./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/data_structures_set_multi_proc_ground-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-examples/data_structures_set_multi_proc_ground-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 4c9c46abbea18888bba6501dfe6c704a11e8fe399c985999e1e07c66bb12b728 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-27 21:18:28,794 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-27 21:18:28,797 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-27 21:18:28,840 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-27 21:18:28,841 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-27 21:18:28,844 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-27 21:18:28,845 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-27 21:18:28,850 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-27 21:18:28,852 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-27 21:18:28,856 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-27 21:18:28,857 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-27 21:18:28,861 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-27 21:18:28,861 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-27 21:18:28,863 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-27 21:18:28,865 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-27 21:18:28,867 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-27 21:18:28,868 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-27 21:18:28,869 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-27 21:18:28,871 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-27 21:18:28,876 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-27 21:18:28,877 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-27 21:18:28,878 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-27 21:18:28,879 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-27 21:18:28,881 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-27 21:18:28,886 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-27 21:18:28,887 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-27 21:18:28,887 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-27 21:18:28,889 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-27 21:18:28,889 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-27 21:18:28,890 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-27 21:18:28,890 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-27 21:18:28,891 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-27 21:18:28,892 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-27 21:18:28,893 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-27 21:18:28,894 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-27 21:18:28,894 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-27 21:18:28,895 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-27 21:18:28,895 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-27 21:18:28,895 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-27 21:18:28,897 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-27 21:18:28,897 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-27 21:18:28,898 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-27 21:18:28,930 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-27 21:18:28,931 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-27 21:18:28,932 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-27 21:18:28,932 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-27 21:18:28,933 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-27 21:18:28,933 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-27 21:18:28,934 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-27 21:18:28,935 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-27 21:18:28,935 INFO L138 SettingsManager]: * Use SBE=true [2021-12-27 21:18:28,935 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-27 21:18:28,936 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-27 21:18:28,936 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-27 21:18:28,936 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-27 21:18:28,936 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-27 21:18:28,937 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-27 21:18:28,937 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-27 21:18:28,937 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-27 21:18:28,937 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-27 21:18:28,937 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-27 21:18:28,938 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-27 21:18:28,938 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-27 21:18:28,938 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-27 21:18:28,938 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-27 21:18:28,938 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-27 21:18:28,939 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-27 21:18:28,939 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-27 21:18:28,939 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-27 21:18:28,939 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-27 21:18:28,939 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-27 21:18:28,940 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-27 21:18:28,940 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-27 21:18:28,940 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-27 21:18:28,940 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-27 21:18:28,941 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c9c46abbea18888bba6501dfe6c704a11e8fe399c985999e1e07c66bb12b728 [2021-12-27 21:18:29,273 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-27 21:18:29,291 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-27 21:18:29,293 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-27 21:18:29,294 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-27 21:18:29,296 INFO L275 PluginConnector]: CDTParser initialized [2021-12-27 21:18:29,297 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/data_structures_set_multi_proc_ground-1.i [2021-12-27 21:18:29,355 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cab0711a1/b8a85fd20e1b4a2b8697db1d11433e92/FLAG7082e4e61 [2021-12-27 21:18:29,737 INFO L306 CDTParser]: Found 1 translation units. [2021-12-27 21:18:29,737 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/data_structures_set_multi_proc_ground-1.i [2021-12-27 21:18:29,748 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cab0711a1/b8a85fd20e1b4a2b8697db1d11433e92/FLAG7082e4e61 [2021-12-27 21:18:30,164 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cab0711a1/b8a85fd20e1b4a2b8697db1d11433e92 [2021-12-27 21:18:30,166 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-27 21:18:30,167 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-27 21:18:30,168 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-27 21:18:30,169 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-27 21:18:30,172 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-27 21:18:30,173 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 09:18:30" (1/1) ... [2021-12-27 21:18:30,174 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55e594cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:18:30, skipping insertion in model container [2021-12-27 21:18:30,174 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 09:18:30" (1/1) ... [2021-12-27 21:18:30,180 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-27 21:18:30,204 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-27 21:18:30,366 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/data_structures_set_multi_proc_ground-1.i[832,845] [2021-12-27 21:18:30,406 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-27 21:18:30,414 INFO L203 MainTranslator]: Completed pre-run [2021-12-27 21:18:30,433 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/data_structures_set_multi_proc_ground-1.i[832,845] [2021-12-27 21:18:30,455 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-27 21:18:30,482 INFO L208 MainTranslator]: Completed translation [2021-12-27 21:18:30,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:18:30 WrapperNode [2021-12-27 21:18:30,483 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-27 21:18:30,484 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-27 21:18:30,484 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-27 21:18:30,484 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-27 21:18:30,489 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:18:30" (1/1) ... [2021-12-27 21:18:30,502 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:18:30" (1/1) ... [2021-12-27 21:18:30,531 INFO L137 Inliner]: procedures = 18, calls = 26, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 137 [2021-12-27 21:18:30,531 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-27 21:18:30,532 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-27 21:18:30,532 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-27 21:18:30,533 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-27 21:18:30,539 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:18:30" (1/1) ... [2021-12-27 21:18:30,539 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:18:30" (1/1) ... [2021-12-27 21:18:30,550 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:18:30" (1/1) ... [2021-12-27 21:18:30,551 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:18:30" (1/1) ... [2021-12-27 21:18:30,560 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:18:30" (1/1) ... [2021-12-27 21:18:30,569 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:18:30" (1/1) ... [2021-12-27 21:18:30,571 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:18:30" (1/1) ... [2021-12-27 21:18:30,576 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-27 21:18:30,578 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-27 21:18:30,579 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-27 21:18:30,580 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-27 21:18:30,580 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:18:30" (1/1) ... [2021-12-27 21:18:30,586 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-27 21:18:30,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-27 21:18:30,613 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-27 21:18:30,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-27 21:18:30,651 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-27 21:18:30,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-27 21:18:30,651 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-27 21:18:30,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-27 21:18:30,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-27 21:18:30,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-27 21:18:30,652 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-27 21:18:30,652 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-27 21:18:30,652 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-27 21:18:30,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-27 21:18:30,713 INFO L234 CfgBuilder]: Building ICFG [2021-12-27 21:18:30,714 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-27 21:18:30,921 INFO L275 CfgBuilder]: Performing block encoding [2021-12-27 21:18:30,947 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-27 21:18:30,947 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-12-27 21:18:30,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 09:18:30 BoogieIcfgContainer [2021-12-27 21:18:30,949 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-27 21:18:30,950 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-27 21:18:30,950 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-27 21:18:30,953 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-27 21:18:30,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.12 09:18:30" (1/3) ... [2021-12-27 21:18:30,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a989eeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 09:18:30, skipping insertion in model container [2021-12-27 21:18:30,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:18:30" (2/3) ... [2021-12-27 21:18:30,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a989eeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 09:18:30, skipping insertion in model container [2021-12-27 21:18:30,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 09:18:30" (3/3) ... [2021-12-27 21:18:30,956 INFO L111 eAbstractionObserver]: Analyzing ICFG data_structures_set_multi_proc_ground-1.i [2021-12-27 21:18:30,960 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-27 21:18:30,960 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-27 21:18:31,006 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-27 21:18:31,011 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-27 21:18:31,011 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-27 21:18:31,026 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 37 states have internal predecessors, (56), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-27 21:18:31,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-27 21:18:31,029 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 21:18:31,030 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 21:18:31,030 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 21:18:31,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 21:18:31,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1976888394, now seen corresponding path program 1 times [2021-12-27 21:18:31,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 21:18:31,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924540462] [2021-12-27 21:18:31,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 21:18:31,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 21:18:31,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 21:18:31,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-27 21:18:31,197 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 21:18:31,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924540462] [2021-12-27 21:18:31,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924540462] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 21:18:31,198 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-27 21:18:31,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-27 21:18:31,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706291555] [2021-12-27 21:18:31,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 21:18:31,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-27 21:18:31,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 21:18:31,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-27 21:18:31,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-27 21:18:31,234 INFO L87 Difference]: Start difference. First operand has 41 states, 36 states have (on average 1.5555555555555556) internal successors, (56), 37 states have internal predecessors, (56), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 21:18:31,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 21:18:31,315 INFO L93 Difference]: Finished difference Result 110 states and 169 transitions. [2021-12-27 21:18:31,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-27 21:18:31,318 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-12-27 21:18:31,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 21:18:31,328 INFO L225 Difference]: With dead ends: 110 [2021-12-27 21:18:31,328 INFO L226 Difference]: Without dead ends: 65 [2021-12-27 21:18:31,331 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-27 21:18:31,335 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 34 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-27 21:18:31,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 82 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-27 21:18:31,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-12-27 21:18:31,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 38. [2021-12-27 21:18:31,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 34 states have (on average 1.2941176470588236) internal successors, (44), 34 states have internal predecessors, (44), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-27 21:18:31,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 48 transitions. [2021-12-27 21:18:31,386 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 48 transitions. Word has length 10 [2021-12-27 21:18:31,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 21:18:31,387 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 48 transitions. [2021-12-27 21:18:31,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 21:18:31,387 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 48 transitions. [2021-12-27 21:18:31,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-27 21:18:31,388 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 21:18:31,388 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 21:18:31,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-27 21:18:31,388 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 21:18:31,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 21:18:31,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1321690828, now seen corresponding path program 1 times [2021-12-27 21:18:31,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 21:18:31,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817011485] [2021-12-27 21:18:31,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 21:18:31,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 21:18:31,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 21:18:31,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-27 21:18:31,467 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 21:18:31,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817011485] [2021-12-27 21:18:31,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817011485] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-27 21:18:31,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376781752] [2021-12-27 21:18:31,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 21:18:31,469 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-27 21:18:31,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-27 21:18:31,471 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-27 21:18:31,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-27 21:18:31,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 21:18:31,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-27 21:18:31,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-27 21:18:31,641 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-27 21:18:31,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-27 21:18:31,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-27 21:18:31,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [376781752] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-27 21:18:31,699 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-27 21:18:31,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-12-27 21:18:31,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570222680] [2021-12-27 21:18:31,700 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-27 21:18:31,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-27 21:18:31,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 21:18:31,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-27 21:18:31,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-12-27 21:18:31,703 INFO L87 Difference]: Start difference. First operand 38 states and 48 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 21:18:31,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 21:18:31,853 INFO L93 Difference]: Finished difference Result 181 states and 243 transitions. [2021-12-27 21:18:31,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-27 21:18:31,853 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-12-27 21:18:31,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 21:18:31,856 INFO L225 Difference]: With dead ends: 181 [2021-12-27 21:18:31,858 INFO L226 Difference]: Without dead ends: 148 [2021-12-27 21:18:31,858 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-12-27 21:18:31,860 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 147 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-27 21:18:31,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 202 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-27 21:18:31,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-12-27 21:18:31,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 44. [2021-12-27 21:18:31,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 40 states have (on average 1.25) internal successors, (50), 40 states have internal predecessors, (50), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-27 21:18:31,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 54 transitions. [2021-12-27 21:18:31,892 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 54 transitions. Word has length 12 [2021-12-27 21:18:31,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 21:18:31,892 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 54 transitions. [2021-12-27 21:18:31,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 21:18:31,893 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 54 transitions. [2021-12-27 21:18:31,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-27 21:18:31,893 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 21:18:31,894 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 21:18:31,922 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-27 21:18:32,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-27 21:18:32,119 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 21:18:32,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 21:18:32,120 INFO L85 PathProgramCache]: Analyzing trace with hash -202652846, now seen corresponding path program 2 times [2021-12-27 21:18:32,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 21:18:32,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885323207] [2021-12-27 21:18:32,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 21:18:32,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 21:18:32,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 21:18:32,225 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-27 21:18:32,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 21:18:32,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885323207] [2021-12-27 21:18:32,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885323207] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 21:18:32,226 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-27 21:18:32,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-27 21:18:32,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699943168] [2021-12-27 21:18:32,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 21:18:32,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-27 21:18:32,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 21:18:32,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-27 21:18:32,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-27 21:18:32,234 INFO L87 Difference]: Start difference. First operand 44 states and 54 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 21:18:32,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 21:18:32,262 INFO L93 Difference]: Finished difference Result 82 states and 103 transitions. [2021-12-27 21:18:32,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-27 21:18:32,262 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-12-27 21:18:32,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 21:18:32,263 INFO L225 Difference]: With dead ends: 82 [2021-12-27 21:18:32,263 INFO L226 Difference]: Without dead ends: 48 [2021-12-27 21:18:32,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-27 21:18:32,265 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 39 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-27 21:18:32,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 56 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-27 21:18:32,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-12-27 21:18:32,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2021-12-27 21:18:32,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 44 states have (on average 1.25) internal successors, (55), 44 states have internal predecessors, (55), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-27 21:18:32,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 57 transitions. [2021-12-27 21:18:32,271 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 57 transitions. Word has length 18 [2021-12-27 21:18:32,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 21:18:32,271 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 57 transitions. [2021-12-27 21:18:32,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 21:18:32,272 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 57 transitions. [2021-12-27 21:18:32,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-27 21:18:32,272 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 21:18:32,272 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 21:18:32,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-27 21:18:32,273 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 21:18:32,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 21:18:32,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1069304186, now seen corresponding path program 1 times [2021-12-27 21:18:32,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 21:18:32,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580915125] [2021-12-27 21:18:32,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 21:18:32,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 21:18:32,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 21:18:32,313 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-12-27 21:18:32,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 21:18:32,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580915125] [2021-12-27 21:18:32,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580915125] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 21:18:32,314 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-27 21:18:32,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-27 21:18:32,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412963769] [2021-12-27 21:18:32,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 21:18:32,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-27 21:18:32,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 21:18:32,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-27 21:18:32,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-27 21:18:32,316 INFO L87 Difference]: Start difference. First operand 47 states and 57 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 21:18:32,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 21:18:32,340 INFO L93 Difference]: Finished difference Result 90 states and 112 transitions. [2021-12-27 21:18:32,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-27 21:18:32,340 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-12-27 21:18:32,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 21:18:32,341 INFO L225 Difference]: With dead ends: 90 [2021-12-27 21:18:32,343 INFO L226 Difference]: Without dead ends: 59 [2021-12-27 21:18:32,343 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-27 21:18:32,344 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 12 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-27 21:18:32,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 63 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-27 21:18:32,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-12-27 21:18:32,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 48. [2021-12-27 21:18:32,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 45 states have (on average 1.2444444444444445) internal successors, (56), 45 states have internal predecessors, (56), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-27 21:18:32,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2021-12-27 21:18:32,351 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 58 transitions. Word has length 31 [2021-12-27 21:18:32,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 21:18:32,351 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 58 transitions. [2021-12-27 21:18:32,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 21:18:32,352 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2021-12-27 21:18:32,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-27 21:18:32,352 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 21:18:32,352 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 21:18:32,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-27 21:18:32,353 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 21:18:32,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 21:18:32,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1327947132, now seen corresponding path program 1 times [2021-12-27 21:18:32,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 21:18:32,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463490427] [2021-12-27 21:18:32,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 21:18:32,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 21:18:32,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 21:18:32,443 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-12-27 21:18:32,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 21:18:32,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463490427] [2021-12-27 21:18:32,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463490427] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-27 21:18:32,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543560543] [2021-12-27 21:18:32,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 21:18:32,444 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-27 21:18:32,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-27 21:18:32,448 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-27 21:18:32,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-27 21:18:32,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 21:18:32,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-27 21:18:32,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-27 21:18:32,645 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-27 21:18:32,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-27 21:18:32,771 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-27 21:18:32,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543560543] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-27 21:18:32,772 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-27 21:18:32,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2021-12-27 21:18:32,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775310929] [2021-12-27 21:18:32,772 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-27 21:18:32,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-27 21:18:32,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 21:18:32,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-27 21:18:32,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2021-12-27 21:18:32,774 INFO L87 Difference]: Start difference. First operand 48 states and 58 transitions. Second operand has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 21:18:32,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 21:18:32,959 INFO L93 Difference]: Finished difference Result 187 states and 243 transitions. [2021-12-27 21:18:32,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-27 21:18:32,960 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-12-27 21:18:32,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 21:18:32,961 INFO L225 Difference]: With dead ends: 187 [2021-12-27 21:18:32,961 INFO L226 Difference]: Without dead ends: 150 [2021-12-27 21:18:32,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=141, Unknown=0, NotChecked=0, Total=240 [2021-12-27 21:18:32,962 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 173 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-27 21:18:32,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 176 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-27 21:18:32,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-12-27 21:18:32,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 72. [2021-12-27 21:18:32,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 69 states have (on average 1.2028985507246377) internal successors, (83), 69 states have internal predecessors, (83), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-27 21:18:32,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 85 transitions. [2021-12-27 21:18:32,985 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 85 transitions. Word has length 33 [2021-12-27 21:18:32,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 21:18:32,985 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 85 transitions. [2021-12-27 21:18:32,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 21:18:32,986 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 85 transitions. [2021-12-27 21:18:32,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-27 21:18:32,989 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 21:18:32,989 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 21:18:33,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-27 21:18:33,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-27 21:18:33,208 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 21:18:33,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 21:18:33,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1439765920, now seen corresponding path program 1 times [2021-12-27 21:18:33,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 21:18:33,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120309917] [2021-12-27 21:18:33,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 21:18:33,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 21:18:33,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 21:18:33,299 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2021-12-27 21:18:33,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 21:18:33,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120309917] [2021-12-27 21:18:33,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120309917] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 21:18:33,299 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-27 21:18:33,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-27 21:18:33,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706467759] [2021-12-27 21:18:33,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 21:18:33,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-27 21:18:33,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 21:18:33,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-27 21:18:33,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-27 21:18:33,301 INFO L87 Difference]: Start difference. First operand 72 states and 85 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 21:18:33,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 21:18:33,318 INFO L93 Difference]: Finished difference Result 94 states and 112 transitions. [2021-12-27 21:18:33,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-27 21:18:33,318 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-12-27 21:18:33,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 21:18:33,319 INFO L225 Difference]: With dead ends: 94 [2021-12-27 21:18:33,319 INFO L226 Difference]: Without dead ends: 64 [2021-12-27 21:18:33,320 INFO L932 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 [2021-12-27 21:18:33,320 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 11 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-27 21:18:33,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 95 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-27 21:18:33,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-12-27 21:18:33,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-12-27 21:18:33,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 61 states have (on average 1.1475409836065573) internal successors, (70), 61 states have internal predecessors, (70), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-27 21:18:33,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 72 transitions. [2021-12-27 21:18:33,326 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 72 transitions. Word has length 53 [2021-12-27 21:18:33,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 21:18:33,327 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 72 transitions. [2021-12-27 21:18:33,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 21:18:33,327 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 72 transitions. [2021-12-27 21:18:33,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-27 21:18:33,327 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 21:18:33,328 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 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] [2021-12-27 21:18:33,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-27 21:18:33,328 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 21:18:33,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 21:18:33,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1385301982, now seen corresponding path program 2 times [2021-12-27 21:18:33,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 21:18:33,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592889391] [2021-12-27 21:18:33,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 21:18:33,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 21:18:33,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 21:18:33,468 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-27 21:18:33,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 21:18:33,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592889391] [2021-12-27 21:18:33,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592889391] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-27 21:18:33,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877565879] [2021-12-27 21:18:33,469 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-27 21:18:33,469 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-27 21:18:33,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-27 21:18:33,470 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-27 21:18:33,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-27 21:18:33,576 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-27 21:18:33,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-27 21:18:33,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-27 21:18:33,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-27 21:18:33,683 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-27 21:18:33,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-27 21:18:33,941 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-27 21:18:33,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877565879] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-27 21:18:33,942 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-27 21:18:33,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2021-12-27 21:18:33,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678761365] [2021-12-27 21:18:33,943 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-27 21:18:33,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-27 21:18:33,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 21:18:33,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-27 21:18:33,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2021-12-27 21:18:33,945 INFO L87 Difference]: Start difference. First operand 64 states and 72 transitions. Second operand has 25 states, 25 states have (on average 2.76) internal successors, (69), 25 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 21:18:34,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 21:18:34,179 INFO L93 Difference]: Finished difference Result 261 states and 332 transitions. [2021-12-27 21:18:34,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-27 21:18:34,180 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.76) internal successors, (69), 25 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-12-27 21:18:34,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 21:18:34,181 INFO L225 Difference]: With dead ends: 261 [2021-12-27 21:18:34,181 INFO L226 Difference]: Without dead ends: 220 [2021-12-27 21:18:34,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2021-12-27 21:18:34,182 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 268 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-27 21:18:34,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 187 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-27 21:18:34,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-12-27 21:18:34,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 88. [2021-12-27 21:18:34,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 85 states have (on average 1.1058823529411765) internal successors, (94), 85 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-27 21:18:34,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 96 transitions. [2021-12-27 21:18:34,196 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 96 transitions. Word has length 54 [2021-12-27 21:18:34,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 21:18:34,196 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 96 transitions. [2021-12-27 21:18:34,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.76) internal successors, (69), 25 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 21:18:34,196 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 96 transitions. [2021-12-27 21:18:34,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-12-27 21:18:34,197 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 21:18:34,197 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 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] [2021-12-27 21:18:34,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-27 21:18:34,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-27 21:18:34,420 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 21:18:34,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 21:18:34,420 INFO L85 PathProgramCache]: Analyzing trace with hash 359833914, now seen corresponding path program 3 times [2021-12-27 21:18:34,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 21:18:34,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169941981] [2021-12-27 21:18:34,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 21:18:34,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 21:18:34,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 21:18:34,775 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-27 21:18:34,776 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 21:18:34,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169941981] [2021-12-27 21:18:34,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169941981] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-27 21:18:34,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954550178] [2021-12-27 21:18:34,776 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-27 21:18:34,776 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-27 21:18:34,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-27 21:18:34,779 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-27 21:18:34,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-27 21:18:34,867 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-27 21:18:34,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-27 21:18:34,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-27 21:18:34,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-27 21:18:35,004 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 493 trivial. 0 not checked. [2021-12-27 21:18:35,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-27 21:18:35,146 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 493 trivial. 0 not checked. [2021-12-27 21:18:35,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [954550178] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-27 21:18:35,146 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-27 21:18:35,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 5, 5] total 31 [2021-12-27 21:18:35,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205759782] [2021-12-27 21:18:35,147 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-27 21:18:35,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-12-27 21:18:35,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 21:18:35,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-12-27 21:18:35,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=603, Unknown=0, NotChecked=0, Total=930 [2021-12-27 21:18:35,152 INFO L87 Difference]: Start difference. First operand 88 states and 96 transitions. Second operand has 31 states, 31 states have (on average 2.774193548387097) internal successors, (86), 31 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 21:18:35,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 21:18:35,482 INFO L93 Difference]: Finished difference Result 314 states and 392 transitions. [2021-12-27 21:18:35,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-27 21:18:35,483 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.774193548387097) internal successors, (86), 31 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-12-27 21:18:35,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 21:18:35,484 INFO L225 Difference]: With dead ends: 314 [2021-12-27 21:18:35,484 INFO L226 Difference]: Without dead ends: 273 [2021-12-27 21:18:35,485 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=513, Invalid=819, Unknown=0, NotChecked=0, Total=1332 [2021-12-27 21:18:35,486 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 555 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 578 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-27 21:18:35,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [578 Valid, 379 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-27 21:18:35,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2021-12-27 21:18:35,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 134. [2021-12-27 21:18:35,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 131 states have (on average 1.1297709923664123) internal successors, (148), 131 states have internal predecessors, (148), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-27 21:18:35,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 150 transitions. [2021-12-27 21:18:35,501 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 150 transitions. Word has length 78 [2021-12-27 21:18:35,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 21:18:35,501 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 150 transitions. [2021-12-27 21:18:35,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.774193548387097) internal successors, (86), 31 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 21:18:35,501 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 150 transitions. [2021-12-27 21:18:35,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-12-27 21:18:35,502 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 21:18:35,502 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 21:18:35,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-27 21:18:35,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-27 21:18:35,723 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 21:18:35,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 21:18:35,724 INFO L85 PathProgramCache]: Analyzing trace with hash 140841668, now seen corresponding path program 4 times [2021-12-27 21:18:35,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 21:18:35,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166804633] [2021-12-27 21:18:35,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 21:18:35,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 21:18:35,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 21:18:36,088 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-12-27 21:18:36,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 21:18:36,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166804633] [2021-12-27 21:18:36,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166804633] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-27 21:18:36,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392020682] [2021-12-27 21:18:36,089 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-27 21:18:36,089 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-27 21:18:36,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-27 21:18:36,090 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-27 21:18:36,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-27 21:18:36,264 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-27 21:18:36,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-27 21:18:36,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 25 conjunts are in the unsatisfiable core [2021-12-27 21:18:36,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-27 21:18:36,458 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-12-27 21:18:36,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-27 21:18:37,316 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-12-27 21:18:37,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392020682] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-27 21:18:37,316 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-27 21:18:37,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 51 [2021-12-27 21:18:37,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56241152] [2021-12-27 21:18:37,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-27 21:18:37,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2021-12-27 21:18:37,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 21:18:37,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-12-27 21:18:37,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2021-12-27 21:18:37,319 INFO L87 Difference]: Start difference. First operand 134 states and 150 transitions. Second operand has 51 states, 51 states have (on average 2.372549019607843) internal successors, (121), 51 states have internal predecessors, (121), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 21:18:37,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 21:18:37,956 INFO L93 Difference]: Finished difference Result 557 states and 709 transitions. [2021-12-27 21:18:37,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-12-27 21:18:37,957 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.372549019607843) internal successors, (121), 51 states have internal predecessors, (121), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2021-12-27 21:18:37,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 21:18:37,959 INFO L225 Difference]: With dead ends: 557 [2021-12-27 21:18:37,959 INFO L226 Difference]: Without dead ends: 472 [2021-12-27 21:18:37,961 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2021-12-27 21:18:37,961 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 764 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 812 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-27 21:18:37,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [812 Valid, 317 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [308 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-27 21:18:37,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2021-12-27 21:18:37,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 184. [2021-12-27 21:18:37,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 181 states have (on average 1.0939226519337018) internal successors, (198), 181 states have internal predecessors, (198), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-27 21:18:37,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 200 transitions. [2021-12-27 21:18:37,978 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 200 transitions. Word has length 116 [2021-12-27 21:18:37,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 21:18:37,979 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 200 transitions. [2021-12-27 21:18:37,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.372549019607843) internal successors, (121), 51 states have internal predecessors, (121), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 21:18:37,979 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 200 transitions. [2021-12-27 21:18:37,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-12-27 21:18:37,980 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 21:18:37,981 INFO L514 BasicCegarLoop]: trace histogram [48, 48, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 21:18:38,002 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-27 21:18:38,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-27 21:18:38,200 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 21:18:38,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 21:18:38,200 INFO L85 PathProgramCache]: Analyzing trace with hash 2022982902, now seen corresponding path program 5 times [2021-12-27 21:18:38,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 21:18:38,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516040450] [2021-12-27 21:18:38,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 21:18:38,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 21:18:38,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 21:18:39,252 INFO L134 CoverageAnalysis]: Checked inductivity of 2451 backedges. 0 proven. 2304 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-12-27 21:18:39,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 21:18:39,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516040450] [2021-12-27 21:18:39,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516040450] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-27 21:18:39,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352082212] [2021-12-27 21:18:39,253 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-27 21:18:39,253 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-27 21:18:39,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-27 21:18:39,255 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-27 21:18:39,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process