./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label34.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d983b70-6b18-4d40-aec3-87449aecae9c/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d983b70-6b18-4d40-aec3-87449aecae9c/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d983b70-6b18-4d40-aec3-87449aecae9c/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d983b70-6b18-4d40-aec3-87449aecae9c/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label34.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d983b70-6b18-4d40-aec3-87449aecae9c/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d983b70-6b18-4d40-aec3-87449aecae9c/bin/utaipan-mTDlp9Zugs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7d383be3b45c63d6b7da78462a154ab6c2d74592 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:07:08,704 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:07:08,706 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:07:08,756 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:07:08,757 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:07:08,762 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:07:08,765 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:07:08,770 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:07:08,773 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:07:08,780 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:07:08,781 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:07:08,783 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:07:08,784 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:07:08,787 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:07:08,789 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:07:08,795 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:07:08,797 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:07:08,798 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:07:08,804 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:07:08,811 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:07:08,813 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:07:08,815 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:07:08,819 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:07:08,820 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:07:08,826 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:07:08,826 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:07:08,827 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:07:08,829 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:07:08,829 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:07:08,831 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:07:08,831 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:07:08,832 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:07:08,834 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:07:08,835 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:07:08,837 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:07:08,838 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:07:08,839 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:07:08,839 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:07:08,839 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:07:08,840 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:07:08,841 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:07:08,842 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d983b70-6b18-4d40-aec3-87449aecae9c/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 02:07:08,891 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:07:08,892 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:07:08,893 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:07:08,894 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:07:08,894 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:07:08,894 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:07:08,894 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:07:08,895 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:07:08,895 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:07:08,895 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:07:08,896 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:07:08,897 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:07:08,897 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:07:08,897 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:07:08,897 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:07:08,898 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:07:08,899 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:07:08,899 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:07:08,899 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:07:08,899 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:07:08,900 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:07:08,900 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:07:08,900 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:07:08,900 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:07:08,900 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:07:08,901 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:07:08,901 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:07:08,901 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:07:08,901 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:07:08,903 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:07:08,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:07:08,904 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:07:08,904 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:07:08,904 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:07:08,904 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:07:08,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:07:08,905 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:07:08,905 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:07:08,905 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:07:08,905 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_1d983b70-6b18-4d40-aec3-87449aecae9c/bin/utaipan-mTDlp9Zugs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d983b70-6b18-4d40-aec3-87449aecae9c/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7d383be3b45c63d6b7da78462a154ab6c2d74592 [2021-10-16 02:07:09,212 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:07:09,246 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:07:09,249 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:07:09,250 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:07:09,251 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:07:09,252 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d983b70-6b18-4d40-aec3-87449aecae9c/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/eca-rers2012/Problem01_label34.c [2021-10-16 02:07:09,321 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d983b70-6b18-4d40-aec3-87449aecae9c/bin/utaipan-mTDlp9Zugs/data/d71551079/a3298671c6dc4eab84f28961d637acdb/FLAG5fb1fb46f [2021-10-16 02:07:10,016 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:07:10,018 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d983b70-6b18-4d40-aec3-87449aecae9c/sv-benchmarks/c/eca-rers2012/Problem01_label34.c [2021-10-16 02:07:10,036 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d983b70-6b18-4d40-aec3-87449aecae9c/bin/utaipan-mTDlp9Zugs/data/d71551079/a3298671c6dc4eab84f28961d637acdb/FLAG5fb1fb46f [2021-10-16 02:07:10,232 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d983b70-6b18-4d40-aec3-87449aecae9c/bin/utaipan-mTDlp9Zugs/data/d71551079/a3298671c6dc4eab84f28961d637acdb [2021-10-16 02:07:10,234 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:07:10,236 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:07:10,238 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:07:10,238 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:07:10,242 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:07:10,243 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:07:10" (1/1) ... [2021-10-16 02:07:10,244 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@625dacea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:07:10, skipping insertion in model container [2021-10-16 02:07:10,244 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:07:10" (1/1) ... [2021-10-16 02:07:10,251 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:07:10,317 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:07:10,714 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_1d983b70-6b18-4d40-aec3-87449aecae9c/sv-benchmarks/c/eca-rers2012/Problem01_label34.c[18605,18618] [2021-10-16 02:07:10,742 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:07:10,751 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:07:10,876 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_1d983b70-6b18-4d40-aec3-87449aecae9c/sv-benchmarks/c/eca-rers2012/Problem01_label34.c[18605,18618] [2021-10-16 02:07:10,897 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:07:10,912 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:07:10,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:07:10 WrapperNode [2021-10-16 02:07:10,913 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:07:10,914 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:07:10,914 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:07:10,914 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:07:10,922 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:07:10" (1/1) ... [2021-10-16 02:07:10,942 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:07:10" (1/1) ... [2021-10-16 02:07:11,014 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:07:11,015 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:07:11,015 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:07:11,015 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:07:11,036 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:07:10" (1/1) ... [2021-10-16 02:07:11,036 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:07:10" (1/1) ... [2021-10-16 02:07:11,041 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:07:10" (1/1) ... [2021-10-16 02:07:11,041 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:07:10" (1/1) ... [2021-10-16 02:07:11,086 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:07:10" (1/1) ... [2021-10-16 02:07:11,095 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:07:10" (1/1) ... [2021-10-16 02:07:11,103 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:07:10" (1/1) ... [2021-10-16 02:07:11,111 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:07:11,112 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:07:11,112 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:07:11,113 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:07:11,114 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:07:10" (1/1) ... [2021-10-16 02:07:11,122 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:07:11,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d983b70-6b18-4d40-aec3-87449aecae9c/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:07:11,148 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d983b70-6b18-4d40-aec3-87449aecae9c/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:07:11,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d983b70-6b18-4d40-aec3-87449aecae9c/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:07:11,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 02:07:11,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:07:11,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:07:11,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:07:12,968 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:07:12,968 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-16 02:07:12,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:07:12 BoogieIcfgContainer [2021-10-16 02:07:12,971 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:07:12,972 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:07:12,973 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:07:12,976 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:07:12,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:07:10" (1/3) ... [2021-10-16 02:07:12,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73913dbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:07:12, skipping insertion in model container [2021-10-16 02:07:12,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:07:10" (2/3) ... [2021-10-16 02:07:12,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73913dbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:07:12, skipping insertion in model container [2021-10-16 02:07:12,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:07:12" (3/3) ... [2021-10-16 02:07:12,980 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label34.c [2021-10-16 02:07:12,988 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:07:12,988 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:07:13,039 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:07:13,045 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 02:07:13,045 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:07:13,061 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:07:13,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-10-16 02:07:13,069 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:07:13,070 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:07:13,071 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:07:13,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:07:13,076 INFO L82 PathProgramCache]: Analyzing trace with hash -104652088, now seen corresponding path program 1 times [2021-10-16 02:07:13,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:07:13,086 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706948074] [2021-10-16 02:07:13,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:07:13,087 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:07:13,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:07:13,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:07:13,429 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:07:13,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706948074] [2021-10-16 02:07:13,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706948074] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:07:13,430 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:07:13,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:07:13,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678568532] [2021-10-16 02:07:13,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:07:13,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:07:13,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:07:13,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:07:13,464 INFO L87 Difference]: Start difference. First operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:07:13,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:07:13,954 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2021-10-16 02:07:13,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:07:13,956 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-10-16 02:07:13,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:07:13,973 INFO L225 Difference]: With dead ends: 224 [2021-10-16 02:07:13,973 INFO L226 Difference]: Without dead ends: 145 [2021-10-16 02:07:13,978 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:07:13,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-10-16 02:07:14,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2021-10-16 02:07:14,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.7569444444444444) internal successors, (253), 144 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:07:14,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 253 transitions. [2021-10-16 02:07:14,048 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 253 transitions. Word has length 71 [2021-10-16 02:07:14,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:07:14,050 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 253 transitions. [2021-10-16 02:07:14,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:07:14,050 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 253 transitions. [2021-10-16 02:07:14,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-10-16 02:07:14,056 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:07:14,056 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:07:14,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 02:07:14,057 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:07:14,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:07:14,061 INFO L82 PathProgramCache]: Analyzing trace with hash -322432896, now seen corresponding path program 1 times [2021-10-16 02:07:14,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:07:14,061 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469074637] [2021-10-16 02:07:14,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:07:14,062 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:07:14,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:07:14,244 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 02:07:14,244 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:07:14,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469074637] [2021-10-16 02:07:14,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469074637] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:07:14,245 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:07:14,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:07:14,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394121272] [2021-10-16 02:07:14,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:07:14,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:07:14,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:07:14,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:07:14,248 INFO L87 Difference]: Start difference. First operand 145 states and 253 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:07:14,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:07:14,574 INFO L93 Difference]: Finished difference Result 431 states and 756 transitions. [2021-10-16 02:07:14,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:07:14,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-10-16 02:07:14,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:07:14,578 INFO L225 Difference]: With dead ends: 431 [2021-10-16 02:07:14,578 INFO L226 Difference]: Without dead ends: 287 [2021-10-16 02:07:14,579 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:07:14,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-10-16 02:07:14,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2021-10-16 02:07:14,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.6748251748251748) internal successors, (479), 286 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:07:14,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 479 transitions. [2021-10-16 02:07:14,611 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 479 transitions. Word has length 75 [2021-10-16 02:07:14,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:07:14,612 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 479 transitions. [2021-10-16 02:07:14,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:07:14,612 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 479 transitions. [2021-10-16 02:07:14,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-10-16 02:07:14,618 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:07:14,619 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:07:14,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 02:07:14,619 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:07:14,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:07:14,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1478021858, now seen corresponding path program 1 times [2021-10-16 02:07:14,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:07:14,621 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815915401] [2021-10-16 02:07:14,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:07:14,621 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:07:14,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:07:14,700 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:07:14,701 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:07:14,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815915401] [2021-10-16 02:07:14,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815915401] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:07:14,702 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:07:14,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:07:14,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291017123] [2021-10-16 02:07:14,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:07:14,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:07:14,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:07:14,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:07:14,708 INFO L87 Difference]: Start difference. First operand 287 states and 479 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:07:15,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:07:15,073 INFO L93 Difference]: Finished difference Result 786 states and 1296 transitions. [2021-10-16 02:07:15,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:07:15,074 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-10-16 02:07:15,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:07:15,077 INFO L225 Difference]: With dead ends: 786 [2021-10-16 02:07:15,078 INFO L226 Difference]: Without dead ends: 500 [2021-10-16 02:07:15,080 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:07:15,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2021-10-16 02:07:15,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 500. [2021-10-16 02:07:15,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 499 states have (on average 1.4949899799599198) internal successors, (746), 499 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:07:15,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 746 transitions. [2021-10-16 02:07:15,145 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 746 transitions. Word has length 76 [2021-10-16 02:07:15,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:07:15,145 INFO L470 AbstractCegarLoop]: Abstraction has 500 states and 746 transitions. [2021-10-16 02:07:15,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:07:15,146 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 746 transitions. [2021-10-16 02:07:15,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-10-16 02:07:15,152 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:07:15,152 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:07:15,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-16 02:07:15,153 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:07:15,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:07:15,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1758125476, now seen corresponding path program 1 times [2021-10-16 02:07:15,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:07:15,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095849072] [2021-10-16 02:07:15,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:07:15,155 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:07:15,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:07:15,241 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:07:15,242 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:07:15,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095849072] [2021-10-16 02:07:15,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095849072] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:07:15,246 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:07:15,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:07:15,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220365165] [2021-10-16 02:07:15,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:07:15,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:07:15,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:07:15,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:07:15,249 INFO L87 Difference]: Start difference. First operand 500 states and 746 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:07:15,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:07:15,623 INFO L93 Difference]: Finished difference Result 1354 states and 2009 transitions. [2021-10-16 02:07:15,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:07:15,624 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-10-16 02:07:15,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:07:15,629 INFO L225 Difference]: With dead ends: 1354 [2021-10-16 02:07:15,630 INFO L226 Difference]: Without dead ends: 855 [2021-10-16 02:07:15,637 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:07:15,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2021-10-16 02:07:15,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 642. [2021-10-16 02:07:15,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 641 states have (on average 1.4789391575663027) internal successors, (948), 641 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:07:15,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 948 transitions. [2021-10-16 02:07:15,682 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 948 transitions. Word has length 84 [2021-10-16 02:07:15,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:07:15,683 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 948 transitions. [2021-10-16 02:07:15,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:07:15,685 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 948 transitions. [2021-10-16 02:07:15,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-10-16 02:07:15,688 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:07:15,688 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:07:15,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-16 02:07:15,689 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:07:15,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:07:15,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1676770505, now seen corresponding path program 1 times [2021-10-16 02:07:15,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:07:15,690 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063705453] [2021-10-16 02:07:15,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:07:15,690 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:07:15,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:07:15,762 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-16 02:07:15,762 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:07:15,763 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063705453] [2021-10-16 02:07:15,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063705453] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:07:15,763 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:07:15,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:07:15,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469408097] [2021-10-16 02:07:15,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:07:15,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:07:15,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:07:15,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:07:15,765 INFO L87 Difference]: Start difference. First operand 642 states and 948 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:07:16,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:07:16,075 INFO L93 Difference]: Finished difference Result 1283 states and 1895 transitions. [2021-10-16 02:07:16,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:07:16,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 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) Word has length 87 [2021-10-16 02:07:16,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:07:16,080 INFO L225 Difference]: With dead ends: 1283 [2021-10-16 02:07:16,080 INFO L226 Difference]: Without dead ends: 642 [2021-10-16 02:07:16,082 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:07:16,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2021-10-16 02:07:16,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 642. [2021-10-16 02:07:16,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 641 states have (on average 1.4602184087363494) internal successors, (936), 641 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:07:16,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 936 transitions. [2021-10-16 02:07:16,104 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 936 transitions. Word has length 87 [2021-10-16 02:07:16,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:07:16,105 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 936 transitions. [2021-10-16 02:07:16,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:07:16,105 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 936 transitions. [2021-10-16 02:07:16,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-10-16 02:07:16,111 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:07:16,111 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:07:16,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-16 02:07:16,112 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:07:16,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:07:16,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1135673583, now seen corresponding path program 1 times [2021-10-16 02:07:16,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:07:16,113 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700531970] [2021-10-16 02:07:16,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:07:16,113 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:07:16,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:07:16,209 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-16 02:07:16,211 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:07:16,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700531970] [2021-10-16 02:07:16,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700531970] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 02:07:16,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335122795] [2021-10-16 02:07:16,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:07:16,214 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:07:16,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d983b70-6b18-4d40-aec3-87449aecae9c/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:07:16,218 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d983b70-6b18-4d40-aec3-87449aecae9c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:07:16,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d983b70-6b18-4d40-aec3-87449aecae9c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-16 02:07:16,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:07:16,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:07:16,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:07:16,716 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-16 02:07:16,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:07:16,961 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-16 02:07:16,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [335122795] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:07:16,961 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-16 02:07:16,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2021-10-16 02:07:16,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984232731] [2021-10-16 02:07:16,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:07:16,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:07:16,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:07:16,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:07:16,963 INFO L87 Difference]: Start difference. First operand 642 states and 936 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:07:17,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:07:17,244 INFO L93 Difference]: Finished difference Result 1070 states and 1538 transitions. [2021-10-16 02:07:17,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:07:17,244 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-10-16 02:07:17,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:07:17,251 INFO L225 Difference]: With dead ends: 1070 [2021-10-16 02:07:17,251 INFO L226 Difference]: Without dead ends: 1068 [2021-10-16 02:07:17,252 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 179 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.7ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:07:17,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2021-10-16 02:07:17,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 1068. [2021-10-16 02:07:17,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1068 states, 1067 states have (on average 1.4395501405810684) internal successors, (1536), 1067 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:07:17,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1536 transitions. [2021-10-16 02:07:17,279 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1536 transitions. Word has length 91 [2021-10-16 02:07:17,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:07:17,280 INFO L470 AbstractCegarLoop]: Abstraction has 1068 states and 1536 transitions. [2021-10-16 02:07:17,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:07:17,281 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1536 transitions. [2021-10-16 02:07:17,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-10-16 02:07:17,284 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:07:17,284 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:07:17,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d983b70-6b18-4d40-aec3-87449aecae9c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:07:17,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d983b70-6b18-4d40-aec3-87449aecae9c/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-16 02:07:17,498 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:07:17,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:07:17,499 INFO L82 PathProgramCache]: Analyzing trace with hash 1965226387, now seen corresponding path program 1 times [2021-10-16 02:07:17,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:07:17,499 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292070948] [2021-10-16 02:07:17,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:07:17,499 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:07:17,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:07:17,572 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-10-16 02:07:17,572 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:07:17,572 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292070948] [2021-10-16 02:07:17,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292070948] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:07:17,572 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:07:17,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:07:17,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28240097] [2021-10-16 02:07:17,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:07:17,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:07:17,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:07:17,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:07:17,575 INFO L87 Difference]: Start difference. First operand 1068 states and 1536 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:07:17,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:07:17,945 INFO L93 Difference]: Finished difference Result 1920 states and 2754 transitions. [2021-10-16 02:07:17,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:07:17,946 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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 149 [2021-10-16 02:07:17,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:07:17,946 INFO L225 Difference]: With dead ends: 1920 [2021-10-16 02:07:17,946 INFO L226 Difference]: Without dead ends: 0 [2021-10-16 02:07:17,948 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:07:17,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-16 02:07:17,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-16 02:07:17,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:07:17,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-16 02:07:17,949 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 149 [2021-10-16 02:07:17,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:07:17,949 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-16 02:07:17,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:07:17,950 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-16 02:07:17,950 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-16 02:07:17,952 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:07:17,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-16 02:07:17,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-16 02:07:17,974 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:07:17,985 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:07:18,001 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:07:18,054 INFO L857 garLoopResultBuilder]: For program point L102(lines 102 400) no Hoare annotation was computed. [2021-10-16 02:07:18,055 INFO L857 garLoopResultBuilder]: For program point L598(line 598) no Hoare annotation was computed. [2021-10-16 02:07:18,055 INFO L857 garLoopResultBuilder]: For program point L334(lines 334 400) no Hoare annotation was computed. [2021-10-16 02:07:18,055 INFO L857 garLoopResultBuilder]: For program point L500-1(lines 40 585) no Hoare annotation was computed. [2021-10-16 02:07:18,055 INFO L857 garLoopResultBuilder]: For program point L302(lines 302 400) no Hoare annotation was computed. [2021-10-16 02:07:18,055 INFO L857 garLoopResultBuilder]: For program point L170(lines 170 400) no Hoare annotation was computed. [2021-10-16 02:07:18,056 INFO L857 garLoopResultBuilder]: For program point L501(line 501) no Hoare annotation was computed. [2021-10-16 02:07:18,056 INFO L857 garLoopResultBuilder]: For program point L204(lines 204 400) no Hoare annotation was computed. [2021-10-16 02:07:18,056 INFO L857 garLoopResultBuilder]: For program point L72(lines 72 400) no Hoare annotation was computed. [2021-10-16 02:07:18,056 INFO L857 garLoopResultBuilder]: For program point L271(lines 271 400) no Hoare annotation was computed. [2021-10-16 02:07:18,056 INFO L857 garLoopResultBuilder]: For program point L139(lines 139 400) no Hoare annotation was computed. [2021-10-16 02:07:18,056 INFO L857 garLoopResultBuilder]: For program point L371(lines 371 400) no Hoare annotation was computed. [2021-10-16 02:07:18,057 INFO L857 garLoopResultBuilder]: For program point L107(lines 107 400) no Hoare annotation was computed. [2021-10-16 02:07:18,057 INFO L857 garLoopResultBuilder]: For program point L41(lines 41 400) no Hoare annotation was computed. [2021-10-16 02:07:18,057 INFO L857 garLoopResultBuilder]: For program point L339(lines 339 400) no Hoare annotation was computed. [2021-10-16 02:07:18,057 INFO L857 garLoopResultBuilder]: For program point L207(lines 207 400) no Hoare annotation was computed. [2021-10-16 02:07:18,057 INFO L857 garLoopResultBuilder]: For program point L75(lines 75 400) no Hoare annotation was computed. [2021-10-16 02:07:18,057 INFO L857 garLoopResultBuilder]: For program point L373(lines 373 400) no Hoare annotation was computed. [2021-10-16 02:07:18,058 INFO L857 garLoopResultBuilder]: For program point L241(lines 241 400) no Hoare annotation was computed. [2021-10-16 02:07:18,058 INFO L857 garLoopResultBuilder]: For program point L175(lines 175 400) no Hoare annotation was computed. [2021-10-16 02:07:18,058 INFO L857 garLoopResultBuilder]: For program point L275(lines 275 400) no Hoare annotation was computed. [2021-10-16 02:07:18,058 INFO L857 garLoopResultBuilder]: For program point L375(lines 375 400) no Hoare annotation was computed. [2021-10-16 02:07:18,058 INFO L857 garLoopResultBuilder]: For program point L309(lines 309 400) no Hoare annotation was computed. [2021-10-16 02:07:18,058 INFO L857 garLoopResultBuilder]: For program point L45(lines 45 400) no Hoare annotation was computed. [2021-10-16 02:07:18,059 INFO L857 garLoopResultBuilder]: For program point L343(lines 343 400) no Hoare annotation was computed. [2021-10-16 02:07:18,059 INFO L857 garLoopResultBuilder]: For program point L112(lines 112 400) no Hoare annotation was computed. [2021-10-16 02:07:18,059 INFO L857 garLoopResultBuilder]: For program point L278(lines 278 400) no Hoare annotation was computed. [2021-10-16 02:07:18,059 INFO L857 garLoopResultBuilder]: For program point L146(lines 146 400) no Hoare annotation was computed. [2021-10-16 02:07:18,059 INFO L857 garLoopResultBuilder]: For program point L213(lines 213 400) no Hoare annotation was computed. [2021-10-16 02:07:18,059 INFO L857 garLoopResultBuilder]: For program point L82(lines 82 400) no Hoare annotation was computed. [2021-10-16 02:07:18,060 INFO L857 garLoopResultBuilder]: For program point L347(lines 347 400) no Hoare annotation was computed. [2021-10-16 02:07:18,060 INFO L857 garLoopResultBuilder]: For program point L248(lines 248 400) no Hoare annotation was computed. [2021-10-16 02:07:18,060 INFO L857 garLoopResultBuilder]: For program point L183(lines 183 400) no Hoare annotation was computed. [2021-10-16 02:07:18,060 INFO L857 garLoopResultBuilder]: For program point L150(lines 150 400) no Hoare annotation was computed. [2021-10-16 02:07:18,060 INFO L857 garLoopResultBuilder]: For program point L382(lines 382 400) no Hoare annotation was computed. [2021-10-16 02:07:18,060 INFO L857 garLoopResultBuilder]: For program point L316(lines 316 400) no Hoare annotation was computed. [2021-10-16 02:07:18,061 INFO L857 garLoopResultBuilder]: For program point L283(lines 283 400) no Hoare annotation was computed. [2021-10-16 02:07:18,061 INFO L857 garLoopResultBuilder]: For program point L118(lines 118 400) no Hoare annotation was computed. [2021-10-16 02:07:18,061 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-16 02:07:18,061 INFO L857 garLoopResultBuilder]: For program point L218(lines 218 400) no Hoare annotation was computed. [2021-10-16 02:07:18,061 INFO L857 garLoopResultBuilder]: For program point L53(lines 53 400) no Hoare annotation was computed. [2021-10-16 02:07:18,061 INFO L857 garLoopResultBuilder]: For program point L154(lines 154 400) no Hoare annotation was computed. [2021-10-16 02:07:18,062 INFO L853 garLoopResultBuilder]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse0 (= ~a7~0 1)) (.cse2 (<= ~a16~0 5)) (.cse1 (= ~a21~0 1))) (or (and .cse0 (= ~a20~0 1)) (and .cse1 .cse0 .cse2) (and (= ~a17~0 1) .cse0 .cse2) (and (<= ~a7~0 0) .cse1))) [2021-10-16 02:07:18,062 INFO L857 garLoopResultBuilder]: For program point L188(lines 188 400) no Hoare annotation was computed. [2021-10-16 02:07:18,062 INFO L857 garLoopResultBuilder]: For program point L387(lines 387 400) no Hoare annotation was computed. [2021-10-16 02:07:18,062 INFO L857 garLoopResultBuilder]: For program point L288(lines 288 400) no Hoare annotation was computed. [2021-10-16 02:07:18,063 INFO L857 garLoopResultBuilder]: For program point L255(lines 255 400) no Hoare annotation was computed. [2021-10-16 02:07:18,063 INFO L857 garLoopResultBuilder]: For program point L90(lines 90 400) no Hoare annotation was computed. [2021-10-16 02:07:18,063 INFO L857 garLoopResultBuilder]: For program point L355(lines 355 400) no Hoare annotation was computed. [2021-10-16 02:07:18,063 INFO L857 garLoopResultBuilder]: For program point L322(lines 322 400) no Hoare annotation was computed. [2021-10-16 02:07:18,063 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-16 02:07:18,063 INFO L857 garLoopResultBuilder]: For program point L124(lines 124 400) no Hoare annotation was computed. [2021-10-16 02:07:18,064 INFO L860 garLoopResultBuilder]: At program point L587(lines 587 604) the Hoare annotation is: true [2021-10-16 02:07:18,064 INFO L857 garLoopResultBuilder]: For program point L224(lines 224 400) no Hoare annotation was computed. [2021-10-16 02:07:18,064 INFO L857 garLoopResultBuilder]: For program point L158(lines 158 400) no Hoare annotation was computed. [2021-10-16 02:07:18,064 INFO L857 garLoopResultBuilder]: For program point L59(lines 59 400) no Hoare annotation was computed. [2021-10-16 02:07:18,064 INFO L857 garLoopResultBuilder]: For program point L94(lines 94 400) no Hoare annotation was computed. [2021-10-16 02:07:18,064 INFO L857 garLoopResultBuilder]: For program point L392(lines 392 400) no Hoare annotation was computed. [2021-10-16 02:07:18,065 INFO L857 garLoopResultBuilder]: For program point L326(lines 326 400) no Hoare annotation was computed. [2021-10-16 02:07:18,065 INFO L857 garLoopResultBuilder]: For program point L260(lines 260 400) no Hoare annotation was computed. [2021-10-16 02:07:18,065 INFO L857 garLoopResultBuilder]: For program point L228(lines 228 400) no Hoare annotation was computed. [2021-10-16 02:07:18,065 INFO L857 garLoopResultBuilder]: For program point L162(lines 162 400) no Hoare annotation was computed. [2021-10-16 02:07:18,065 INFO L857 garLoopResultBuilder]: For program point L129(lines 129 400) no Hoare annotation was computed. [2021-10-16 02:07:18,065 INFO L857 garLoopResultBuilder]: For program point L328(lines 328 400) no Hoare annotation was computed. [2021-10-16 02:07:18,066 INFO L857 garLoopResultBuilder]: For program point L196(lines 196 400) no Hoare annotation was computed. [2021-10-16 02:07:18,066 INFO L857 garLoopResultBuilder]: For program point L64(lines 64 400) no Hoare annotation was computed. [2021-10-16 02:07:18,066 INFO L853 garLoopResultBuilder]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse0 (= ~a7~0 1)) (.cse2 (<= ~a16~0 5)) (.cse1 (= ~a21~0 1))) (or (and .cse0 (= ~a20~0 1)) (and .cse1 .cse0 .cse2) (and (= ~a17~0 1) .cse0 .cse2) (and (<= ~a7~0 0) .cse1))) [2021-10-16 02:07:18,066 INFO L857 garLoopResultBuilder]: For program point L296(lines 296 400) no Hoare annotation was computed. [2021-10-16 02:07:18,066 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 501) no Hoare annotation was computed. [2021-10-16 02:07:18,066 INFO L857 garLoopResultBuilder]: For program point L363(lines 363 400) no Hoare annotation was computed. [2021-10-16 02:07:18,067 INFO L857 garLoopResultBuilder]: For program point L199(lines 199 400) no Hoare annotation was computed. [2021-10-16 02:07:18,067 INFO L857 garLoopResultBuilder]: For program point L497-1(lines 40 585) no Hoare annotation was computed. [2021-10-16 02:07:18,067 INFO L857 garLoopResultBuilder]: For program point L365(lines 365 400) no Hoare annotation was computed. [2021-10-16 02:07:18,067 INFO L857 garLoopResultBuilder]: For program point L266(lines 266 400) no Hoare annotation was computed. [2021-10-16 02:07:18,067 INFO L857 garLoopResultBuilder]: For program point L233(lines 233 400) no Hoare annotation was computed. [2021-10-16 02:07:18,067 INFO L857 garLoopResultBuilder]: For program point L134(lines 134 400) no Hoare annotation was computed. [2021-10-16 02:07:18,072 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:07:18,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:07:18 BoogieIcfgContainer [2021-10-16 02:07:18,087 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:07:18,088 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:07:18,088 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:07:18,088 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:07:18,089 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:07:12" (3/4) ... [2021-10-16 02:07:18,092 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-16 02:07:18,112 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 108 nodes and edges [2021-10-16 02:07:18,114 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2021-10-16 02:07:18,115 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-16 02:07:18,117 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 02:07:18,260 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d983b70-6b18-4d40-aec3-87449aecae9c/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 02:07:18,261 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:07:18,262 INFO L168 Benchmark]: Toolchain (without parser) took 8025.23 ms. Allocated memory was 94.4 MB in the beginning and 169.9 MB in the end (delta: 75.5 MB). Free memory was 52.4 MB in the beginning and 134.0 MB in the end (delta: -81.7 MB). Peak memory consumption was 86.8 MB. Max. memory is 16.1 GB. [2021-10-16 02:07:18,263 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 94.4 MB. Free memory is still 70.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:07:18,263 INFO L168 Benchmark]: CACSL2BoogieTranslator took 675.25 ms. Allocated memory is still 94.4 MB. Free memory was 52.1 MB in the beginning and 51.9 MB in the end (delta: 245.0 kB). Peak memory consumption was 4.7 MB. Max. memory is 16.1 GB. [2021-10-16 02:07:18,264 INFO L168 Benchmark]: Boogie Procedure Inliner took 100.43 ms. Allocated memory is still 94.4 MB. Free memory was 51.7 MB in the beginning and 46.1 MB in the end (delta: 5.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 02:07:18,264 INFO L168 Benchmark]: Boogie Preprocessor took 96.61 ms. Allocated memory is still 94.4 MB. Free memory was 46.1 MB in the beginning and 41.7 MB in the end (delta: 4.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-16 02:07:18,265 INFO L168 Benchmark]: RCFGBuilder took 1858.65 ms. Allocated memory was 94.4 MB in the beginning and 117.4 MB in the end (delta: 23.1 MB). Free memory was 41.7 MB in the beginning and 77.2 MB in the end (delta: -35.5 MB). Peak memory consumption was 29.0 MB. Max. memory is 16.1 GB. [2021-10-16 02:07:18,265 INFO L168 Benchmark]: TraceAbstraction took 5114.76 ms. Allocated memory was 117.4 MB in the beginning and 169.9 MB in the end (delta: 52.4 MB). Free memory was 77.2 MB in the beginning and 54.5 MB in the end (delta: 22.7 MB). Peak memory consumption was 73.7 MB. Max. memory is 16.1 GB. [2021-10-16 02:07:18,265 INFO L168 Benchmark]: Witness Printer took 173.10 ms. Allocated memory is still 169.9 MB. Free memory was 54.5 MB in the beginning and 134.0 MB in the end (delta: -79.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-16 02:07:18,268 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 94.4 MB. Free memory is still 70.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 675.25 ms. Allocated memory is still 94.4 MB. Free memory was 52.1 MB in the beginning and 51.9 MB in the end (delta: 245.0 kB). Peak memory consumption was 4.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 100.43 ms. Allocated memory is still 94.4 MB. Free memory was 51.7 MB in the beginning and 46.1 MB in the end (delta: 5.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 96.61 ms. Allocated memory is still 94.4 MB. Free memory was 46.1 MB in the beginning and 41.7 MB in the end (delta: 4.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1858.65 ms. Allocated memory was 94.4 MB in the beginning and 117.4 MB in the end (delta: 23.1 MB). Free memory was 41.7 MB in the beginning and 77.2 MB in the end (delta: -35.5 MB). Peak memory consumption was 29.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5114.76 ms. Allocated memory was 117.4 MB in the beginning and 169.9 MB in the end (delta: 52.4 MB). Free memory was 77.2 MB in the beginning and 54.5 MB in the end (delta: 22.7 MB). Peak memory consumption was 73.7 MB. Max. memory is 16.1 GB. * Witness Printer took 173.10 ms. Allocated memory is still 169.9 MB. Free memory was 54.5 MB in the beginning and 134.0 MB in the end (delta: -79.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 501]: 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: 5034.9ms, OverallIterations: 7, TraceHistogramMax: 5, EmptinessCheckTime: 42.6ms, AutomataDifference: 2606.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 101.0ms, InitialAbstractionConstructionTime: 11.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 306 SDtfs, 383 SDslu, 28 SDs, 0 SdLazy, 1449 SolverSat, 408 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1793.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 197 GetRequests, 187 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1068occurred in iteration=6, InterpolantAutomatonStates: 21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 247.7ms AutomataMinimizationTime, 7 MinimizatonAttempts, 213 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 29 NumberOfFragments, 71 HoareAnnotationTreeSize, 3 FomulaSimplifications, 356 FormulaSimplificationTreeSizeReduction, 57.9ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 35.6ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 92.1ms SsaConstructionTime, 286.3ms SatisfiabilityAnalysisTime, 1157.4ms InterpolantComputationTime, 724 NumberOfCodeBlocks, 724 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 806 ConstructedInterpolants, 0 QuantifiedInterpolants, 1581 SizeOfPredicates, 0 NumberOfNonLiveVariables, 304 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 256/259 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: 593]: Loop Invariant Derived loop invariant: (((a7 == 1 && a20 == 1) || ((a21 == 1 && a7 == 1) && a16 <= 5)) || ((a17 == 1 && a7 == 1) && a16 <= 5)) || (a7 <= 0 && a21 == 1) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: (((a7 == 1 && a20 == 1) || ((a21 == 1 && a7 == 1) && a16 <= 5)) || ((a17 == 1 && a7 == 1) && a16 <= 5)) || (a7 <= 0 && a21 == 1) RESULT: Ultimate proved your program to be correct! [2021-10-16 02:07:18,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d983b70-6b18-4d40-aec3-87449aecae9c/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...