./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 e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7780875b-dc90-4139-97ee-57b7a6486430/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7780875b-dc90-4139-97ee-57b7a6486430/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7780875b-dc90-4139-97ee-57b7a6486430/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7780875b-dc90-4139-97ee-57b7a6486430/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/psyco/psyco_security.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7780875b-dc90-4139-97ee-57b7a6486430/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7780875b-dc90-4139-97ee-57b7a6486430/bin/utaipan-9zjyvhn0QE --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 c03d27deb00d6c25e1f99c43455f6da27475e88a721be2a7236bfffedf5da1e8 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 09:49:36,551 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 09:49:36,554 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 09:49:36,606 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 09:49:36,607 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 09:49:36,611 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 09:49:36,613 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 09:49:36,617 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 09:49:36,620 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 09:49:36,625 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 09:49:36,626 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 09:49:36,628 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 09:49:36,629 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 09:49:36,632 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 09:49:36,634 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 09:49:36,642 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 09:49:36,644 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 09:49:36,645 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 09:49:36,647 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 09:49:36,655 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 09:49:36,657 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 09:49:36,658 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 09:49:36,662 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 09:49:36,663 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 09:49:36,672 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 09:49:36,672 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 09:49:36,673 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 09:49:36,675 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 09:49:36,676 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 09:49:36,677 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 09:49:36,678 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 09:49:36,679 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 09:49:36,681 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 09:49:36,682 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 09:49:36,684 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 09:49:36,685 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 09:49:36,685 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 09:49:36,686 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 09:49:36,686 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 09:49:36,687 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 09:49:36,688 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 09:49:36,689 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7780875b-dc90-4139-97ee-57b7a6486430/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 09:49:36,733 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 09:49:36,733 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 09:49:36,735 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 09:49:36,736 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 09:49:36,736 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 09:49:36,736 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 09:49:36,736 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 09:49:36,736 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 09:49:36,743 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 09:49:36,743 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 09:49:36,744 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 09:49:36,745 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 09:49:36,745 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 09:49:36,745 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 09:49:36,745 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 09:49:36,746 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 09:49:36,746 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 09:49:36,746 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 09:49:36,747 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 09:49:36,747 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 09:49:36,747 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 09:49:36,747 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 09:49:36,748 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 09:49:36,748 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 09:49:36,748 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 09:49:36,748 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 09:49:36,748 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 09:49:36,749 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 09:49:36,749 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 09:49:36,751 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 09:49:36,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:49:36,751 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 09:49:36,751 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 09:49:36,752 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 09:49:36,752 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 09:49:36,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 09:49:36,752 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 09:49:36,753 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 09:49:36,753 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 09:49:36,753 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_7780875b-dc90-4139-97ee-57b7a6486430/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7780875b-dc90-4139-97ee-57b7a6486430/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c03d27deb00d6c25e1f99c43455f6da27475e88a721be2a7236bfffedf5da1e8 [2021-10-24 09:49:37,046 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 09:49:37,069 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 09:49:37,071 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 09:49:37,073 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 09:49:37,073 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 09:49:37,074 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7780875b-dc90-4139-97ee-57b7a6486430/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/psyco/psyco_security.c [2021-10-24 09:49:37,143 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7780875b-dc90-4139-97ee-57b7a6486430/bin/utaipan-9zjyvhn0QE/data/7963d9307/55a8d479dbb64fd1a49b24eb7d372522/FLAGd8db304bb [2021-10-24 09:49:37,552 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 09:49:37,553 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7780875b-dc90-4139-97ee-57b7a6486430/sv-benchmarks/c/psyco/psyco_security.c [2021-10-24 09:49:37,563 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7780875b-dc90-4139-97ee-57b7a6486430/bin/utaipan-9zjyvhn0QE/data/7963d9307/55a8d479dbb64fd1a49b24eb7d372522/FLAGd8db304bb [2021-10-24 09:49:37,940 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7780875b-dc90-4139-97ee-57b7a6486430/bin/utaipan-9zjyvhn0QE/data/7963d9307/55a8d479dbb64fd1a49b24eb7d372522 [2021-10-24 09:49:37,943 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 09:49:37,944 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 09:49:37,946 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 09:49:37,946 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 09:49:37,950 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 09:49:37,951 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:49:37" (1/1) ... [2021-10-24 09:49:37,952 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@616275f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:37, skipping insertion in model container [2021-10-24 09:49:37,952 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:49:37" (1/1) ... [2021-10-24 09:49:37,959 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 09:49:37,988 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 09:49:38,191 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_7780875b-dc90-4139-97ee-57b7a6486430/sv-benchmarks/c/psyco/psyco_security.c[12744,12757] [2021-10-24 09:49:38,195 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:49:38,204 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 09:49:38,236 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_7780875b-dc90-4139-97ee-57b7a6486430/sv-benchmarks/c/psyco/psyco_security.c[12744,12757] [2021-10-24 09:49:38,238 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:49:38,251 INFO L208 MainTranslator]: Completed translation [2021-10-24 09:49:38,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:38 WrapperNode [2021-10-24 09:49:38,252 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 09:49:38,253 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 09:49:38,253 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 09:49:38,253 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 09:49:38,273 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:38" (1/1) ... [2021-10-24 09:49:38,285 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:38" (1/1) ... [2021-10-24 09:49:38,323 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 09:49:38,324 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 09:49:38,324 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 09:49:38,325 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 09:49:38,333 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:38" (1/1) ... [2021-10-24 09:49:38,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:38" (1/1) ... [2021-10-24 09:49:38,337 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:38" (1/1) ... [2021-10-24 09:49:38,337 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:38" (1/1) ... [2021-10-24 09:49:38,343 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:38" (1/1) ... [2021-10-24 09:49:38,351 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:38" (1/1) ... [2021-10-24 09:49:38,353 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:38" (1/1) ... [2021-10-24 09:49:38,356 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 09:49:38,357 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 09:49:38,358 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 09:49:38,358 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 09:49:38,359 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:38" (1/1) ... [2021-10-24 09:49:38,370 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:49:38,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7780875b-dc90-4139-97ee-57b7a6486430/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:49:38,406 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7780875b-dc90-4139-97ee-57b7a6486430/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 09:49:38,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7780875b-dc90-4139-97ee-57b7a6486430/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 09:49:38,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 09:49:38,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 09:49:38,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 09:49:38,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 09:49:38,848 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 09:49:38,848 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2021-10-24 09:49:38,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:49:38 BoogieIcfgContainer [2021-10-24 09:49:38,851 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 09:49:38,853 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 09:49:38,853 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 09:49:38,856 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 09:49:38,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:49:37" (1/3) ... [2021-10-24 09:49:38,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@205a7e63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:49:38, skipping insertion in model container [2021-10-24 09:49:38,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:38" (2/3) ... [2021-10-24 09:49:38,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@205a7e63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:49:38, skipping insertion in model container [2021-10-24 09:49:38,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:49:38" (3/3) ... [2021-10-24 09:49:38,860 INFO L111 eAbstractionObserver]: Analyzing ICFG psyco_security.c [2021-10-24 09:49:38,865 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 09:49:38,866 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-24 09:49:38,914 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 09:49:38,920 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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 [2021-10-24 09:49:38,920 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-24 09:49:38,953 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) [2021-10-24 09:49:38,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-24 09:49:38,964 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:49:38,965 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:49:38,966 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:49:38,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:49:38,977 INFO L82 PathProgramCache]: Analyzing trace with hash 269823665, now seen corresponding path program 1 times [2021-10-24 09:49:38,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:49:38,987 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898456055] [2021-10-24 09:49:38,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:49:38,988 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:49:39,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:49:39,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:49:39,145 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:49:39,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898456055] [2021-10-24 09:49:39,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898456055] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:49:39,147 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:49:39,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 09:49:39,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359012117] [2021-10-24 09:49:39,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-24 09:49:39,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:49:39,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-24 09:49:39,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 09:49:39,169 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) [2021-10-24 09:49:39,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:49:39,193 INFO L93 Difference]: Finished difference Result 151 states and 289 transitions. [2021-10-24 09:49:39,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-24 09:49:39,195 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 [2021-10-24 09:49:39,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:49:39,205 INFO L225 Difference]: With dead ends: 151 [2021-10-24 09:49:39,205 INFO L226 Difference]: Without dead ends: 73 [2021-10-24 09:49:39,208 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 [2021-10-24 09:49:39,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-10-24 09:49:39,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-10-24 09:49:39,241 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) [2021-10-24 09:49:39,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 108 transitions. [2021-10-24 09:49:39,244 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 108 transitions. Word has length 8 [2021-10-24 09:49:39,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:49:39,245 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 108 transitions. [2021-10-24 09:49:39,245 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) [2021-10-24 09:49:39,245 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 108 transitions. [2021-10-24 09:49:39,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-24 09:49:39,246 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:49:39,247 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:49:39,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-24 09:49:39,247 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:49:39,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:49:39,248 INFO L82 PathProgramCache]: Analyzing trace with hash 307090919, now seen corresponding path program 1 times [2021-10-24 09:49:39,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:49:39,249 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058645577] [2021-10-24 09:49:39,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:49:39,249 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:49:39,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:49:39,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:49:39,291 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:49:39,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058645577] [2021-10-24 09:49:39,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058645577] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:49:39,291 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:49:39,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 09:49:39,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464590600] [2021-10-24 09:49:39,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 09:49:39,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:49:39,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 09:49:39,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:49:39,295 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) [2021-10-24 09:49:39,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:49:39,348 INFO L93 Difference]: Finished difference Result 148 states and 219 transitions. [2021-10-24 09:49:39,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 09:49:39,348 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 [2021-10-24 09:49:39,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:49:39,350 INFO L225 Difference]: With dead ends: 148 [2021-10-24 09:49:39,350 INFO L226 Difference]: Without dead ends: 76 [2021-10-24 09:49:39,351 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:49:39,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-10-24 09:49:39,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2021-10-24 09:49:39,368 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) [2021-10-24 09:49:39,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 111 transitions. [2021-10-24 09:49:39,374 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 111 transitions. Word has length 9 [2021-10-24 09:49:39,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:49:39,374 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 111 transitions. [2021-10-24 09:49:39,399 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) [2021-10-24 09:49:39,399 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 111 transitions. [2021-10-24 09:49:39,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-24 09:49:39,400 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:49:39,400 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:49:39,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-24 09:49:39,401 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:49:39,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:49:39,401 INFO L82 PathProgramCache]: Analyzing trace with hash -1213654828, now seen corresponding path program 1 times [2021-10-24 09:49:39,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:49:39,411 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52902296] [2021-10-24 09:49:39,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:49:39,412 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:49:39,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:49:39,534 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:49:39,535 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:49:39,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52902296] [2021-10-24 09:49:39,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52902296] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:49:39,536 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:49:39,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 09:49:39,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408065840] [2021-10-24 09:49:39,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 09:49:39,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:49:39,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 09:49:39,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:49:39,544 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) [2021-10-24 09:49:39,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:49:39,618 INFO L93 Difference]: Finished difference Result 156 states and 228 transitions. [2021-10-24 09:49:39,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 09:49:39,619 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 [2021-10-24 09:49:39,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:49:39,623 INFO L225 Difference]: With dead ends: 156 [2021-10-24 09:49:39,623 INFO L226 Difference]: Without dead ends: 82 [2021-10-24 09:49:39,624 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:49:39,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-10-24 09:49:39,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 80. [2021-10-24 09:49:39,634 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) [2021-10-24 09:49:39,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 115 transitions. [2021-10-24 09:49:39,636 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 115 transitions. Word has length 14 [2021-10-24 09:49:39,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:49:39,637 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 115 transitions. [2021-10-24 09:49:39,637 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) [2021-10-24 09:49:39,637 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 115 transitions. [2021-10-24 09:49:39,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-24 09:49:39,638 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:49:39,638 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:49:39,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-24 09:49:39,639 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:49:39,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:49:39,640 INFO L82 PathProgramCache]: Analyzing trace with hash -107735230, now seen corresponding path program 1 times [2021-10-24 09:49:39,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:49:39,640 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664769457] [2021-10-24 09:49:39,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:49:39,641 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:49:39,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:49:39,731 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:49:39,731 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:49:39,731 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664769457] [2021-10-24 09:49:39,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664769457] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:49:39,738 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:49:39,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-24 09:49:39,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137151012] [2021-10-24 09:49:39,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 09:49:39,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:49:39,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 09:49:39,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 09:49:39,742 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) [2021-10-24 09:49:39,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:49:39,910 INFO L93 Difference]: Finished difference Result 253 states and 361 transitions. [2021-10-24 09:49:39,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 09:49:39,913 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 [2021-10-24 09:49:39,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:49:39,915 INFO L225 Difference]: With dead ends: 253 [2021-10-24 09:49:39,915 INFO L226 Difference]: Without dead ends: 163 [2021-10-24 09:49:39,916 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 09:49:39,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-10-24 09:49:39,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 128. [2021-10-24 09:49:39,928 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) [2021-10-24 09:49:39,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 193 transitions. [2021-10-24 09:49:39,930 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 193 transitions. Word has length 17 [2021-10-24 09:49:39,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:49:39,930 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 193 transitions. [2021-10-24 09:49:39,931 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) [2021-10-24 09:49:39,931 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 193 transitions. [2021-10-24 09:49:39,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-24 09:49:39,932 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:49:39,932 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:49:39,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-24 09:49:39,933 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:49:39,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:49:39,933 INFO L82 PathProgramCache]: Analyzing trace with hash 1275599573, now seen corresponding path program 1 times [2021-10-24 09:49:39,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:49:39,934 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491089750] [2021-10-24 09:49:39,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:49:39,934 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:49:39,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:49:39,971 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-24 09:49:39,971 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:49:39,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491089750] [2021-10-24 09:49:39,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491089750] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:49:39,971 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:49:39,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 09:49:39,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772901247] [2021-10-24 09:49:39,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 09:49:39,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:49:39,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 09:49:39,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:49:39,974 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) [2021-10-24 09:49:40,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:49:40,013 INFO L93 Difference]: Finished difference Result 218 states and 334 transitions. [2021-10-24 09:49:40,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 09:49:40,014 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 [2021-10-24 09:49:40,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:49:40,015 INFO L225 Difference]: With dead ends: 218 [2021-10-24 09:49:40,015 INFO L226 Difference]: Without dead ends: 92 [2021-10-24 09:49:40,016 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 [2021-10-24 09:49:40,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-10-24 09:49:40,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2021-10-24 09:49:40,023 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) [2021-10-24 09:49:40,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 137 transitions. [2021-10-24 09:49:40,025 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 137 transitions. Word has length 21 [2021-10-24 09:49:40,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:49:40,025 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 137 transitions. [2021-10-24 09:49:40,025 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) [2021-10-24 09:49:40,025 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 137 transitions. [2021-10-24 09:49:40,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-24 09:49:40,027 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:49:40,027 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] [2021-10-24 09:49:40,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-24 09:49:40,027 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:49:40,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:49:40,028 INFO L82 PathProgramCache]: Analyzing trace with hash -922672237, now seen corresponding path program 1 times [2021-10-24 09:49:40,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:49:40,028 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544270112] [2021-10-24 09:49:40,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:49:40,029 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:49:40,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:49:40,102 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-24 09:49:40,102 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:49:40,102 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544270112] [2021-10-24 09:49:40,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544270112] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:49:40,102 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:49:40,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 09:49:40,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237916743] [2021-10-24 09:49:40,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 09:49:40,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:49:40,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 09:49:40,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:49:40,104 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) [2021-10-24 09:49:40,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:49:40,163 INFO L93 Difference]: Finished difference Result 178 states and 265 transitions. [2021-10-24 09:49:40,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 09:49:40,165 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 [2021-10-24 09:49:40,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:49:40,166 INFO L225 Difference]: With dead ends: 178 [2021-10-24 09:49:40,166 INFO L226 Difference]: Without dead ends: 104 [2021-10-24 09:49:40,168 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:49:40,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-10-24 09:49:40,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 94. [2021-10-24 09:49:40,188 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) [2021-10-24 09:49:40,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 131 transitions. [2021-10-24 09:49:40,189 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 131 transitions. Word has length 25 [2021-10-24 09:49:40,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:49:40,189 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 131 transitions. [2021-10-24 09:49:40,190 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) [2021-10-24 09:49:40,190 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 131 transitions. [2021-10-24 09:49:40,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-24 09:49:40,191 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:49:40,191 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] [2021-10-24 09:49:40,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-24 09:49:40,192 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:49:40,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:49:40,192 INFO L82 PathProgramCache]: Analyzing trace with hash -1682202286, now seen corresponding path program 1 times [2021-10-24 09:49:40,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:49:40,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197572439] [2021-10-24 09:49:40,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:49:40,193 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:49:40,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:49:40,227 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-24 09:49:40,227 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:49:40,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197572439] [2021-10-24 09:49:40,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197572439] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:49:40,227 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:49:40,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 09:49:40,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249868216] [2021-10-24 09:49:40,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 09:49:40,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:49:40,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 09:49:40,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:49:40,229 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) [2021-10-24 09:49:40,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:49:40,261 INFO L93 Difference]: Finished difference Result 161 states and 224 transitions. [2021-10-24 09:49:40,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 09:49:40,262 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 [2021-10-24 09:49:40,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:49:40,263 INFO L225 Difference]: With dead ends: 161 [2021-10-24 09:49:40,263 INFO L226 Difference]: Without dead ends: 87 [2021-10-24 09:49:40,263 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 [2021-10-24 09:49:40,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-10-24 09:49:40,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2021-10-24 09:49:40,268 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) [2021-10-24 09:49:40,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 114 transitions. [2021-10-24 09:49:40,269 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 114 transitions. Word has length 26 [2021-10-24 09:49:40,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:49:40,270 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 114 transitions. [2021-10-24 09:49:40,270 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) [2021-10-24 09:49:40,270 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 114 transitions. [2021-10-24 09:49:40,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-24 09:49:40,271 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:49:40,271 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] [2021-10-24 09:49:40,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-24 09:49:40,272 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:49:40,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:49:40,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1545848131, now seen corresponding path program 1 times [2021-10-24 09:49:40,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:49:40,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935809369] [2021-10-24 09:49:40,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:49:40,273 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:49:40,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:49:40,319 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-24 09:49:40,320 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:49:40,320 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935809369] [2021-10-24 09:49:40,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935809369] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:49:40,321 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:49:40,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 09:49:40,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492331048] [2021-10-24 09:49:40,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 09:49:40,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:49:40,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 09:49:40,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:49:40,325 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) [2021-10-24 09:49:40,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:49:40,371 INFO L93 Difference]: Finished difference Result 132 states and 175 transitions. [2021-10-24 09:49:40,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 09:49:40,372 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 [2021-10-24 09:49:40,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:49:40,373 INFO L225 Difference]: With dead ends: 132 [2021-10-24 09:49:40,373 INFO L226 Difference]: Without dead ends: 65 [2021-10-24 09:49:40,374 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:49:40,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-10-24 09:49:40,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2021-10-24 09:49:40,395 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) [2021-10-24 09:49:40,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 83 transitions. [2021-10-24 09:49:40,411 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 83 transitions. Word has length 26 [2021-10-24 09:49:40,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:49:40,411 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 83 transitions. [2021-10-24 09:49:40,412 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) [2021-10-24 09:49:40,413 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 83 transitions. [2021-10-24 09:49:40,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-24 09:49:40,418 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:49:40,418 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] [2021-10-24 09:49:40,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-24 09:49:40,418 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:49:40,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:49:40,419 INFO L82 PathProgramCache]: Analyzing trace with hash -429138385, now seen corresponding path program 1 times [2021-10-24 09:49:40,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:49:40,419 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199779489] [2021-10-24 09:49:40,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:49:40,420 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:49:40,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:49:40,452 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-24 09:49:40,452 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:49:40,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199779489] [2021-10-24 09:49:40,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199779489] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:49:40,452 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:49:40,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 09:49:40,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294622934] [2021-10-24 09:49:40,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 09:49:40,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:49:40,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 09:49:40,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:49:40,454 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) [2021-10-24 09:49:40,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:49:40,478 INFO L93 Difference]: Finished difference Result 106 states and 138 transitions. [2021-10-24 09:49:40,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 09:49:40,480 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 [2021-10-24 09:49:40,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:49:40,480 INFO L225 Difference]: With dead ends: 106 [2021-10-24 09:49:40,480 INFO L226 Difference]: Without dead ends: 0 [2021-10-24 09:49:40,481 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:49:40,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-24 09:49:40,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-24 09:49:40,481 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) [2021-10-24 09:49:40,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-24 09:49:40,482 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2021-10-24 09:49:40,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:49:40,482 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-24 09:49:40,482 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) [2021-10-24 09:49:40,482 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-24 09:49:40,482 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-24 09:49:40,485 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 09:49:40,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-24 09:49:40,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-24 09:49:40,503 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:49:40,514 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:49:40,521 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:49:40,523 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:49:40,584 INFO L857 garLoopResultBuilder]: For program point L250(lines 250 265) no Hoare annotation was computed. [2021-10-24 09:49:40,584 INFO L857 garLoopResultBuilder]: For program point L118(lines 118 133) no Hoare annotation was computed. [2021-10-24 09:49:40,584 INFO L857 garLoopResultBuilder]: For program point L52(lines 52 63) no Hoare annotation was computed. [2021-10-24 09:49:40,585 INFO L857 garLoopResultBuilder]: For program point L366(lines 366 381) no Hoare annotation was computed. [2021-10-24 09:49:40,585 INFO L857 garLoopResultBuilder]: For program point L234(lines 234 249) no Hoare annotation was computed. [2021-10-24 09:49:40,585 INFO L857 garLoopResultBuilder]: For program point L168(lines 168 179) no Hoare annotation was computed. [2021-10-24 09:49:40,585 INFO L857 garLoopResultBuilder]: For program point L102(lines 102 117) no Hoare annotation was computed. [2021-10-24 09:49:40,585 INFO L857 garLoopResultBuilder]: For program point L36(lines 36 38) no Hoare annotation was computed. [2021-10-24 09:49:40,585 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))) [2021-10-24 09:49:40,586 INFO L857 garLoopResultBuilder]: For program point L350(lines 350 365) no Hoare annotation was computed. [2021-10-24 09:49:40,586 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-24 09:49:40,586 INFO L857 garLoopResultBuilder]: For program point L218(lines 218 233) no Hoare annotation was computed. [2021-10-24 09:49:40,586 INFO L857 garLoopResultBuilder]: For program point L185(lines 185 284) no Hoare annotation was computed. [2021-10-24 09:49:40,586 INFO L857 garLoopResultBuilder]: For program point L152(lines 152 163) no Hoare annotation was computed. [2021-10-24 09:49:40,586 INFO L857 garLoopResultBuilder]: For program point L334(lines 334 349) no Hoare annotation was computed. [2021-10-24 09:49:40,586 INFO L857 garLoopResultBuilder]: For program point L268(lines 268 279) no Hoare annotation was computed. [2021-10-24 09:49:40,587 INFO L857 garLoopResultBuilder]: For program point L202(lines 202 217) no Hoare annotation was computed. [2021-10-24 09:49:40,587 INFO L857 garLoopResultBuilder]: For program point L136(lines 136 147) no Hoare annotation was computed. [2021-10-24 09:49:40,587 INFO L857 garLoopResultBuilder]: For program point L318(lines 318 333) no Hoare annotation was computed. [2021-10-24 09:49:40,587 INFO L857 garLoopResultBuilder]: For program point L285(lines 285 384) no Hoare annotation was computed. [2021-10-24 09:49:40,590 INFO L857 garLoopResultBuilder]: For program point L252(lines 252 263) no Hoare annotation was computed. [2021-10-24 09:49:40,590 INFO L857 garLoopResultBuilder]: For program point L186(lines 186 201) no Hoare annotation was computed. [2021-10-24 09:49:40,590 INFO L857 garLoopResultBuilder]: For program point L120(lines 120 131) no Hoare annotation was computed. [2021-10-24 09:49:40,590 INFO L857 garLoopResultBuilder]: For program point L368(lines 368 379) no Hoare annotation was computed. [2021-10-24 09:49:40,590 INFO L857 garLoopResultBuilder]: For program point L302(lines 302 317) no Hoare annotation was computed. [2021-10-24 09:49:40,590 INFO L857 garLoopResultBuilder]: For program point L236(lines 236 247) no Hoare annotation was computed. [2021-10-24 09:49:40,591 INFO L857 garLoopResultBuilder]: For program point L104(lines 104 115) no Hoare annotation was computed. [2021-10-24 09:49:40,591 INFO L857 garLoopResultBuilder]: For program point L352(lines 352 363) no Hoare annotation was computed. [2021-10-24 09:49:40,591 INFO L857 garLoopResultBuilder]: For program point L286(lines 286 301) no Hoare annotation was computed. [2021-10-24 09:49:40,591 INFO L857 garLoopResultBuilder]: For program point L220(lines 220 231) no Hoare annotation was computed. [2021-10-24 09:49:40,591 INFO L857 garLoopResultBuilder]: For program point L88(lines 88 90) no Hoare annotation was computed. [2021-10-24 09:49:40,591 INFO L857 garLoopResultBuilder]: For program point L336(lines 336 347) no Hoare annotation was computed. [2021-10-24 09:49:40,591 INFO L857 garLoopResultBuilder]: For program point L204(lines 204 215) no Hoare annotation was computed. [2021-10-24 09:49:40,592 INFO L857 garLoopResultBuilder]: For program point L72(lines 72 74) no Hoare annotation was computed. [2021-10-24 09:49:40,592 INFO L857 garLoopResultBuilder]: For program point L320(lines 320 331) no Hoare annotation was computed. [2021-10-24 09:49:40,592 INFO L857 garLoopResultBuilder]: For program point L188(lines 188 199) no Hoare annotation was computed. [2021-10-24 09:49:40,592 INFO L857 garLoopResultBuilder]: For program point L56(lines 56 58) no Hoare annotation was computed. [2021-10-24 09:49:40,592 INFO L857 garLoopResultBuilder]: For program point L304(lines 304 315) no Hoare annotation was computed. [2021-10-24 09:49:40,593 INFO L857 garLoopResultBuilder]: For program point L172(lines 172 174) no Hoare annotation was computed. [2021-10-24 09:49:40,593 INFO L857 garLoopResultBuilder]: For program point L288(lines 288 299) no Hoare annotation was computed. [2021-10-24 09:49:40,593 INFO L857 garLoopResultBuilder]: For program point L156(lines 156 158) no Hoare annotation was computed. [2021-10-24 09:49:40,593 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))) [2021-10-24 09:49:40,595 INFO L857 garLoopResultBuilder]: For program point L24-3(lines 24 387) no Hoare annotation was computed. [2021-10-24 09:49:40,595 INFO L857 garLoopResultBuilder]: For program point L272(lines 272 274) no Hoare annotation was computed. [2021-10-24 09:49:40,596 INFO L857 garLoopResultBuilder]: For program point L140(lines 140 142) no Hoare annotation was computed. [2021-10-24 09:49:40,596 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-24 09:49:40,596 INFO L857 garLoopResultBuilder]: For program point L256(lines 256 258) no Hoare annotation was computed. [2021-10-24 09:49:40,596 INFO L857 garLoopResultBuilder]: For program point L124(lines 124 126) no Hoare annotation was computed. [2021-10-24 09:49:40,596 INFO L857 garLoopResultBuilder]: For program point L372(lines 372 374) no Hoare annotation was computed. [2021-10-24 09:49:40,597 INFO L857 garLoopResultBuilder]: For program point L240(lines 240 242) no Hoare annotation was computed. [2021-10-24 09:49:40,597 INFO L857 garLoopResultBuilder]: For program point L108(lines 108 110) no Hoare annotation was computed. [2021-10-24 09:49:40,597 INFO L857 garLoopResultBuilder]: For program point L356(lines 356 358) no Hoare annotation was computed. [2021-10-24 09:49:40,597 INFO L857 garLoopResultBuilder]: For program point L224(lines 224 226) no Hoare annotation was computed. [2021-10-24 09:49:40,598 INFO L853 garLoopResultBuilder]: At program point L373(lines 15 392) the Hoare annotation is: false [2021-10-24 09:49:40,598 INFO L857 garLoopResultBuilder]: For program point L340(lines 340 342) no Hoare annotation was computed. [2021-10-24 09:49:40,598 INFO L857 garLoopResultBuilder]: For program point L208(lines 208 210) no Hoare annotation was computed. [2021-10-24 09:49:40,599 INFO L857 garLoopResultBuilder]: For program point L324(lines 324 326) no Hoare annotation was computed. [2021-10-24 09:49:40,599 INFO L857 garLoopResultBuilder]: For program point L192(lines 192 194) no Hoare annotation was computed. [2021-10-24 09:49:40,599 INFO L857 garLoopResultBuilder]: For program point L308(lines 308 310) no Hoare annotation was computed. [2021-10-24 09:49:40,599 INFO L857 garLoopResultBuilder]: For program point L292(lines 292 294) no Hoare annotation was computed. [2021-10-24 09:49:40,599 INFO L857 garLoopResultBuilder]: For program point L29(lines 29 48) no Hoare annotation was computed. [2021-10-24 09:49:40,601 INFO L857 garLoopResultBuilder]: For program point L30(lines 30 45) no Hoare annotation was computed. [2021-10-24 09:49:40,601 INFO L860 garLoopResultBuilder]: At program point L15(lines 15 392) the Hoare annotation is: true [2021-10-24 09:49:40,601 INFO L857 garLoopResultBuilder]: For program point L32(lines 32 43) no Hoare annotation was computed. [2021-10-24 09:49:40,601 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 391) no Hoare annotation was computed. [2021-10-24 09:49:40,601 INFO L857 garLoopResultBuilder]: For program point L82(lines 82 97) no Hoare annotation was computed. [2021-10-24 09:49:40,602 INFO L857 garLoopResultBuilder]: For program point L49(lines 49 100) no Hoare annotation was computed. [2021-10-24 09:49:40,602 INFO L857 garLoopResultBuilder]: For program point L66(lines 66 81) no Hoare annotation was computed. [2021-10-24 09:49:40,602 INFO L857 garLoopResultBuilder]: For program point L50(lines 50 65) no Hoare annotation was computed. [2021-10-24 09:49:40,602 INFO L857 garLoopResultBuilder]: For program point L166(lines 166 181) no Hoare annotation was computed. [2021-10-24 09:49:40,602 INFO L857 garLoopResultBuilder]: For program point L150(lines 150 165) no Hoare annotation was computed. [2021-10-24 09:49:40,602 INFO L857 garLoopResultBuilder]: For program point L84(lines 84 95) no Hoare annotation was computed. [2021-10-24 09:49:40,602 INFO L857 garLoopResultBuilder]: For program point L266(lines 266 281) no Hoare annotation was computed. [2021-10-24 09:49:40,603 INFO L857 garLoopResultBuilder]: For program point L134(lines 134 149) no Hoare annotation was computed. [2021-10-24 09:49:40,603 INFO L857 garLoopResultBuilder]: For program point L101(lines 101 184) no Hoare annotation was computed. [2021-10-24 09:49:40,603 INFO L857 garLoopResultBuilder]: For program point L68(lines 68 79) no Hoare annotation was computed. [2021-10-24 09:49:40,607 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 09:49:40,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:49:40 BoogieIcfgContainer [2021-10-24 09:49:40,628 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 09:49:40,629 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 09:49:40,629 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 09:49:40,629 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 09:49:40,630 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:49:38" (3/4) ... [2021-10-24 09:49:40,632 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-24 09:49:40,656 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-24 09:49:40,656 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-24 09:49:40,657 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-24 09:49:40,657 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-24 09:49:40,698 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7780875b-dc90-4139-97ee-57b7a6486430/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 09:49:40,698 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 09:49:40,699 INFO L168 Benchmark]: Toolchain (without parser) took 2754.31 ms. Allocated memory is still 119.5 MB. Free memory was 82.4 MB in the beginning and 79.4 MB in the end (delta: 2.9 MB). Peak memory consumption was 945.2 kB. Max. memory is 16.1 GB. [2021-10-24 09:49:40,700 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 119.5 MB. Free memory is still 99.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:49:40,701 INFO L168 Benchmark]: CACSL2BoogieTranslator took 306.05 ms. Allocated memory is still 119.5 MB. Free memory was 82.2 MB in the beginning and 94.7 MB in the end (delta: -12.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-24 09:49:40,701 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.79 ms. Allocated memory is still 119.5 MB. Free memory was 94.7 MB in the beginning and 92.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 09:49:40,702 INFO L168 Benchmark]: Boogie Preprocessor took 32.48 ms. Allocated memory is still 119.5 MB. Free memory was 92.6 MB in the beginning and 91.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 09:49:40,702 INFO L168 Benchmark]: RCFGBuilder took 493.77 ms. Allocated memory is still 119.5 MB. Free memory was 91.0 MB in the beginning and 74.2 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-24 09:49:40,702 INFO L168 Benchmark]: TraceAbstraction took 1775.34 ms. Allocated memory is still 119.5 MB. Free memory was 73.7 MB in the beginning and 81.5 MB in the end (delta: -7.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:49:40,705 INFO L168 Benchmark]: Witness Printer took 69.28 ms. Allocated memory is still 119.5 MB. Free memory was 81.5 MB in the beginning and 79.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 09:49:40,708 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 119.5 MB. Free memory is still 99.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 306.05 ms. Allocated memory is still 119.5 MB. Free memory was 82.2 MB in the beginning and 94.7 MB in the end (delta: -12.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 70.79 ms. Allocated memory is still 119.5 MB. Free memory was 94.7 MB in the beginning and 92.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.48 ms. Allocated memory is still 119.5 MB. Free memory was 92.6 MB in the beginning and 91.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 493.77 ms. Allocated memory is still 119.5 MB. Free memory was 91.0 MB in the beginning and 74.2 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1775.34 ms. Allocated memory is still 119.5 MB. Free memory was 73.7 MB in the beginning and 81.5 MB in the end (delta: -7.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 69.28 ms. Allocated memory is still 119.5 MB. Free memory was 81.5 MB in the beginning and 79.4 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: 1695.2ms, OverallIterations: 9, TraceHistogramMax: 3, EmptinessCheckTime: 44.0ms, AutomataDifference: 594.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 97.7ms, InitialAbstractionConstructionTime: 12.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 870 SDtfs, 282 SDslu, 449 SDs, 0 SdLazy, 244 SolverSat, 74 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 268.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.9ms 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: 139.9ms AutomataMinimizationTime, 9 MinimizatonAttempts, 47 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 11 NumberOfFragments, 43 HoareAnnotationTreeSize, 4 FomulaSimplifications, 8 FormulaSimplificationTreeSizeReduction, 33.3ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 17 FormulaSimplificationTreeSizeReductionInter, 55.9ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 23.0ms SsaConstructionTime, 132.0ms SatisfiabilityAnalysisTime, 400.9ms 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! [2021-10-24 09:49:40,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7780875b-dc90-4139-97ee-57b7a6486430/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...