./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/psyco/psyco_security.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b152b34a-71ca-4c5a-acd9-2e2cde73da2e/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b152b34a-71ca-4c5a-acd9-2e2cde73da2e/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b152b34a-71ca-4c5a-acd9-2e2cde73da2e/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b152b34a-71ca-4c5a-acd9-2e2cde73da2e/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/psyco/psyco_security.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b152b34a-71ca-4c5a-acd9-2e2cde73da2e/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b152b34a-71ca-4c5a-acd9-2e2cde73da2e/bin/utaipan-mTDlp9Zugs --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d4a7e0762948cbc310fcf63fb24dcbf7ee6356cb ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:30:22,304 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:30:22,306 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:30:22,349 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:30:22,349 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:30:22,355 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:30:22,357 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:30:22,362 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:30:22,364 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:30:22,372 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:30:22,373 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:30:22,375 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:30:22,376 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:30:22,379 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:30:22,381 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:30:22,387 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:30:22,389 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:30:22,390 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:30:22,393 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:30:22,403 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:30:22,405 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:30:22,407 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:30:22,410 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:30:22,412 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:30:22,416 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:30:22,416 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:30:22,417 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:30:22,419 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:30:22,419 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:30:22,421 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:30:22,421 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:30:22,422 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:30:22,424 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:30:22,426 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:30:22,427 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:30:22,428 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:30:22,428 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:30:22,429 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:30:22,429 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:30:22,430 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:30:22,431 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:30:22,432 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b152b34a-71ca-4c5a-acd9-2e2cde73da2e/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 02:30:22,488 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:30:22,488 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:30:22,489 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:30:22,490 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:30:22,490 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:30:22,490 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:30:22,490 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:30:22,491 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:30:22,497 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:30:22,497 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:30:22,498 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:30:22,499 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:30:22,499 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:30:22,499 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:30:22,500 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:30:22,500 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:30:22,501 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:30:22,501 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:30:22,501 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:30:22,501 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:30:22,501 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:30:22,502 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:30:22,502 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:30:22,502 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:30:22,502 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:30:22,502 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:30:22,503 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:30:22,503 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:30:22,503 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:30:22,505 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:30:22,505 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:30:22,505 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:30:22,506 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:30:22,506 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:30:22,506 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:30:22,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:30:22,507 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:30:22,507 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:30:22,507 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:30:22,507 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_b152b34a-71ca-4c5a-acd9-2e2cde73da2e/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b152b34a-71ca-4c5a-acd9-2e2cde73da2e/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d4a7e0762948cbc310fcf63fb24dcbf7ee6356cb [2021-10-16 02:30:22,800 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:30:22,827 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:30:22,830 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:30:22,831 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:30:22,832 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:30:22,833 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b152b34a-71ca-4c5a-acd9-2e2cde73da2e/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/psyco/psyco_security.c [2021-10-16 02:30:22,902 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b152b34a-71ca-4c5a-acd9-2e2cde73da2e/bin/utaipan-mTDlp9Zugs/data/5c890ac6c/1ba7898a0e7b47e494359929cc446f66/FLAG5bff3cdb8 [2021-10-16 02:30:23,423 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:30:23,423 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b152b34a-71ca-4c5a-acd9-2e2cde73da2e/sv-benchmarks/c/psyco/psyco_security.c [2021-10-16 02:30:23,433 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b152b34a-71ca-4c5a-acd9-2e2cde73da2e/bin/utaipan-mTDlp9Zugs/data/5c890ac6c/1ba7898a0e7b47e494359929cc446f66/FLAG5bff3cdb8 [2021-10-16 02:30:23,776 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b152b34a-71ca-4c5a-acd9-2e2cde73da2e/bin/utaipan-mTDlp9Zugs/data/5c890ac6c/1ba7898a0e7b47e494359929cc446f66 [2021-10-16 02:30:23,779 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:30:23,780 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:30:23,782 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:30:23,782 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:30:23,786 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:30:23,786 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:30:23" (1/1) ... [2021-10-16 02:30:23,788 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36ceeeab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:30:23, skipping insertion in model container [2021-10-16 02:30:23,788 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:30:23" (1/1) ... [2021-10-16 02:30:23,795 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:30:23,820 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:30:24,054 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_b152b34a-71ca-4c5a-acd9-2e2cde73da2e/sv-benchmarks/c/psyco/psyco_security.c[12744,12757] [2021-10-16 02:30:24,058 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:30:24,067 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:30:24,104 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_b152b34a-71ca-4c5a-acd9-2e2cde73da2e/sv-benchmarks/c/psyco/psyco_security.c[12744,12757] [2021-10-16 02:30:24,105 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:30:24,119 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:30:24,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:30:24 WrapperNode [2021-10-16 02:30:24,120 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:30:24,121 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:30:24,121 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:30:24,121 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:30:24,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:30:24" (1/1) ... [2021-10-16 02:30:24,145 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:30:24" (1/1) ... [2021-10-16 02:30:24,198 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:30:24,199 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:30:24,207 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:30:24,207 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:30:24,217 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:30:24" (1/1) ... [2021-10-16 02:30:24,217 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:30:24" (1/1) ... [2021-10-16 02:30:24,220 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:30:24" (1/1) ... [2021-10-16 02:30:24,220 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:30:24" (1/1) ... [2021-10-16 02:30:24,226 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:30:24" (1/1) ... [2021-10-16 02:30:24,233 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:30:24" (1/1) ... [2021-10-16 02:30:24,235 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:30:24" (1/1) ... [2021-10-16 02:30:24,238 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:30:24,239 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:30:24,240 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:30:24,240 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:30:24,241 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:30:24" (1/1) ... [2021-10-16 02:30:24,256 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:30:24,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b152b34a-71ca-4c5a-acd9-2e2cde73da2e/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:30:24,282 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b152b34a-71ca-4c5a-acd9-2e2cde73da2e/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:30:24,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b152b34a-71ca-4c5a-acd9-2e2cde73da2e/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:30:24,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:30:24,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:30:24,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 02:30:24,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:30:24,715 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:30:24,715 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2021-10-16 02:30:24,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:30:24 BoogieIcfgContainer [2021-10-16 02:30:24,718 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:30:24,720 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:30:24,720 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:30:24,724 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:30:24,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:30:23" (1/3) ... [2021-10-16 02:30:24,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@141eab8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:30:24, skipping insertion in model container [2021-10-16 02:30:24,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:30:24" (2/3) ... [2021-10-16 02:30:24,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@141eab8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:30:24, skipping insertion in model container [2021-10-16 02:30:24,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:30:24" (3/3) ... [2021-10-16 02:30:24,727 INFO L111 eAbstractionObserver]: Analyzing ICFG psyco_security.c [2021-10-16 02:30:24,732 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:30:24,732 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:30:24,783 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:30:24,789 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 02:30:24,790 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:30:24,809 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 74 states have (on average 1.9594594594594594) internal successors, (145), 75 states have internal predecessors, (145), 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) [2021-10-16 02:30:24,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-16 02:30:24,816 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:30:24,816 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:30:24,817 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:30:24,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:30:24,823 INFO L82 PathProgramCache]: Analyzing trace with hash 269823665, now seen corresponding path program 1 times [2021-10-16 02:30:24,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:30:24,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583238184] [2021-10-16 02:30:24,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:30:24,846 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:30:24,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:30:25,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:30:25,073 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:30:25,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583238184] [2021-10-16 02:30:25,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583238184] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:30:25,076 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:30:25,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:30:25,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995421162] [2021-10-16 02:30:25,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 02:30:25,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:30:25,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 02:30:25,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:30:25,117 INFO L87 Difference]: Start difference. First operand has 76 states, 74 states have (on average 1.9594594594594594) internal successors, (145), 75 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-10-16 02:30:25,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:30:25,157 INFO L93 Difference]: Finished difference Result 151 states and 289 transitions. [2021-10-16 02:30:25,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 02:30:25,159 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2021-10-16 02:30:25,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:30:25,174 INFO L225 Difference]: With dead ends: 151 [2021-10-16 02:30:25,174 INFO L226 Difference]: Without dead ends: 73 [2021-10-16 02:30:25,180 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:30:25,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-10-16 02:30:25,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-10-16 02:30:25,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.5) internal successors, (108), 72 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:30:25,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 108 transitions. [2021-10-16 02:30:25,228 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 108 transitions. Word has length 8 [2021-10-16 02:30:25,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:30:25,229 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 108 transitions. [2021-10-16 02:30:25,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-10-16 02:30:25,229 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 108 transitions. [2021-10-16 02:30:25,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-16 02:30:25,231 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:30:25,231 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:30:25,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 02:30:25,232 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:30:25,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:30:25,238 INFO L82 PathProgramCache]: Analyzing trace with hash 307090919, now seen corresponding path program 1 times [2021-10-16 02:30:25,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:30:25,238 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205125203] [2021-10-16 02:30:25,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:30:25,239 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:30:25,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:30:25,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:30:25,301 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:30:25,302 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205125203] [2021-10-16 02:30:25,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205125203] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:30:25,302 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:30:25,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:30:25,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024368237] [2021-10-16 02:30:25,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:30:25,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:30:25,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:30:25,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:30:25,306 INFO L87 Difference]: Start difference. First operand 73 states and 108 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-10-16 02:30:25,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:30:25,407 INFO L93 Difference]: Finished difference Result 148 states and 219 transitions. [2021-10-16 02:30:25,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:30:25,408 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2021-10-16 02:30:25,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:30:25,410 INFO L225 Difference]: With dead ends: 148 [2021-10-16 02:30:25,413 INFO L226 Difference]: Without dead ends: 76 [2021-10-16 02:30:25,415 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:30:25,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-10-16 02:30:25,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2021-10-16 02:30:25,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.48) internal successors, (111), 75 states have internal predecessors, (111), 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) [2021-10-16 02:30:25,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 111 transitions. [2021-10-16 02:30:25,431 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 111 transitions. Word has length 9 [2021-10-16 02:30:25,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:30:25,445 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 111 transitions. [2021-10-16 02:30:25,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-10-16 02:30:25,446 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 111 transitions. [2021-10-16 02:30:25,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-16 02:30:25,447 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:30:25,447 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:30:25,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 02:30:25,448 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:30:25,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:30:25,449 INFO L82 PathProgramCache]: Analyzing trace with hash -1213654828, now seen corresponding path program 1 times [2021-10-16 02:30:25,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:30:25,449 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702061258] [2021-10-16 02:30:25,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:30:25,450 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:30:25,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:30:25,494 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:30:25,494 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:30:25,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702061258] [2021-10-16 02:30:25,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702061258] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:30:25,495 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:30:25,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:30:25,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638030429] [2021-10-16 02:30:25,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:30:25,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:30:25,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:30:25,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:30:25,498 INFO L87 Difference]: Start difference. First operand 76 states and 111 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2021-10-16 02:30:25,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:30:25,560 INFO L93 Difference]: Finished difference Result 156 states and 228 transitions. [2021-10-16 02:30:25,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:30:25,561 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 14 [2021-10-16 02:30:25,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:30:25,562 INFO L225 Difference]: With dead ends: 156 [2021-10-16 02:30:25,563 INFO L226 Difference]: Without dead ends: 82 [2021-10-16 02:30:25,564 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:30:25,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-10-16 02:30:25,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 80. [2021-10-16 02:30:25,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.4556962025316456) internal successors, (115), 79 states have internal predecessors, (115), 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) [2021-10-16 02:30:25,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 115 transitions. [2021-10-16 02:30:25,576 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 115 transitions. Word has length 14 [2021-10-16 02:30:25,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:30:25,577 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 115 transitions. [2021-10-16 02:30:25,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2021-10-16 02:30:25,578 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 115 transitions. [2021-10-16 02:30:25,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-16 02:30:25,578 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:30:25,579 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:30:25,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-16 02:30:25,579 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:30:25,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:30:25,580 INFO L82 PathProgramCache]: Analyzing trace with hash -107735230, now seen corresponding path program 1 times [2021-10-16 02:30:25,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:30:25,581 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37256689] [2021-10-16 02:30:25,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:30:25,581 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:30:25,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:30:25,681 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:30:25,682 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:30:25,682 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37256689] [2021-10-16 02:30:25,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37256689] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:30:25,683 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:30:25,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 02:30:25,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128760132] [2021-10-16 02:30:25,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:30:25,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:30:25,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:30:25,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:30:25,685 INFO L87 Difference]: Start difference. First operand 80 states and 115 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:30:25,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:30:25,844 INFO L93 Difference]: Finished difference Result 253 states and 361 transitions. [2021-10-16 02:30:25,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:30:25,845 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-16 02:30:25,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:30:25,851 INFO L225 Difference]: With dead ends: 253 [2021-10-16 02:30:25,852 INFO L226 Difference]: Without dead ends: 163 [2021-10-16 02:30:25,857 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:30:25,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-10-16 02:30:25,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 128. [2021-10-16 02:30:25,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 1.5196850393700787) internal successors, (193), 127 states have internal predecessors, (193), 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) [2021-10-16 02:30:25,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 193 transitions. [2021-10-16 02:30:25,878 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 193 transitions. Word has length 17 [2021-10-16 02:30:25,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:30:25,878 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 193 transitions. [2021-10-16 02:30:25,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:30:25,881 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 193 transitions. [2021-10-16 02:30:25,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-16 02:30:25,883 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:30:25,884 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:30:25,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-16 02:30:25,884 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:30:25,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:30:25,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1275599573, now seen corresponding path program 1 times [2021-10-16 02:30:25,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:30:25,887 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96547565] [2021-10-16 02:30:25,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:30:25,888 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:30:25,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:30:25,941 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-16 02:30:25,941 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:30:25,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96547565] [2021-10-16 02:30:25,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96547565] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:30:25,942 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:30:25,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:30:25,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289390492] [2021-10-16 02:30:25,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:30:25,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:30:25,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:30:25,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:30:25,944 INFO L87 Difference]: Start difference. First operand 128 states and 193 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2021-10-16 02:30:25,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:30:25,998 INFO L93 Difference]: Finished difference Result 218 states and 334 transitions. [2021-10-16 02:30:25,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:30:25,999 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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 21 [2021-10-16 02:30:26,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:30:26,001 INFO L225 Difference]: With dead ends: 218 [2021-10-16 02:30:26,001 INFO L226 Difference]: Without dead ends: 92 [2021-10-16 02:30:26,003 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:30:26,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-10-16 02:30:26,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2021-10-16 02:30:26,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.5054945054945055) internal successors, (137), 91 states have internal predecessors, (137), 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) [2021-10-16 02:30:26,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 137 transitions. [2021-10-16 02:30:26,016 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 137 transitions. Word has length 21 [2021-10-16 02:30:26,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:30:26,016 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 137 transitions. [2021-10-16 02:30:26,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2021-10-16 02:30:26,023 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 137 transitions. [2021-10-16 02:30:26,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-16 02:30:26,024 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:30:26,025 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:30:26,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-16 02:30:26,026 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:30:26,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:30:26,028 INFO L82 PathProgramCache]: Analyzing trace with hash -922672237, now seen corresponding path program 1 times [2021-10-16 02:30:26,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:30:26,028 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598351851] [2021-10-16 02:30:26,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:30:26,029 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:30:26,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:30:26,092 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-16 02:30:26,092 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:30:26,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598351851] [2021-10-16 02:30:26,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598351851] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:30:26,093 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:30:26,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:30:26,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152073918] [2021-10-16 02:30:26,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:30:26,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:30:26,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:30:26,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:30:26,095 INFO L87 Difference]: Start difference. First operand 92 states and 137 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2021-10-16 02:30:26,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:30:26,148 INFO L93 Difference]: Finished difference Result 178 states and 265 transitions. [2021-10-16 02:30:26,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:30:26,149 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-16 02:30:26,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:30:26,150 INFO L225 Difference]: With dead ends: 178 [2021-10-16 02:30:26,150 INFO L226 Difference]: Without dead ends: 104 [2021-10-16 02:30:26,151 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:30:26,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-10-16 02:30:26,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 94. [2021-10-16 02:30:26,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.4086021505376345) internal successors, (131), 93 states have internal predecessors, (131), 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) [2021-10-16 02:30:26,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 131 transitions. [2021-10-16 02:30:26,159 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 131 transitions. Word has length 25 [2021-10-16 02:30:26,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:30:26,160 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 131 transitions. [2021-10-16 02:30:26,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2021-10-16 02:30:26,160 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 131 transitions. [2021-10-16 02:30:26,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-16 02:30:26,161 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:30:26,161 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:30:26,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-16 02:30:26,162 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:30:26,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:30:26,162 INFO L82 PathProgramCache]: Analyzing trace with hash -1682202286, now seen corresponding path program 1 times [2021-10-16 02:30:26,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:30:26,163 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776297402] [2021-10-16 02:30:26,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:30:26,163 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:30:26,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:30:26,195 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-16 02:30:26,196 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:30:26,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776297402] [2021-10-16 02:30:26,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776297402] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:30:26,196 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:30:26,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:30:26,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727811382] [2021-10-16 02:30:26,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:30:26,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:30:26,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:30:26,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:30:26,198 INFO L87 Difference]: Start difference. First operand 94 states and 131 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:30:26,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:30:26,239 INFO L93 Difference]: Finished difference Result 161 states and 224 transitions. [2021-10-16 02:30:26,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:30:26,240 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-16 02:30:26,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:30:26,241 INFO L225 Difference]: With dead ends: 161 [2021-10-16 02:30:26,241 INFO L226 Difference]: Without dead ends: 87 [2021-10-16 02:30:26,242 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:30:26,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-10-16 02:30:26,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2021-10-16 02:30:26,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.3255813953488371) internal successors, (114), 86 states have internal predecessors, (114), 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) [2021-10-16 02:30:26,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 114 transitions. [2021-10-16 02:30:26,249 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 114 transitions. Word has length 26 [2021-10-16 02:30:26,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:30:26,250 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 114 transitions. [2021-10-16 02:30:26,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:30:26,250 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 114 transitions. [2021-10-16 02:30:26,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-16 02:30:26,251 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:30:26,252 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:30:26,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-16 02:30:26,252 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:30:26,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:30:26,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1545848131, now seen corresponding path program 1 times [2021-10-16 02:30:26,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:30:26,253 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549103068] [2021-10-16 02:30:26,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:30:26,254 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:30:26,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:30:26,283 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-16 02:30:26,283 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:30:26,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549103068] [2021-10-16 02:30:26,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549103068] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:30:26,284 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:30:26,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:30:26,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463023585] [2021-10-16 02:30:26,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:30:26,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:30:26,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:30:26,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:30:26,287 INFO L87 Difference]: Start difference. First operand 87 states and 114 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:30:26,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:30:26,327 INFO L93 Difference]: Finished difference Result 132 states and 175 transitions. [2021-10-16 02:30:26,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:30:26,328 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-16 02:30:26,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:30:26,329 INFO L225 Difference]: With dead ends: 132 [2021-10-16 02:30:26,329 INFO L226 Difference]: Without dead ends: 65 [2021-10-16 02:30:26,330 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:30:26,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-10-16 02:30:26,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2021-10-16 02:30:26,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.296875) internal successors, (83), 64 states have internal predecessors, (83), 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) [2021-10-16 02:30:26,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 83 transitions. [2021-10-16 02:30:26,343 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 83 transitions. Word has length 26 [2021-10-16 02:30:26,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:30:26,345 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 83 transitions. [2021-10-16 02:30:26,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:30:26,345 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 83 transitions. [2021-10-16 02:30:26,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-16 02:30:26,349 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:30:26,349 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:30:26,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-16 02:30:26,349 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:30:26,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:30:26,350 INFO L82 PathProgramCache]: Analyzing trace with hash -429138385, now seen corresponding path program 1 times [2021-10-16 02:30:26,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:30:26,351 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570266381] [2021-10-16 02:30:26,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:30:26,352 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:30:26,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:30:26,404 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-16 02:30:26,404 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:30:26,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570266381] [2021-10-16 02:30:26,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570266381] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:30:26,405 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:30:26,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:30:26,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436222905] [2021-10-16 02:30:26,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:30:26,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:30:26,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:30:26,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:30:26,411 INFO L87 Difference]: Start difference. First operand 65 states and 83 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2021-10-16 02:30:26,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:30:26,440 INFO L93 Difference]: Finished difference Result 106 states and 138 transitions. [2021-10-16 02:30:26,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:30:26,446 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 28 [2021-10-16 02:30:26,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:30:26,446 INFO L225 Difference]: With dead ends: 106 [2021-10-16 02:30:26,447 INFO L226 Difference]: Without dead ends: 0 [2021-10-16 02:30:26,451 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:30:26,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-16 02:30:26,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-16 02:30:26,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-10-16 02:30:26,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-16 02:30:26,452 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2021-10-16 02:30:26,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:30:26,453 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-16 02:30:26,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2021-10-16 02:30:26,453 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-16 02:30:26,453 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-16 02:30:26,457 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:30:26,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-16 02:30:26,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-16 02:30:26,465 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:30:26,478 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:30:26,486 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:30:26,487 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:30:26,549 INFO L857 garLoopResultBuilder]: For program point L250(lines 250 265) no Hoare annotation was computed. [2021-10-16 02:30:26,549 INFO L857 garLoopResultBuilder]: For program point L118(lines 118 133) no Hoare annotation was computed. [2021-10-16 02:30:26,549 INFO L857 garLoopResultBuilder]: For program point L52(lines 52 63) no Hoare annotation was computed. [2021-10-16 02:30:26,549 INFO L857 garLoopResultBuilder]: For program point L366(lines 366 381) no Hoare annotation was computed. [2021-10-16 02:30:26,549 INFO L857 garLoopResultBuilder]: For program point L234(lines 234 249) no Hoare annotation was computed. [2021-10-16 02:30:26,550 INFO L857 garLoopResultBuilder]: For program point L168(lines 168 179) no Hoare annotation was computed. [2021-10-16 02:30:26,550 INFO L857 garLoopResultBuilder]: For program point L102(lines 102 117) no Hoare annotation was computed. [2021-10-16 02:30:26,550 INFO L857 garLoopResultBuilder]: For program point L36(lines 36 38) no Hoare annotation was computed. [2021-10-16 02:30:26,551 INFO L853 garLoopResultBuilder]: At program point L383(lines 24 387) the Hoare annotation is: (or (and (= 2 ULTIMATE.start_main_~this_state~0) (= ULTIMATE.start_main_~q~0 3)) (and (= 3 ULTIMATE.start_main_~this_state~0) (<= 4 ULTIMATE.start_main_~q~0)) (= ULTIMATE.start_main_~q~0 0) (and (= ULTIMATE.start_main_~q~0 2) (= ULTIMATE.start_main_~this_state~0 0))) [2021-10-16 02:30:26,552 INFO L857 garLoopResultBuilder]: For program point L350(lines 350 365) no Hoare annotation was computed. [2021-10-16 02:30:26,552 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-16 02:30:26,552 INFO L857 garLoopResultBuilder]: For program point L218(lines 218 233) no Hoare annotation was computed. [2021-10-16 02:30:26,553 INFO L857 garLoopResultBuilder]: For program point L185(lines 185 284) no Hoare annotation was computed. [2021-10-16 02:30:26,553 INFO L857 garLoopResultBuilder]: For program point L152(lines 152 163) no Hoare annotation was computed. [2021-10-16 02:30:26,553 INFO L857 garLoopResultBuilder]: For program point L334(lines 334 349) no Hoare annotation was computed. [2021-10-16 02:30:26,553 INFO L857 garLoopResultBuilder]: For program point L268(lines 268 279) no Hoare annotation was computed. [2021-10-16 02:30:26,553 INFO L857 garLoopResultBuilder]: For program point L202(lines 202 217) no Hoare annotation was computed. [2021-10-16 02:30:26,553 INFO L857 garLoopResultBuilder]: For program point L136(lines 136 147) no Hoare annotation was computed. [2021-10-16 02:30:26,554 INFO L857 garLoopResultBuilder]: For program point L318(lines 318 333) no Hoare annotation was computed. [2021-10-16 02:30:26,554 INFO L857 garLoopResultBuilder]: For program point L285(lines 285 384) no Hoare annotation was computed. [2021-10-16 02:30:26,556 INFO L857 garLoopResultBuilder]: For program point L252(lines 252 263) no Hoare annotation was computed. [2021-10-16 02:30:26,556 INFO L857 garLoopResultBuilder]: For program point L186(lines 186 201) no Hoare annotation was computed. [2021-10-16 02:30:26,556 INFO L857 garLoopResultBuilder]: For program point L120(lines 120 131) no Hoare annotation was computed. [2021-10-16 02:30:26,556 INFO L857 garLoopResultBuilder]: For program point L368(lines 368 379) no Hoare annotation was computed. [2021-10-16 02:30:26,556 INFO L857 garLoopResultBuilder]: For program point L302(lines 302 317) no Hoare annotation was computed. [2021-10-16 02:30:26,556 INFO L857 garLoopResultBuilder]: For program point L236(lines 236 247) no Hoare annotation was computed. [2021-10-16 02:30:26,557 INFO L857 garLoopResultBuilder]: For program point L104(lines 104 115) no Hoare annotation was computed. [2021-10-16 02:30:26,557 INFO L857 garLoopResultBuilder]: For program point L352(lines 352 363) no Hoare annotation was computed. [2021-10-16 02:30:26,557 INFO L857 garLoopResultBuilder]: For program point L286(lines 286 301) no Hoare annotation was computed. [2021-10-16 02:30:26,557 INFO L857 garLoopResultBuilder]: For program point L220(lines 220 231) no Hoare annotation was computed. [2021-10-16 02:30:26,557 INFO L857 garLoopResultBuilder]: For program point L88(lines 88 90) no Hoare annotation was computed. [2021-10-16 02:30:26,557 INFO L857 garLoopResultBuilder]: For program point L336(lines 336 347) no Hoare annotation was computed. [2021-10-16 02:30:26,557 INFO L857 garLoopResultBuilder]: For program point L204(lines 204 215) no Hoare annotation was computed. [2021-10-16 02:30:26,557 INFO L857 garLoopResultBuilder]: For program point L72(lines 72 74) no Hoare annotation was computed. [2021-10-16 02:30:26,558 INFO L857 garLoopResultBuilder]: For program point L320(lines 320 331) no Hoare annotation was computed. [2021-10-16 02:30:26,558 INFO L857 garLoopResultBuilder]: For program point L188(lines 188 199) no Hoare annotation was computed. [2021-10-16 02:30:26,558 INFO L857 garLoopResultBuilder]: For program point L56(lines 56 58) no Hoare annotation was computed. [2021-10-16 02:30:26,558 INFO L857 garLoopResultBuilder]: For program point L304(lines 304 315) no Hoare annotation was computed. [2021-10-16 02:30:26,558 INFO L857 garLoopResultBuilder]: For program point L172(lines 172 174) no Hoare annotation was computed. [2021-10-16 02:30:26,559 INFO L857 garLoopResultBuilder]: For program point L288(lines 288 299) no Hoare annotation was computed. [2021-10-16 02:30:26,559 INFO L857 garLoopResultBuilder]: For program point L156(lines 156 158) no Hoare annotation was computed. [2021-10-16 02:30:26,559 INFO L853 garLoopResultBuilder]: At program point L24-2(lines 24 387) the Hoare annotation is: (or (and (= 3 ULTIMATE.start_main_~this_state~0) (<= 4 ULTIMATE.start_main_~q~0)) (and (not (= 2 ULTIMATE.start_main_~this_state~0)) (= ULTIMATE.start_main_~q~0 0))) [2021-10-16 02:30:26,559 INFO L857 garLoopResultBuilder]: For program point L24-3(lines 24 387) no Hoare annotation was computed. [2021-10-16 02:30:26,559 INFO L857 garLoopResultBuilder]: For program point L272(lines 272 274) no Hoare annotation was computed. [2021-10-16 02:30:26,559 INFO L857 garLoopResultBuilder]: For program point L140(lines 140 142) no Hoare annotation was computed. [2021-10-16 02:30:26,560 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-16 02:30:26,560 INFO L857 garLoopResultBuilder]: For program point L256(lines 256 258) no Hoare annotation was computed. [2021-10-16 02:30:26,560 INFO L857 garLoopResultBuilder]: For program point L124(lines 124 126) no Hoare annotation was computed. [2021-10-16 02:30:26,560 INFO L857 garLoopResultBuilder]: For program point L372(lines 372 374) no Hoare annotation was computed. [2021-10-16 02:30:26,560 INFO L857 garLoopResultBuilder]: For program point L240(lines 240 242) no Hoare annotation was computed. [2021-10-16 02:30:26,561 INFO L857 garLoopResultBuilder]: For program point L108(lines 108 110) no Hoare annotation was computed. [2021-10-16 02:30:26,561 INFO L857 garLoopResultBuilder]: For program point L356(lines 356 358) no Hoare annotation was computed. [2021-10-16 02:30:26,561 INFO L857 garLoopResultBuilder]: For program point L224(lines 224 226) no Hoare annotation was computed. [2021-10-16 02:30:26,561 INFO L853 garLoopResultBuilder]: At program point L373(lines 15 392) the Hoare annotation is: false [2021-10-16 02:30:26,561 INFO L857 garLoopResultBuilder]: For program point L340(lines 340 342) no Hoare annotation was computed. [2021-10-16 02:30:26,561 INFO L857 garLoopResultBuilder]: For program point L208(lines 208 210) no Hoare annotation was computed. [2021-10-16 02:30:26,562 INFO L857 garLoopResultBuilder]: For program point L324(lines 324 326) no Hoare annotation was computed. [2021-10-16 02:30:26,562 INFO L857 garLoopResultBuilder]: For program point L192(lines 192 194) no Hoare annotation was computed. [2021-10-16 02:30:26,562 INFO L857 garLoopResultBuilder]: For program point L308(lines 308 310) no Hoare annotation was computed. [2021-10-16 02:30:26,562 INFO L857 garLoopResultBuilder]: For program point L292(lines 292 294) no Hoare annotation was computed. [2021-10-16 02:30:26,562 INFO L857 garLoopResultBuilder]: For program point L29(lines 29 48) no Hoare annotation was computed. [2021-10-16 02:30:26,564 INFO L857 garLoopResultBuilder]: For program point L30(lines 30 45) no Hoare annotation was computed. [2021-10-16 02:30:26,564 INFO L860 garLoopResultBuilder]: At program point L15(lines 15 392) the Hoare annotation is: true [2021-10-16 02:30:26,564 INFO L857 garLoopResultBuilder]: For program point L32(lines 32 43) no Hoare annotation was computed. [2021-10-16 02:30:26,564 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 391) no Hoare annotation was computed. [2021-10-16 02:30:26,564 INFO L857 garLoopResultBuilder]: For program point L82(lines 82 97) no Hoare annotation was computed. [2021-10-16 02:30:26,564 INFO L857 garLoopResultBuilder]: For program point L49(lines 49 100) no Hoare annotation was computed. [2021-10-16 02:30:26,564 INFO L857 garLoopResultBuilder]: For program point L66(lines 66 81) no Hoare annotation was computed. [2021-10-16 02:30:26,565 INFO L857 garLoopResultBuilder]: For program point L50(lines 50 65) no Hoare annotation was computed. [2021-10-16 02:30:26,565 INFO L857 garLoopResultBuilder]: For program point L166(lines 166 181) no Hoare annotation was computed. [2021-10-16 02:30:26,565 INFO L857 garLoopResultBuilder]: For program point L150(lines 150 165) no Hoare annotation was computed. [2021-10-16 02:30:26,565 INFO L857 garLoopResultBuilder]: For program point L84(lines 84 95) no Hoare annotation was computed. [2021-10-16 02:30:26,565 INFO L857 garLoopResultBuilder]: For program point L266(lines 266 281) no Hoare annotation was computed. [2021-10-16 02:30:26,565 INFO L857 garLoopResultBuilder]: For program point L134(lines 134 149) no Hoare annotation was computed. [2021-10-16 02:30:26,565 INFO L857 garLoopResultBuilder]: For program point L101(lines 101 184) no Hoare annotation was computed. [2021-10-16 02:30:26,565 INFO L857 garLoopResultBuilder]: For program point L68(lines 68 79) no Hoare annotation was computed. [2021-10-16 02:30:26,571 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:30:26,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:30:26 BoogieIcfgContainer [2021-10-16 02:30:26,585 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:30:26,586 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:30:26,586 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:30:26,586 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:30:26,587 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:30:24" (3/4) ... [2021-10-16 02:30:26,589 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-16 02:30:26,600 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-16 02:30:26,600 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-16 02:30:26,600 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 02:30:26,600 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 02:30:26,622 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b152b34a-71ca-4c5a-acd9-2e2cde73da2e/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 02:30:26,622 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:30:26,624 INFO L168 Benchmark]: Toolchain (without parser) took 2842.75 ms. Allocated memory was 113.2 MB in the beginning and 146.8 MB in the end (delta: 33.6 MB). Free memory was 72.2 MB in the beginning and 54.3 MB in the end (delta: 17.9 MB). Peak memory consumption was 51.8 MB. Max. memory is 16.1 GB. [2021-10-16 02:30:26,624 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 113.2 MB. Free memory is still 88.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:30:26,625 INFO L168 Benchmark]: CACSL2BoogieTranslator took 338.10 ms. Allocated memory is still 113.2 MB. Free memory was 72.0 MB in the beginning and 85.5 MB in the end (delta: -13.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:30:26,625 INFO L168 Benchmark]: Boogie Procedure Inliner took 77.71 ms. Allocated memory is still 113.2 MB. Free memory was 85.5 MB in the beginning and 83.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:30:26,626 INFO L168 Benchmark]: Boogie Preprocessor took 39.30 ms. Allocated memory is still 113.2 MB. Free memory was 83.4 MB in the beginning and 81.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:30:26,626 INFO L168 Benchmark]: RCFGBuilder took 479.22 ms. Allocated memory is still 113.2 MB. Free memory was 81.8 MB in the beginning and 65.0 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-16 02:30:26,627 INFO L168 Benchmark]: TraceAbstraction took 1865.21 ms. Allocated memory was 113.2 MB in the beginning and 146.8 MB in the end (delta: 33.6 MB). Free memory was 64.6 MB in the beginning and 56.4 MB in the end (delta: 8.2 MB). Peak memory consumption was 43.7 MB. Max. memory is 16.1 GB. [2021-10-16 02:30:26,627 INFO L168 Benchmark]: Witness Printer took 36.76 ms. Allocated memory is still 146.8 MB. Free memory was 56.4 MB in the beginning and 54.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:30:26,630 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 113.2 MB. Free memory is still 88.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 338.10 ms. Allocated memory is still 113.2 MB. Free memory was 72.0 MB in the beginning and 85.5 MB in the end (delta: -13.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 77.71 ms. Allocated memory is still 113.2 MB. Free memory was 85.5 MB in the beginning and 83.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.30 ms. Allocated memory is still 113.2 MB. Free memory was 83.4 MB in the beginning and 81.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 479.22 ms. Allocated memory is still 113.2 MB. Free memory was 81.8 MB in the beginning and 65.0 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1865.21 ms. Allocated memory was 113.2 MB in the beginning and 146.8 MB in the end (delta: 33.6 MB). Free memory was 64.6 MB in the beginning and 56.4 MB in the end (delta: 8.2 MB). Peak memory consumption was 43.7 MB. Max. memory is 16.1 GB. * Witness Printer took 36.76 ms. Allocated memory is still 146.8 MB. Free memory was 56.4 MB in the beginning and 54.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 391]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1790.2ms, OverallIterations: 9, TraceHistogramMax: 3, EmptinessCheckTime: 24.7ms, AutomataDifference: 676.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 89.7ms, InitialAbstractionConstructionTime: 14.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 870 SDtfs, 282 SDslu, 449 SDs, 0 SdLazy, 244 SolverSat, 74 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 292.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=128occurred in iteration=4, InterpolantAutomatonStates: 27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 122.9ms AutomataMinimizationTime, 9 MinimizatonAttempts, 47 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 11 NumberOfFragments, 43 HoareAnnotationTreeSize, 4 FomulaSimplifications, 8 FormulaSimplificationTreeSizeReduction, 23.7ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 17 FormulaSimplificationTreeSizeReductionInter, 57.4ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 37.6ms SsaConstructionTime, 158.0ms SatisfiabilityAnalysisTime, 336.4ms InterpolantComputationTime, 174 NumberOfCodeBlocks, 174 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 165 ConstructedInterpolants, 0 QuantifiedInterpolants, 280 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 43/43 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: (((2 == this_state && q == 3) || (3 == this_state && 4 <= q)) || q == 0) || (q == 2 && this_state == 0) - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: (3 == this_state && 4 <= q) || (!(2 == this_state) && q == 0) - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 0 RESULT: Ultimate proved your program to be correct! [2021-10-16 02:30:26,671 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b152b34a-71ca-4c5a-acd9-2e2cde73da2e/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...