./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_f8e89dd6-1e7d-499d-9de5-98ac337b344e/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_f8e89dd6-1e7d-499d-9de5-98ac337b344e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f8e89dd6-1e7d-499d-9de5-98ac337b344e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f8e89dd6-1e7d-499d-9de5-98ac337b344e/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_f8e89dd6-1e7d-499d-9de5-98ac337b344e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f8e89dd6-1e7d-499d-9de5-98ac337b344e/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fbfa3bfac4b511c6b363106645da3687422db2a8 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 20:54:15,788 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:54:15,791 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:54:15,837 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:54:15,838 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:54:15,839 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:54:15,841 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:54:15,844 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:54:15,846 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:54:15,854 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:54:15,855 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:54:15,857 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:54:15,857 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:54:15,859 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:54:15,860 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:54:15,862 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:54:15,863 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:54:15,864 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:54:15,866 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:54:15,869 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:54:15,871 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:54:15,873 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:54:15,874 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:54:15,875 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:54:15,889 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:54:15,889 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:54:15,890 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:54:15,891 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:54:15,892 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:54:15,893 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:54:15,893 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:54:15,894 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:54:15,895 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:54:15,896 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:54:15,897 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:54:15,897 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:54:15,898 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:54:15,899 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:54:15,899 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:54:15,900 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:54:15,900 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:54:15,901 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f8e89dd6-1e7d-499d-9de5-98ac337b344e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 20:54:15,924 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:54:15,924 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:54:15,925 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:54:15,925 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:54:15,926 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:54:15,926 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:54:15,926 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 20:54:15,926 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 20:54:15,926 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 20:54:15,927 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:54:15,927 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 20:54:15,927 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 20:54:15,927 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 20:54:15,927 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 20:54:15,928 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 20:54:15,928 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:54:15,928 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 20:54:15,928 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:54:15,928 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:54:15,928 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 20:54:15,929 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 20:54:15,929 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:54:15,929 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:54:15,929 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 20:54:15,929 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 20:54:15,930 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 20:54:15,930 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 20:54:15,930 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 20:54:15,930 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:54:15,930 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_f8e89dd6-1e7d-499d-9de5-98ac337b344e/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_f8e89dd6-1e7d-499d-9de5-98ac337b344e/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fbfa3bfac4b511c6b363106645da3687422db2a8 [2020-11-29 20:54:16,207 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:54:16,242 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:54:16,245 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:54:16,246 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:54:16,248 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:54:16,249 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f8e89dd6-1e7d-499d-9de5-98ac337b344e/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound1.c [2020-11-29 20:54:16,328 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f8e89dd6-1e7d-499d-9de5-98ac337b344e/bin/uautomizer/data/51081f02b/97e19f0f495443f29334bac9093d208e/FLAG31b204afc [2020-11-29 20:54:16,862 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:54:16,863 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f8e89dd6-1e7d-499d-9de5-98ac337b344e/sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound1.c [2020-11-29 20:54:16,875 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f8e89dd6-1e7d-499d-9de5-98ac337b344e/bin/uautomizer/data/51081f02b/97e19f0f495443f29334bac9093d208e/FLAG31b204afc [2020-11-29 20:54:17,222 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f8e89dd6-1e7d-499d-9de5-98ac337b344e/bin/uautomizer/data/51081f02b/97e19f0f495443f29334bac9093d208e [2020-11-29 20:54:17,224 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:54:17,226 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 20:54:17,230 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:54:17,230 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:54:17,234 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:54:17,235 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:54:17" (1/1) ... [2020-11-29 20:54:17,237 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@307a3428 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:54:17, skipping insertion in model container [2020-11-29 20:54:17,237 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:54:17" (1/1) ... [2020-11-29 20:54:17,244 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:54:17,259 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:54:17,463 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:54:17,473 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:54:17,522 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:54:17,538 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:54:17,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:54:17 WrapperNode [2020-11-29 20:54:17,539 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:54:17,540 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 20:54:17,540 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 20:54:17,540 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 20:54:17,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:54:17" (1/1) ... [2020-11-29 20:54:17,565 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:54:17" (1/1) ... [2020-11-29 20:54:17,590 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 20:54:17,591 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:54:17,591 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:54:17,591 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:54:17,600 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:54:17" (1/1) ... [2020-11-29 20:54:17,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:54:17" (1/1) ... [2020-11-29 20:54:17,601 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:54:17" (1/1) ... [2020-11-29 20:54:17,602 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:54:17" (1/1) ... [2020-11-29 20:54:17,606 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:54:17" (1/1) ... [2020-11-29 20:54:17,611 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:54:17" (1/1) ... [2020-11-29 20:54:17,612 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:54:17" (1/1) ... [2020-11-29 20:54:17,615 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:54:17,616 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:54:17,616 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:54:17,616 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:54:17,617 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:54:17" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f8e89dd6-1e7d-499d-9de5-98ac337b344e/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:54:17,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 20:54:17,683 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 20:54:17,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:54:17,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:54:18,131 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:54:18,132 INFO L298 CfgBuilder]: Removed 36 assume(true) statements. [2020-11-29 20:54:18,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:54:18 BoogieIcfgContainer [2020-11-29 20:54:18,133 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:54:18,135 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 20:54:18,135 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 20:54:18,138 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 20:54:18,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 08:54:17" (1/3) ... [2020-11-29 20:54:18,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33f9cac4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:54:18, skipping insertion in model container [2020-11-29 20:54:18,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:54:17" (2/3) ... [2020-11-29 20:54:18,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33f9cac4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:54:18, skipping insertion in model container [2020-11-29 20:54:18,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:54:18" (3/3) ... [2020-11-29 20:54:18,141 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-u_unwindbound1.c [2020-11-29 20:54:18,152 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 20:54:18,157 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-11-29 20:54:18,166 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-11-29 20:54:18,186 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 20:54:18,187 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 20:54:18,187 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 20:54:18,187 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:54:18,187 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:54:18,187 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 20:54:18,187 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:54:18,187 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 20:54:18,201 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-11-29 20:54:18,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 20:54:18,205 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:54:18,206 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:54:18,206 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:54:18,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:54:18,212 INFO L82 PathProgramCache]: Analyzing trace with hash 119446382, now seen corresponding path program 1 times [2020-11-29 20:54:18,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:54:18,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264562685] [2020-11-29 20:54:18,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:54:18,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:54:18,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:54:18,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264562685] [2020-11-29 20:54:18,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:54:18,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 20:54:18,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297401863] [2020-11-29 20:54:18,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 20:54:18,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:54:18,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 20:54:18,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 20:54:18,367 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2020-11-29 20:54:18,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:54:18,386 INFO L93 Difference]: Finished difference Result 79 states and 106 transitions. [2020-11-29 20:54:18,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 20:54:18,387 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-29 20:54:18,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:54:18,394 INFO L225 Difference]: With dead ends: 79 [2020-11-29 20:54:18,395 INFO L226 Difference]: Without dead ends: 37 [2020-11-29 20:54:18,397 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 20:54:18,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-29 20:54:18,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-11-29 20:54:18,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-11-29 20:54:18,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-11-29 20:54:18,430 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 8 [2020-11-29 20:54:18,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:54:18,430 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-11-29 20:54:18,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 20:54:18,430 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-11-29 20:54:18,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 20:54:18,431 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:54:18,431 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:54:18,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 20:54:18,432 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:54:18,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:54:18,433 INFO L82 PathProgramCache]: Analyzing trace with hash 176704684, now seen corresponding path program 1 times [2020-11-29 20:54:18,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:54:18,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945630224] [2020-11-29 20:54:18,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:54:18,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:54:18,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:54:18,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945630224] [2020-11-29 20:54:18,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:54:18,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:54:18,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577232515] [2020-11-29 20:54:18,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:54:18,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:54:18,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:54:18,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:54:18,548 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 4 states. [2020-11-29 20:54:19,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:54:19,208 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2020-11-29 20:54:19,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 20:54:19,209 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-29 20:54:19,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:54:19,210 INFO L225 Difference]: With dead ends: 61 [2020-11-29 20:54:19,211 INFO L226 Difference]: Without dead ends: 59 [2020-11-29 20:54:19,211 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:54:19,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-11-29 20:54:19,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 35. [2020-11-29 20:54:19,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-29 20:54:19,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-11-29 20:54:19,224 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 8 [2020-11-29 20:54:19,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:54:19,225 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-11-29 20:54:19,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:54:19,225 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-11-29 20:54:19,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 20:54:19,228 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:54:19,228 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:54:19,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 20:54:19,230 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:54:19,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:54:19,232 INFO L82 PathProgramCache]: Analyzing trace with hash -1985979217, now seen corresponding path program 1 times [2020-11-29 20:54:19,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:54:19,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773502510] [2020-11-29 20:54:19,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:54:19,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:54:19,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:54:19,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773502510] [2020-11-29 20:54:19,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:54:19,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:54:19,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775414188] [2020-11-29 20:54:19,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:54:19,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:54:19,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:54:19,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:54:19,295 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 4 states. [2020-11-29 20:54:19,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:54:19,315 INFO L93 Difference]: Finished difference Result 56 states and 63 transitions. [2020-11-29 20:54:19,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:54:19,317 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-29 20:54:19,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:54:19,318 INFO L225 Difference]: With dead ends: 56 [2020-11-29 20:54:19,318 INFO L226 Difference]: Without dead ends: 37 [2020-11-29 20:54:19,319 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:54:19,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-29 20:54:19,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-11-29 20:54:19,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-11-29 20:54:19,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-11-29 20:54:19,326 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 10 [2020-11-29 20:54:19,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:54:19,326 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-11-29 20:54:19,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:54:19,326 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-11-29 20:54:19,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 20:54:19,327 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:54:19,327 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:54:19,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 20:54:19,327 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:54:19,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:54:19,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1985303953, now seen corresponding path program 1 times [2020-11-29 20:54:19,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:54:19,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510361548] [2020-11-29 20:54:19,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:54:19,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:54:19,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:54:19,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510361548] [2020-11-29 20:54:19,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:54:19,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:54:19,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559542144] [2020-11-29 20:54:19,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:54:19,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:54:19,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:54:19,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:54:19,479 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 4 states. [2020-11-29 20:54:22,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:54:22,106 INFO L93 Difference]: Finished difference Result 56 states and 62 transitions. [2020-11-29 20:54:22,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 20:54:22,107 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-29 20:54:22,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:54:22,108 INFO L225 Difference]: With dead ends: 56 [2020-11-29 20:54:22,108 INFO L226 Difference]: Without dead ends: 54 [2020-11-29 20:54:22,109 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:54:22,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-11-29 20:54:22,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 35. [2020-11-29 20:54:22,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-29 20:54:22,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-11-29 20:54:22,116 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 10 [2020-11-29 20:54:22,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:54:22,117 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-11-29 20:54:22,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:54:22,117 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-11-29 20:54:22,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 20:54:22,117 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:54:22,117 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:54:22,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 20:54:22,118 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:54:22,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:54:22,118 INFO L82 PathProgramCache]: Analyzing trace with hash -911432462, now seen corresponding path program 1 times [2020-11-29 20:54:22,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:54:22,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884882696] [2020-11-29 20:54:22,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:54:22,135 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:54:22,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1104937487] [2020-11-29 20:54:22,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f8e89dd6-1e7d-499d-9de5-98ac337b344e/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:54:22,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:54:22,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-29 20:54:22,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:54:22,327 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 20:54:22,327 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:54:22,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:54:22,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884882696] [2020-11-29 20:54:22,425 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:54:22,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104937487] [2020-11-29 20:54:22,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:54:22,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 20:54:22,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415761134] [2020-11-29 20:54:22,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 20:54:22,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:54:22,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 20:54:22,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-29 20:54:22,427 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 6 states. [2020-11-29 20:54:23,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:54:23,053 INFO L93 Difference]: Finished difference Result 81 states and 93 transitions. [2020-11-29 20:54:23,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 20:54:23,055 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-11-29 20:54:23,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:54:23,056 INFO L225 Difference]: With dead ends: 81 [2020-11-29 20:54:23,056 INFO L226 Difference]: Without dead ends: 58 [2020-11-29 20:54:23,057 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-11-29 20:54:23,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-11-29 20:54:23,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 49. [2020-11-29 20:54:23,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-11-29 20:54:23,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2020-11-29 20:54:23,065 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 12 [2020-11-29 20:54:23,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:54:23,065 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2020-11-29 20:54:23,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 20:54:23,065 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2020-11-29 20:54:23,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 20:54:23,066 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:54:23,066 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:54:23,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:54:23,267 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:54:23,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:54:23,268 INFO L82 PathProgramCache]: Analyzing trace with hash 854054780, now seen corresponding path program 1 times [2020-11-29 20:54:23,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:54:23,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474357633] [2020-11-29 20:54:23,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:54:23,278 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:54:23,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1301198719] [2020-11-29 20:54:23,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f8e89dd6-1e7d-499d-9de5-98ac337b344e/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:54:23,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:54:23,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 20:54:23,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:54:23,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:54:23,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474357633] [2020-11-29 20:54:23,375 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:54:23,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301198719] [2020-11-29 20:54:23,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:54:23,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:54:23,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871444882] [2020-11-29 20:54:23,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 20:54:23,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:54:23,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 20:54:23,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:54:23,377 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand 5 states. [2020-11-29 20:54:23,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:54:23,411 INFO L93 Difference]: Finished difference Result 61 states and 68 transitions. [2020-11-29 20:54:23,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 20:54:23,414 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-11-29 20:54:23,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:54:23,415 INFO L225 Difference]: With dead ends: 61 [2020-11-29 20:54:23,415 INFO L226 Difference]: Without dead ends: 36 [2020-11-29 20:54:23,416 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-29 20:54:23,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-29 20:54:23,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-11-29 20:54:23,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-29 20:54:23,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2020-11-29 20:54:23,421 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 16 [2020-11-29 20:54:23,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:54:23,421 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2020-11-29 20:54:23,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 20:54:23,421 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2020-11-29 20:54:23,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-29 20:54:23,422 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:54:23,422 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:54:23,623 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:54:23,623 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:54:23,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:54:23,623 INFO L82 PathProgramCache]: Analyzing trace with hash 705869687, now seen corresponding path program 1 times [2020-11-29 20:54:23,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:54:23,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978209996] [2020-11-29 20:54:23,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:54:23,636 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:54:23,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1021661768] [2020-11-29 20:54:23,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f8e89dd6-1e7d-499d-9de5-98ac337b344e/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:54:23,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:54:23,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-29 20:54:23,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:54:23,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:54:23,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978209996] [2020-11-29 20:54:23,830 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:54:23,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021661768] [2020-11-29 20:54:23,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:54:23,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 20:54:23,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104846754] [2020-11-29 20:54:23,831 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 20:54:23,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:54:23,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 20:54:23,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 20:54:23,832 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 6 states. [2020-11-29 20:54:23,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:54:23,943 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2020-11-29 20:54:23,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 20:54:23,944 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-11-29 20:54:23,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:54:23,945 INFO L225 Difference]: With dead ends: 44 [2020-11-29 20:54:23,945 INFO L226 Difference]: Without dead ends: 38 [2020-11-29 20:54:23,945 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-29 20:54:23,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-11-29 20:54:23,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 30. [2020-11-29 20:54:23,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-29 20:54:23,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-11-29 20:54:23,950 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 17 [2020-11-29 20:54:23,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:54:23,951 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-11-29 20:54:23,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 20:54:23,951 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-11-29 20:54:23,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-29 20:54:23,952 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:54:23,952 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:54:24,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:54:24,177 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:54:24,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:54:24,178 INFO L82 PathProgramCache]: Analyzing trace with hash 1125726404, now seen corresponding path program 1 times [2020-11-29 20:54:24,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:54:24,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679047634] [2020-11-29 20:54:24,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:54:24,191 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:54:24,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1283982239] [2020-11-29 20:54:24,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f8e89dd6-1e7d-499d-9de5-98ac337b344e/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:54:24,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:54:24,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 20:54:24,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:54:24,314 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:54:24,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679047634] [2020-11-29 20:54:24,314 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:54:24,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283982239] [2020-11-29 20:54:24,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 20:54:24,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-11-29 20:54:24,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109949588] [2020-11-29 20:54:24,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 20:54:24,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:54:24,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 20:54:24,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:54:24,316 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 5 states. [2020-11-29 20:54:24,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:54:24,348 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2020-11-29 20:54:24,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 20:54:24,350 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-11-29 20:54:24,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:54:24,350 INFO L225 Difference]: With dead ends: 40 [2020-11-29 20:54:24,350 INFO L226 Difference]: Without dead ends: 22 [2020-11-29 20:54:24,351 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-29 20:54:24,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-11-29 20:54:24,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-11-29 20:54:24,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-29 20:54:24,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 21 transitions. [2020-11-29 20:54:24,354 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 21 transitions. Word has length 20 [2020-11-29 20:54:24,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:54:24,354 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 21 transitions. [2020-11-29 20:54:24,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 20:54:24,354 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 21 transitions. [2020-11-29 20:54:24,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-29 20:54:24,355 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:54:24,355 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:54:24,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:54:24,565 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:54:24,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:54:24,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1866467861, now seen corresponding path program 1 times [2020-11-29 20:54:24,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:54:24,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339203233] [2020-11-29 20:54:24,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:54:24,578 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:54:24,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1350205785] [2020-11-29 20:54:24,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f8e89dd6-1e7d-499d-9de5-98ac337b344e/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:54:24,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:54:24,685 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:54:24,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:54:24,707 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:54:24,749 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:54:24,765 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 20:54:24,965 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:54:24,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 08:54:24 BoogieIcfgContainer [2020-11-29 20:54:24,999 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 20:54:24,999 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:54:24,999 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:54:24,999 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:54:25,000 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:54:18" (3/4) ... [2020-11-29 20:54:25,001 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 20:54:25,055 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_f8e89dd6-1e7d-499d-9de5-98ac337b344e/bin/uautomizer/witness.graphml [2020-11-29 20:54:25,056 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:54:25,057 INFO L168 Benchmark]: Toolchain (without parser) took 7830.49 ms. Allocated memory was 96.5 MB in the beginning and 123.7 MB in the end (delta: 27.3 MB). Free memory was 68.2 MB in the beginning and 52.9 MB in the end (delta: 15.4 MB). Peak memory consumption was 45.8 MB. Max. memory is 16.1 GB. [2020-11-29 20:54:25,071 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 77.6 MB. Free memory was 48.2 MB in the beginning and 48.2 MB in the end (delta: 48.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:54:25,072 INFO L168 Benchmark]: CACSL2BoogieTranslator took 309.22 ms. Allocated memory is still 96.5 MB. Free memory was 68.1 MB in the beginning and 58.2 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 20:54:25,073 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.49 ms. Allocated memory is still 96.5 MB. Free memory was 58.2 MB in the beginning and 56.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:54:25,073 INFO L168 Benchmark]: Boogie Preprocessor took 23.90 ms. Allocated memory is still 96.5 MB. Free memory was 56.4 MB in the beginning and 55.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:54:25,074 INFO L168 Benchmark]: RCFGBuilder took 517.52 ms. Allocated memory is still 96.5 MB. Free memory was 55.1 MB in the beginning and 72.1 MB in the end (delta: -17.0 MB). Peak memory consumption was 16.6 MB. Max. memory is 16.1 GB. [2020-11-29 20:54:25,075 INFO L168 Benchmark]: TraceAbstraction took 6863.86 ms. Allocated memory was 96.5 MB in the beginning and 123.7 MB in the end (delta: 27.3 MB). Free memory was 71.7 MB in the beginning and 55.8 MB in the end (delta: 15.9 MB). Peak memory consumption was 41.8 MB. Max. memory is 16.1 GB. [2020-11-29 20:54:25,075 INFO L168 Benchmark]: Witness Printer took 56.75 ms. Allocated memory is still 123.7 MB. Free memory was 55.8 MB in the beginning and 52.9 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 20:54:25,080 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 77.6 MB. Free memory was 48.2 MB in the beginning and 48.2 MB in the end (delta: 48.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 309.22 ms. Allocated memory is still 96.5 MB. Free memory was 68.1 MB in the beginning and 58.2 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.49 ms. Allocated memory is still 96.5 MB. Free memory was 58.2 MB in the beginning and 56.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.90 ms. Allocated memory is still 96.5 MB. Free memory was 56.4 MB in the beginning and 55.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 517.52 ms. Allocated memory is still 96.5 MB. Free memory was 55.1 MB in the beginning and 72.1 MB in the end (delta: -17.0 MB). Peak memory consumption was 16.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6863.86 ms. Allocated memory was 96.5 MB in the beginning and 123.7 MB in the end (delta: 27.3 MB). Free memory was 71.7 MB in the beginning and 55.8 MB in the end (delta: 15.9 MB). Peak memory consumption was 41.8 MB. Max. memory is 16.1 GB. * Witness Printer took 56.75 ms. Allocated memory is still 123.7 MB. Free memory was 55.8 MB in the beginning and 52.9 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 8]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L22] int counter = 0; VAL [counter=0] [L24] unsigned int A, B; [L25] unsigned int r, d, p, q; [L26] A = __VERIFIER_nondet_uint() [L27] B = __VERIFIER_nondet_uint() [L12] COND FALSE !(!cond) VAL [counter=0] [L30] r = A [L31] d = B [L32] p = 1 [L33] q = 0 VAL [counter=0] [L35] EXPR counter++ VAL [counter=1] [L35] COND TRUE counter++<1 [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L39] COND FALSE !(!(r >= d)) [L41] d = 2 * d [L42] p = 2 * p VAL [counter=1] [L35] EXPR counter++ VAL [counter=2] [L35] COND FALSE !(counter++<1) [L45] EXPR counter++ VAL [counter=3] [L45] COND FALSE !(counter++<1) [L15] COND FALSE !(!(cond)) VAL [counter=3] [L15] COND TRUE !(cond) VAL [counter=3] [L8] __assert_fail("0", "hard-u.c", 8, "reach_error") VAL [counter=3] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 41 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 6.7s, OverallIterations: 9, TraceHistogramMax: 2, AutomataDifference: 4.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 234 SDtfs, 304 SDslu, 244 SDs, 0 SdLazy, 166 SolverSat, 53 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 3.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 83 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 60 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 122 NumberOfCodeBlocks, 122 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 93 ConstructedInterpolants, 0 QuantifiedInterpolants, 4807 SizeOfPredicates, 17 NumberOfNonLiveVariables, 335 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 8 InterpolantComputations, 7 PerfectInterpolantSequences, 6/7 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...