, (611), 382 states have internal predecessors, (611), 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) [2021-10-28 23:13:32,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 611 transitions. [2021-10-28 23:13:32,154 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 611 transitions. Word has length 105 [2021-10-28 23:13:32,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:13:32,154 INFO L470 AbstractCegarLoop]: Abstraction has 383 states and 611 transitions. [2021-10-28 23:13:32,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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) [2021-10-28 23:13:32,154 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 611 transitions. [2021-10-28 23:13:32,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-10-28 23:13:32,156 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:13:32,156 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:13:32,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-28 23:13:32,157 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:13:32,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:13:32,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1570072403, now seen corresponding path program 1 times [2021-10-28 23:13:32,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:13:32,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796332440] [2021-10-28 23:13:32,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:13:32,158 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:13:32,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:13:32,188 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-10-28 23:13:32,188 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:13:32,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796332440] [2021-10-28 23:13:32,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796332440] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:13:32,189 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:13:32,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:13:32,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103402454] [2021-10-28 23:13:32,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:13:32,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:13:32,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:13:32,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:13:32,190 INFO L87 Difference]: Start difference. First operand 383 states and 611 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2021-10-28 23:13:32,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:13:32,312 INFO L93 Difference]: Finished difference Result 763 states and 1218 transitions. [2021-10-28 23:13:32,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:13:32,312 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 106 [2021-10-28 23:13:32,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:13:32,315 INFO L225 Difference]: With dead ends: 763 [2021-10-28 23:13:32,315 INFO L226 Difference]: Without dead ends: 388 [2021-10-28 23:13:32,316 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:13:32,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2021-10-28 23:13:32,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 383. [2021-10-28 23:13:32,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 1.5837696335078535) internal successors, (605), 382 states have internal predecessors, (605), 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) [2021-10-28 23:13:32,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 605 transitions. [2021-10-28 23:13:32,333 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 605 transitions. Word has length 106 [2021-10-28 23:13:32,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:13:32,334 INFO L470 AbstractCegarLoop]: Abstraction has 383 states and 605 transitions. [2021-10-28 23:13:32,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2021-10-28 23:13:32,334 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 605 transitions. [2021-10-28 23:13:32,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-10-28 23:13:32,336 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:13:32,336 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:13:32,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-28 23:13:32,336 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:13:32,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:13:32,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1383340250, now seen corresponding path program 1 times [2021-10-28 23:13:32,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:13:32,337 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119280861] [2021-10-28 23:13:32,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:13:32,337 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:13:32,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:13:32,374 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:13:32,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:13:32,485 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:13:32,485 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 23:13:32,486 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:13:32,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-28 23:13:32,491 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:13:32,494 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:13:32,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:13:32 BoogieIcfgContainer [2021-10-28 23:13:32,628 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:13:32,629 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:13:32,629 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:13:32,629 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:13:32,629 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:13:28" (3/4) ... [2021-10-28 23:13:32,631 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-28 23:13:32,751 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c17124-3dc9-42ee-a7df-3bdb15d68dc2/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:13:32,751 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:13:32,753 INFO L168 Benchmark]: Toolchain (without parser) took 5574.79 ms. Allocated memory was 100.7 MB in the beginning and 161.5 MB in the end (delta: 60.8 MB). Free memory was 67.3 MB in the beginning and 102.9 MB in the end (delta: -35.6 MB). Peak memory consumption was 25.7 MB. Max. memory is 16.1 GB. [2021-10-28 23:13:32,753 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 100.7 MB. Free memory is still 53.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:13:32,754 INFO L168 Benchmark]: CACSL2BoogieTranslator took 418.30 ms. Allocated memory is still 100.7 MB. Free memory was 67.1 MB in the beginning and 72.1 MB in the end (delta: -5.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:13:32,755 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.56 ms. Allocated memory is still 100.7 MB. Free memory was 72.1 MB in the beginning and 69.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:13:32,755 INFO L168 Benchmark]: Boogie Preprocessor took 45.95 ms. Allocated memory is still 100.7 MB. Free memory was 69.3 MB in the beginning and 67.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:13:32,755 INFO L168 Benchmark]: RCFGBuilder took 855.45 ms. Allocated memory was 100.7 MB in the beginning and 134.2 MB in the end (delta: 33.6 MB). Free memory was 67.2 MB in the beginning and 101.2 MB in the end (delta: -34.0 MB). Peak memory consumption was 29.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:13:32,756 INFO L168 Benchmark]: TraceAbstraction took 4053.96 ms. Allocated memory was 134.2 MB in the beginning and 161.5 MB in the end (delta: 27.3 MB). Free memory was 100.4 MB in the beginning and 117.7 MB in the end (delta: -17.3 MB). Peak memory consumption was 83.0 MB. Max. memory is 16.1 GB. [2021-10-28 23:13:32,756 INFO L168 Benchmark]: Witness Printer took 122.39 ms. Allocated memory is still 161.5 MB. Free memory was 117.7 MB in the beginning and 102.9 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-28 23:13:32,759 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 100.7 MB. Free memory is still 53.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 418.30 ms. Allocated memory is still 100.7 MB. Free memory was 67.1 MB in the beginning and 72.1 MB in the end (delta: -5.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 62.56 ms. Allocated memory is still 100.7 MB. Free memory was 72.1 MB in the beginning and 69.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 45.95 ms. Allocated memory is still 100.7 MB. Free memory was 69.3 MB in the beginning and 67.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 855.45 ms. Allocated memory was 100.7 MB in the beginning and 134.2 MB in the end (delta: 33.6 MB). Free memory was 67.2 MB in the beginning and 101.2 MB in the end (delta: -34.0 MB). Peak memory consumption was 29.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4053.96 ms. Allocated memory was 134.2 MB in the beginning and 161.5 MB in the end (delta: 27.3 MB). Free memory was 100.4 MB in the beginning and 117.7 MB in the end (delta: -17.3 MB). Peak memory consumption was 83.0 MB. Max. memory is 16.1 GB. * Witness Printer took 122.39 ms. Allocated memory is still 161.5 MB. Free memory was 117.7 MB in the beginning and 102.9 MB in the end (delta: 14.8 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 619]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L624] int s ; [L625] int tmp ; [L629] s = 8464 [L23] int s__info_callback = __VERIFIER_nondet_int() ; [L24] int s__in_handshake = __VERIFIER_nondet_int() ; [L25] int s__state ; [L26] int s__new_session ; [L27] int s__server ; [L28] int s__version = __VERIFIER_nondet_int() ; [L29] int s__type ; [L30] int s__init_num ; [L31] int s__hit = __VERIFIER_nondet_int() ; [L32] int s__rwstate ; [L33] int s__init_buf___0 = 1; [L34] int s__debug = __VERIFIER_nondet_int() ; [L35] int s__shutdown ; [L36] int s__cert = __VERIFIER_nondet_int() ; [L37] int s__options = __VERIFIER_nondet_int() ; [L38] int s__verify_mode = __VERIFIER_nondet_int() ; [L39] int s__session__peer = __VERIFIER_nondet_int() ; [L40] int s__cert__pkeys__AT0__privatekey = __VERIFIER_nondet_int() ; [L41] int s__ctx__info_callback = __VERIFIER_nondet_int() ; [L42] int s__ctx__stats__sess_accept_renegotiate = __VERIFIER_nondet_int() ; [L43] int s__ctx__stats__sess_accept = __VERIFIER_nondet_int() ; [L44] int s__ctx__stats__sess_accept_good = __VERIFIER_nondet_int() ; [L45] int s__s3__tmp__cert_request ; [L46] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int() ; [L47] int s__s3__tmp__use_rsa_tmp ; [L48] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int() ; [L49] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() ; [L50] int s__s3__tmp__next_state___0 ; [L51] int s__s3__tmp__new_cipher__algo_strength = __VERIFIER_nondet_int() ; [L52] int s__session__cipher ; [L53] int buf ; [L54] unsigned long l ; [L55] unsigned long Time ; [L56] unsigned long tmp ; [L57] int cb ; [L58] long num1 = __VERIFIER_nondet_long() ; [L59] int ret ; [L60] int new_state ; [L61] int state ; [L62] int skip ; [L63] int got_new_session ; [L64] int tmp___1 = __VERIFIER_nondet_int() ; [L65] int tmp___2 = __VERIFIER_nondet_int() ; [L66] int tmp___3 = __VERIFIER_nondet_int() ; [L67] int tmp___4 = __VERIFIER_nondet_int() ; [L68] int tmp___5 = __VERIFIER_nondet_int() ; [L69] int tmp___6 = __VERIFIER_nondet_int() ; [L70] int tmp___7 ; [L71] long tmp___8 = __VERIFIER_nondet_long() ; [L72] int tmp___9 = __VERIFIER_nondet_int() ; [L73] int tmp___10 = __VERIFIER_nondet_int() ; [L74] int blastFlag ; [L75] int __cil_tmp55 ; [L76] unsigned long __cil_tmp56 ; [L77] unsigned long __cil_tmp57 ; [L78] unsigned long __cil_tmp58 ; [L79] unsigned long __cil_tmp59 ; [L80] int __cil_tmp60 ; [L81] unsigned long __cil_tmp61 ; [L85] s__state = initial_state [L86] blastFlag = 0 [L87] tmp = __VERIFIER_nondet_int() [L88] Time = tmp [L89] cb = 0 [L90] ret = -1 [L91] skip = 0 [L92] got_new_session = 0 [L93] COND TRUE s__info_callback != 0 [L94] cb = s__info_callback [L100] s__in_handshake ++ [L101] COND FALSE !(tmp___1 + 12288) [L106] COND FALSE !(s__cert == 0) [L110] COND TRUE 1 [L112] state = s__state [L113] COND FALSE !(s__state == 12292) [L116] COND FALSE !(s__state == 16384) [L119] COND FALSE !(s__state == 8192) [L122] COND FALSE !(s__state == 24576) [L125] COND FALSE !(s__state == 8195) [L128] COND FALSE !(s__state == 8480) [L131] COND FALSE !(s__state == 8481) [L134] COND FALSE !(s__state == 8482) [L137] COND TRUE s__state == 8464 [L283] s__shutdown = 0 [L284] ret = __VERIFIER_nondet_int() [L285] COND TRUE blastFlag == 0 [L286] blastFlag = 1 [L288] COND FALSE !(ret <= 0) [L291] got_new_session = 1 [L292] s__state = 8496 [L293] s__init_num = 0 [L591] COND FALSE !(! s__s3__tmp__reuse_message) [L608] skip = 0 [L110] COND TRUE 1 [L112] state = s__state [L113] COND FALSE !(s__state == 12292) [L116] COND FALSE !(s__state == 16384) [L119] COND FALSE !(s__state == 8192) [L122] COND FALSE !(s__state == 24576) [L125] COND FALSE !(s__state == 8195) [L128] COND FALSE !(s__state == 8480) [L131] COND FALSE !(s__state == 8481) [L134] COND FALSE !(s__state == 8482) [L137] COND FALSE !(s__state == 8464) [L140] COND FALSE !(s__state == 8465) [L143] COND FALSE !(s__state == 8466) [L146] COND TRUE s__state == 8496 [L297] ret = __VERIFIER_nondet_int() [L298] COND TRUE blastFlag == 1 [L299] blastFlag = 2 [L305] COND FALSE !(ret <= 0) [L308] COND TRUE \read(s__hit) [L309] s__state = 8656 [L313] s__init_num = 0 [L591] COND FALSE !(! s__s3__tmp__reuse_message) [L608] skip = 0 [L110] COND TRUE 1 [L112] state = s__state [L113] COND FALSE !(s__state == 12292) [L116] COND FALSE !(s__state == 16384) [L119] COND FALSE !(s__state == 8192) [L122] COND FALSE !(s__state == 24576) [L125] COND FALSE !(s__state == 8195) [L128] COND FALSE !(s__state == 8480) [L131] COND FALSE !(s__state == 8481) [L134] COND FALSE !(s__state == 8482) [L137] COND FALSE !(s__state == 8464) [L140] COND FALSE !(s__state == 8465) [L143] COND FALSE !(s__state == 8466) [L146] COND FALSE !(s__state == 8496) [L149] COND FALSE !(s__state == 8497) [L152] COND FALSE !(s__state == 8512) [L155] COND FALSE !(s__state == 8513) [L158] COND FALSE !(s__state == 8528) [L161] COND FALSE !(s__state == 8529) [L164] COND FALSE !(s__state == 8544) [L167] COND FALSE !(s__state == 8545) [L170] COND FALSE !(s__state == 8560) [L173] COND FALSE !(s__state == 8561) [L176] COND FALSE !(s__state == 8448) [L179] COND FALSE !(s__state == 8576) [L182] COND FALSE !(s__state == 8577) [L185] COND FALSE !(s__state == 8592) [L188] COND FALSE !(s__state == 8593) [L191] COND FALSE !(s__state == 8608) [L194] COND FALSE !(s__state == 8609) [L197] COND FALSE !(s__state == 8640) [L200] COND FALSE !(s__state == 8641) [L203] COND TRUE s__state == 8656 [L502] s__session__cipher = s__s3__tmp__new_cipher [L503] COND FALSE !(! tmp___9) [L507] ret = __VERIFIER_nondet_int() [L508] COND TRUE blastFlag == 2 [L509] blastFlag = 3 [L511] COND FALSE !(ret <= 0) [L514] s__state = 8672 [L515] s__init_num = 0 [L516] COND FALSE !(! tmp___10) [L591] COND FALSE !(! s__s3__tmp__reuse_message) [L608] skip = 0 [L110] COND TRUE 1 [L112] state = s__state [L113] COND FALSE !(s__state == 12292) [L116] COND FALSE !(s__state == 16384) [L119] COND FALSE !(s__state == 8192) [L122] COND FALSE !(s__state == 24576) [L125] COND FALSE !(s__state == 8195) [L128] COND FALSE !(s__state == 8480) [L131] COND FALSE !(s__state == 8481) [L134] COND FALSE !(s__state == 8482) [L137] COND FALSE !(s__state == 8464) [L140] COND FALSE !(s__state == 8465) [L143] COND FALSE !(s__state == 8466) [L146] COND FALSE !(s__state == 8496) [L149] COND FALSE !(s__state == 8497) [L152] COND FALSE !(s__state == 8512) [L155] COND FALSE !(s__state == 8513) [L158] COND FALSE !(s__state == 8528) [L161] COND FALSE !(s__state == 8529) [L164] COND FALSE !(s__state == 8544) [L167] COND FALSE !(s__state == 8545) [L170] COND FALSE !(s__state == 8560) [L173] COND FALSE !(s__state == 8561) [L176] COND FALSE !(s__state == 8448) [L179] COND FALSE !(s__state == 8576) [L182] COND FALSE !(s__state == 8577) [L185] COND FALSE !(s__state == 8592) [L188] COND FALSE !(s__state == 8593) [L191] COND FALSE !(s__state == 8608) [L194] COND FALSE !(s__state == 8609) [L197] COND FALSE !(s__state == 8640) [L200] COND FALSE !(s__state == 8641) [L203] COND FALSE !(s__state == 8656) [L206] COND FALSE !(s__state == 8657) [L209] COND TRUE s__state == 8672 [L523] ret = __VERIFIER_nondet_int() [L524] COND TRUE blastFlag == 3 [L619] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 141 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.8s, OverallIterations: 15, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 1835 SDtfs, 2038 SDslu, 248 SDs, 0 SdLazy, 1321 SolverSat, 599 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=383occurred in iteration=13, InterpolantAutomatonStates: 42, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 14 MinimizatonAttempts, 52 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 1326 NumberOfCodeBlocks, 1326 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 1191 ConstructedInterpolants, 0 QuantifiedInterpolants, 2250 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 636/636 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! [2021-10-28 23:13:32,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66c17124-3dc9-42ee-a7df-3bdb15d68dc2/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...