./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ef118c-28cb-4b15-868b-1b6fff4250b3/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ef118c-28cb-4b15-868b-1b6fff4250b3/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ef118c-28cb-4b15-868b-1b6fff4250b3/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ef118c-28cb-4b15-868b-1b6fff4250b3/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ef118c-28cb-4b15-868b-1b6fff4250b3/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ef118c-28cb-4b15-868b-1b6fff4250b3/bin/uautomizer-w2VwFs6gM0 --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 1870b8451d4735c7264ac4337bbb2c1eeecb277125949d2d6e57edbf68a24fac --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 16:03:39,033 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 16:03:39,036 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 16:03:39,103 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 16:03:39,104 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 16:03:39,109 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 16:03:39,111 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 16:03:39,115 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 16:03:39,118 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 16:03:39,125 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 16:03:39,126 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 16:03:39,128 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 16:03:39,128 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 16:03:39,129 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 16:03:39,131 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 16:03:39,132 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 16:03:39,133 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 16:03:39,135 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 16:03:39,139 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 16:03:39,150 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 16:03:39,152 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 16:03:39,154 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 16:03:39,159 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 16:03:39,160 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 16:03:39,164 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 16:03:39,165 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 16:03:39,165 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 16:03:39,167 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 16:03:39,168 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 16:03:39,170 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 16:03:39,170 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 16:03:39,171 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 16:03:39,173 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 16:03:39,174 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 16:03:39,176 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 16:03:39,176 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 16:03:39,177 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 16:03:39,177 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 16:03:39,178 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 16:03:39,179 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 16:03:39,179 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 16:03:39,180 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ef118c-28cb-4b15-868b-1b6fff4250b3/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-22 16:03:39,225 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 16:03:39,225 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 16:03:39,226 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 16:03:39,226 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 16:03:39,234 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 16:03:39,235 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 16:03:39,235 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 16:03:39,235 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 16:03:39,235 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 16:03:39,235 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 16:03:39,237 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 16:03:39,237 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 16:03:39,237 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 16:03:39,237 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 16:03:39,237 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 16:03:39,238 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 16:03:39,238 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 16:03:39,238 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 16:03:39,238 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 16:03:39,238 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 16:03:39,239 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 16:03:39,239 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 16:03:39,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 16:03:39,239 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 16:03:39,239 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 16:03:39,240 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 16:03:39,240 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 16:03:39,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 16:03:39,240 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 16:03:39,242 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 16:03:39,242 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 16:03:39,242 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 16:03:39,242 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ef118c-28cb-4b15-868b-1b6fff4250b3/bin/uautomizer-w2VwFs6gM0/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ef118c-28cb-4b15-868b-1b6fff4250b3/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1870b8451d4735c7264ac4337bbb2c1eeecb277125949d2d6e57edbf68a24fac [2021-11-22 16:03:39,502 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 16:03:39,528 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 16:03:39,532 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 16:03:39,533 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 16:03:39,534 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 16:03:39,535 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ef118c-28cb-4b15-868b-1b6fff4250b3/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound1.c [2021-11-22 16:03:39,622 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ef118c-28cb-4b15-868b-1b6fff4250b3/bin/uautomizer-w2VwFs6gM0/data/2d66acef6/882e5b44f4be44bb8f1fd2b2262a65e3/FLAG0e2dd1007 [2021-11-22 16:03:40,036 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 16:03:40,036 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ef118c-28cb-4b15-868b-1b6fff4250b3/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound1.c [2021-11-22 16:03:40,042 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ef118c-28cb-4b15-868b-1b6fff4250b3/bin/uautomizer-w2VwFs6gM0/data/2d66acef6/882e5b44f4be44bb8f1fd2b2262a65e3/FLAG0e2dd1007 [2021-11-22 16:03:40,476 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ef118c-28cb-4b15-868b-1b6fff4250b3/bin/uautomizer-w2VwFs6gM0/data/2d66acef6/882e5b44f4be44bb8f1fd2b2262a65e3 [2021-11-22 16:03:40,478 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 16:03:40,479 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 16:03:40,480 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 16:03:40,481 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 16:03:40,501 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 16:03:40,502 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 04:03:40" (1/1) ... [2021-11-22 16:03:40,503 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@561183c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:40, skipping insertion in model container [2021-11-22 16:03:40,503 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 04:03:40" (1/1) ... [2021-11-22 16:03:40,510 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 16:03:40,530 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 16:03:40,689 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ef118c-28cb-4b15-868b-1b6fff4250b3/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound1.c[520,533] [2021-11-22 16:03:40,704 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 16:03:40,711 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 16:03:40,722 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ef118c-28cb-4b15-868b-1b6fff4250b3/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound1.c[520,533] [2021-11-22 16:03:40,729 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 16:03:40,743 INFO L208 MainTranslator]: Completed translation [2021-11-22 16:03:40,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:40 WrapperNode [2021-11-22 16:03:40,744 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 16:03:40,745 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 16:03:40,745 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 16:03:40,745 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 16:03:40,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:40" (1/1) ... [2021-11-22 16:03:40,760 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:40" (1/1) ... [2021-11-22 16:03:40,781 INFO L137 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 72 [2021-11-22 16:03:40,781 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 16:03:40,782 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 16:03:40,782 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 16:03:40,782 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 16:03:40,790 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:40" (1/1) ... [2021-11-22 16:03:40,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:40" (1/1) ... [2021-11-22 16:03:40,792 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:40" (1/1) ... [2021-11-22 16:03:40,793 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:40" (1/1) ... [2021-11-22 16:03:40,797 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:40" (1/1) ... [2021-11-22 16:03:40,801 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:40" (1/1) ... [2021-11-22 16:03:40,803 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:40" (1/1) ... [2021-11-22 16:03:40,805 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 16:03:40,806 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 16:03:40,806 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 16:03:40,806 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 16:03:40,807 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:40" (1/1) ... [2021-11-22 16:03:40,815 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 16:03:40,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ef118c-28cb-4b15-868b-1b6fff4250b3/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:03:40,840 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ef118c-28cb-4b15-868b-1b6fff4250b3/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 16:03:40,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ef118c-28cb-4b15-868b-1b6fff4250b3/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 16:03:40,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 16:03:40,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 16:03:40,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 16:03:40,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 16:03:40,967 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 16:03:40,968 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 16:03:41,162 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 16:03:41,169 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 16:03:41,169 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-22 16:03:41,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 04:03:41 BoogieIcfgContainer [2021-11-22 16:03:41,171 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 16:03:41,172 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 16:03:41,172 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 16:03:41,178 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 16:03:41,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 04:03:40" (1/3) ... [2021-11-22 16:03:41,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67179fc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 04:03:41, skipping insertion in model container [2021-11-22 16:03:41,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:03:40" (2/3) ... [2021-11-22 16:03:41,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67179fc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 04:03:41, skipping insertion in model container [2021-11-22 16:03:41,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 04:03:41" (3/3) ... [2021-11-22 16:03:41,186 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt1-ll_unwindbound1.c [2021-11-22 16:03:41,192 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 16:03:41,192 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-22 16:03:41,267 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 16:03:41,278 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 [2021-11-22 16:03:41,279 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-22 16:03:41,298 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 26 states have (on average 1.5769230769230769) internal successors, (41), 32 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:41,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-22 16:03:41,318 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:03:41,318 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-22 16:03:41,319 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 16:03:41,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:03:41,325 INFO L85 PathProgramCache]: Analyzing trace with hash 890953575, now seen corresponding path program 1 times [2021-11-22 16:03:41,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:03:41,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65270730] [2021-11-22 16:03:41,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:03:41,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:03:41,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:03:41,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:03:41,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:03:41,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65270730] [2021-11-22 16:03:41,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65270730] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:03:41,511 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:03:41,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 16:03:41,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485851853] [2021-11-22 16:03:41,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:03:41,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-22 16:03:41,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:03:41,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-22 16:03:41,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 16:03:41,559 INFO L87 Difference]: Start difference. First operand has 33 states, 26 states have (on average 1.5769230769230769) internal successors, (41), 32 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:41,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:03:41,586 INFO L93 Difference]: Finished difference Result 64 states and 80 transitions. [2021-11-22 16:03:41,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 16:03:41,589 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-22 16:03:41,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:03:41,597 INFO L225 Difference]: With dead ends: 64 [2021-11-22 16:03:41,598 INFO L226 Difference]: Without dead ends: 29 [2021-11-22 16:03:41,601 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 16:03:41,607 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:03:41,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:03:41,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-22 16:03:41,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-11-22 16:03:41,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 28 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:41,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2021-11-22 16:03:41,663 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 6 [2021-11-22 16:03:41,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:03:41,663 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2021-11-22 16:03:41,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:41,664 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2021-11-22 16:03:41,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-22 16:03:41,665 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:03:41,665 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-22 16:03:41,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 16:03:41,667 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 16:03:41,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:03:41,671 INFO L85 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2021-11-22 16:03:41,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:03:41,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452934658] [2021-11-22 16:03:41,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:03:41,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:03:41,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:03:41,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:03:41,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:03:41,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452934658] [2021-11-22 16:03:41,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452934658] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:03:41,834 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:03:41,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 16:03:41,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018634820] [2021-11-22 16:03:41,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:03:41,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:03:41,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:03:41,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:03:41,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:03:41,840 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:41,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:03:41,965 INFO L93 Difference]: Finished difference Result 57 states and 59 transitions. [2021-11-22 16:03:41,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 16:03:41,966 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-22 16:03:41,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:03:41,967 INFO L225 Difference]: With dead ends: 57 [2021-11-22 16:03:41,967 INFO L226 Difference]: Without dead ends: 53 [2021-11-22 16:03:41,968 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 [2021-11-22 16:03:41,970 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 27 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:03:41,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 56 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:03:41,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-11-22 16:03:41,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 40. [2021-11-22 16:03:41,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 39 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:41,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2021-11-22 16:03:41,981 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 6 [2021-11-22 16:03:41,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:03:41,982 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2021-11-22 16:03:41,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:41,983 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2021-11-22 16:03:41,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-22 16:03:41,983 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:03:41,984 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:03:41,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 16:03:41,984 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 16:03:41,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:03:41,985 INFO L85 PathProgramCache]: Analyzing trace with hash 179657965, now seen corresponding path program 1 times [2021-11-22 16:03:41,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:03:41,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3669663] [2021-11-22 16:03:41,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:03:41,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:03:41,998 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 16:03:41,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1474975670] [2021-11-22 16:03:41,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:03:41,999 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:03:42,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ef118c-28cb-4b15-868b-1b6fff4250b3/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:03:42,001 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ef118c-28cb-4b15-868b-1b6fff4250b3/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 16:03:42,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ef118c-28cb-4b15-868b-1b6fff4250b3/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-22 16:03:42,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:03:42,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-22 16:03:42,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:03:42,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:03:42,173 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 16:03:42,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:03:42,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3669663] [2021-11-22 16:03:42,182 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 16:03:42,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474975670] [2021-11-22 16:03:42,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474975670] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:03:42,182 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:03:42,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 16:03:42,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307070668] [2021-11-22 16:03:42,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:03:42,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:03:42,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:03:42,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:03:42,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:03:42,185 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:42,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:03:42,270 INFO L93 Difference]: Finished difference Result 52 states and 54 transitions. [2021-11-22 16:03:42,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:03:42,271 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-22 16:03:42,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:03:42,272 INFO L225 Difference]: With dead ends: 52 [2021-11-22 16:03:42,272 INFO L226 Difference]: Without dead ends: 48 [2021-11-22 16:03:42,273 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:03:42,274 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 16 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:03:42,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 52 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:03:42,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-11-22 16:03:42,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2021-11-22 16:03:42,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 36 states have (on average 1.2777777777777777) internal successors, (46), 41 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:42,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2021-11-22 16:03:42,284 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 8 [2021-11-22 16:03:42,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:03:42,284 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2021-11-22 16:03:42,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:42,285 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2021-11-22 16:03:42,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-22 16:03:42,285 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:03:42,285 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:03:42,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ef118c-28cb-4b15-868b-1b6fff4250b3/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-22 16:03:42,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ef118c-28cb-4b15-868b-1b6fff4250b3/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:03:42,507 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 16:03:42,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:03:42,508 INFO L85 PathProgramCache]: Analyzing trace with hash 852768432, now seen corresponding path program 1 times [2021-11-22 16:03:42,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:03:42,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531412668] [2021-11-22 16:03:42,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:03:42,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:03:42,519 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 16:03:42,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1742159182] [2021-11-22 16:03:42,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:03:42,520 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:03:42,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ef118c-28cb-4b15-868b-1b6fff4250b3/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:03:42,521 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ef118c-28cb-4b15-868b-1b6fff4250b3/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 16:03:42,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ef118c-28cb-4b15-868b-1b6fff4250b3/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-22 16:03:42,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:03:42,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-22 16:03:42,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:03:42,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:03:42,774 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 16:03:42,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:03:42,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531412668] [2021-11-22 16:03:42,775 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 16:03:42,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742159182] [2021-11-22 16:03:42,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742159182] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:03:42,775 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:03:42,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 16:03:42,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187186402] [2021-11-22 16:03:42,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:03:42,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:03:42,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:03:42,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:03:42,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:03:42,781 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:42,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:03:42,847 INFO L93 Difference]: Finished difference Result 52 states and 55 transitions. [2021-11-22 16:03:42,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 16:03:42,848 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-22 16:03:42,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:03:42,849 INFO L225 Difference]: With dead ends: 52 [2021-11-22 16:03:42,849 INFO L226 Difference]: Without dead ends: 41 [2021-11-22 16:03:42,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:03:42,852 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 15 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:03:42,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 58 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:03:42,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-11-22 16:03:42,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2021-11-22 16:03:42,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 32 states have (on average 1.21875) internal successors, (39), 37 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:42,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2021-11-22 16:03:42,861 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 10 [2021-11-22 16:03:42,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:03:42,861 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2021-11-22 16:03:42,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:42,862 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2021-11-22 16:03:42,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-22 16:03:42,863 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:03:42,863 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:03:42,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ef118c-28cb-4b15-868b-1b6fff4250b3/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-22 16:03:43,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ef118c-28cb-4b15-868b-1b6fff4250b3/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:03:43,084 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 16:03:43,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:03:43,085 INFO L85 PathProgramCache]: Analyzing trace with hash -650991608, now seen corresponding path program 1 times [2021-11-22 16:03:43,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:03:43,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885061543] [2021-11-22 16:03:43,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:03:43,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:03:43,094 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 16:03:43,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2013140391] [2021-11-22 16:03:43,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:03:43,095 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:03:43,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ef118c-28cb-4b15-868b-1b6fff4250b3/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:03:43,096 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ef118c-28cb-4b15-868b-1b6fff4250b3/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 16:03:43,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ef118c-28cb-4b15-868b-1b6fff4250b3/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-22 16:03:43,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:03:43,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-22 16:03:43,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:03:43,192 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:03:43,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:03:43,257 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:03:43,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:03:43,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885061543] [2021-11-22 16:03:43,257 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 16:03:43,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013140391] [2021-11-22 16:03:43,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013140391] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 16:03:43,258 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-22 16:03:43,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-11-22 16:03:43,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787297141] [2021-11-22 16:03:43,258 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-22 16:03:43,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 16:03:43,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:03:43,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 16:03:43,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:03:43,260 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:43,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:03:43,301 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2021-11-22 16:03:43,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 16:03:43,305 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-22 16:03:43,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:03:43,306 INFO L225 Difference]: With dead ends: 52 [2021-11-22 16:03:43,306 INFO L226 Difference]: Without dead ends: 25 [2021-11-22 16:03:43,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-22 16:03:43,308 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 30 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:03:43,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 41 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:03:43,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-11-22 16:03:43,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-11-22 16:03:43,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 24 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:43,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 24 transitions. [2021-11-22 16:03:43,314 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 24 transitions. Word has length 15 [2021-11-22 16:03:43,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:03:43,314 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 24 transitions. [2021-11-22 16:03:43,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:43,315 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 24 transitions. [2021-11-22 16:03:43,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-22 16:03:43,315 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:03:43,315 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:03:43,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ef118c-28cb-4b15-868b-1b6fff4250b3/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-22 16:03:43,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ef118c-28cb-4b15-868b-1b6fff4250b3/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:03:43,516 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 16:03:43,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:03:43,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1294075828, now seen corresponding path program 1 times [2021-11-22 16:03:43,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:03:43,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094173641] [2021-11-22 16:03:43,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:03:43,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:03:43,528 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 16:03:43,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1926005989] [2021-11-22 16:03:43,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:03:43,528 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:03:43,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ef118c-28cb-4b15-868b-1b6fff4250b3/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:03:43,529 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ef118c-28cb-4b15-868b-1b6fff4250b3/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 16:03:43,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ef118c-28cb-4b15-868b-1b6fff4250b3/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-22 16:03:43,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:03:43,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-22 16:03:43,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:03:43,805 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:03:43,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:03:43,902 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 16:03:43,903 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:03:43,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094173641] [2021-11-22 16:03:43,903 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 16:03:43,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926005989] [2021-11-22 16:03:43,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926005989] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-22 16:03:43,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-22 16:03:43,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2021-11-22 16:03:43,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679924410] [2021-11-22 16:03:43,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:03:43,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:03:43,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:03:43,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:03:43,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-22 16:03:43,909 INFO L87 Difference]: Start difference. First operand 25 states and 24 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:43,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:03:43,982 INFO L93 Difference]: Finished difference Result 25 states and 24 transitions. [2021-11-22 16:03:43,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:03:43,983 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-22 16:03:43,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:03:43,984 INFO L225 Difference]: With dead ends: 25 [2021-11-22 16:03:43,984 INFO L226 Difference]: Without dead ends: 23 [2021-11-22 16:03:43,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-22 16:03:43,985 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 10 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:03:43,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 20 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:03:43,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-22 16:03:43,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-11-22 16:03:43,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 22 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:43,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2021-11-22 16:03:43,990 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 16 [2021-11-22 16:03:43,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:03:43,991 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2021-11-22 16:03:43,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:43,991 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2021-11-22 16:03:43,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-22 16:03:43,992 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:03:43,992 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:03:44,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ef118c-28cb-4b15-868b-1b6fff4250b3/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-22 16:03:44,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ef118c-28cb-4b15-868b-1b6fff4250b3/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-22 16:03:44,205 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 16:03:44,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:03:44,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1933488233, now seen corresponding path program 1 times [2021-11-22 16:03:44,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:03:44,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102386679] [2021-11-22 16:03:44,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:03:44,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:03:44,215 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 16:03:44,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1839367182] [2021-11-22 16:03:44,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:03:44,215 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:03:44,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ef118c-28cb-4b15-868b-1b6fff4250b3/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:03:44,216 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ef118c-28cb-4b15-868b-1b6fff4250b3/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 16:03:44,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ef118c-28cb-4b15-868b-1b6fff4250b3/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-22 16:03:44,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:03:44,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-22 16:03:44,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:03:44,414 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:03:44,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:03:44,522 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:03:44,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:03:44,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102386679] [2021-11-22 16:03:44,522 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 16:03:44,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839367182] [2021-11-22 16:03:44,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839367182] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 16:03:44,523 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-22 16:03:44,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-11-22 16:03:44,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395606490] [2021-11-22 16:03:44,526 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-22 16:03:44,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 16:03:44,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:03:44,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 16:03:44,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-22 16:03:44,530 INFO L87 Difference]: Start difference. First operand 23 states and 22 transitions. Second operand has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:44,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:03:44,598 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2021-11-22 16:03:44,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 16:03:44,604 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-22 16:03:44,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:03:44,604 INFO L225 Difference]: With dead ends: 23 [2021-11-22 16:03:44,604 INFO L226 Difference]: Without dead ends: 0 [2021-11-22 16:03:44,605 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-22 16:03:44,605 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 18 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:03:44,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 16 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:03:44,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-22 16:03:44,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-22 16:03:44,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:44,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-22 16:03:44,609 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2021-11-22 16:03:44,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:03:44,609 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-22 16:03:44,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:03:44,610 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-22 16:03:44,610 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-22 16:03:44,612 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2021-11-22 16:03:44,613 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2021-11-22 16:03:44,613 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2021-11-22 16:03:44,613 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2021-11-22 16:03:44,613 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2021-11-22 16:03:44,613 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2021-11-22 16:03:44,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ef118c-28cb-4b15-868b-1b6fff4250b3/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-22 16:03:44,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ef118c-28cb-4b15-868b-1b6fff4250b3/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:03:44,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-22 16:03:45,001 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-11-22 16:03:45,002 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-11-22 16:03:45,002 INFO L861 garLoopResultBuilder]: At program point L48(lines 21 49) the Hoare annotation is: true [2021-11-22 16:03:45,002 INFO L858 garLoopResultBuilder]: For program point L36(lines 36 37) no Hoare annotation was computed. [2021-11-22 16:03:45,002 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-22 16:03:45,003 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-11-22 16:03:45,003 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-22 16:03:45,003 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-22 16:03:45,003 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-11-22 16:03:45,003 INFO L858 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2021-11-22 16:03:45,004 INFO L854 garLoopResultBuilder]: At program point L12-2(lines 11 17) the Hoare annotation is: (and (<= 1 |ULTIMATE.start___VERIFIER_assert_~cond#1|) (= |ULTIMATE.start_main_~t~0#1| 1) (<= 1 ~counter~0) (= 0 (* 2 |ULTIMATE.start_main_~a~0#1|)) (= |ULTIMATE.start_main_~s~0#1| 1)) [2021-11-22 16:03:45,004 INFO L858 garLoopResultBuilder]: For program point L12-3(lines 12 15) no Hoare annotation was computed. [2021-11-22 16:03:45,004 INFO L854 garLoopResultBuilder]: At program point L12-5(lines 11 17) the Hoare annotation is: (and (<= 1 |ULTIMATE.start___VERIFIER_assert_~cond#1|) (= |ULTIMATE.start_main_~t~0#1| 1) (<= 1 ~counter~0) (= 0 (* 2 |ULTIMATE.start_main_~a~0#1|)) (= |ULTIMATE.start_main_~s~0#1| 1)) [2021-11-22 16:03:45,004 INFO L858 garLoopResultBuilder]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2021-11-22 16:03:45,004 INFO L854 garLoopResultBuilder]: At program point L12-8(lines 11 17) the Hoare annotation is: (and (<= 1 |ULTIMATE.start___VERIFIER_assert_~cond#1|) (= |ULTIMATE.start_main_~t~0#1| 1) (<= 1 ~counter~0) (= 0 (* 2 |ULTIMATE.start_main_~a~0#1|)) (= |ULTIMATE.start_main_~s~0#1| 1)) [2021-11-22 16:03:45,004 INFO L858 garLoopResultBuilder]: For program point L12-9(lines 12 15) no Hoare annotation was computed. [2021-11-22 16:03:45,005 INFO L854 garLoopResultBuilder]: At program point L12-11(lines 11 17) the Hoare annotation is: (or (and (= |ULTIMATE.start_main_~t~0#1| (+ 1 (* 2 |ULTIMATE.start_main_~a~0#1|))) (<= 1 |ULTIMATE.start___VERIFIER_assert_~cond#1|) (= |ULTIMATE.start_main_~a~0#1| 1) (<= 1 ~counter~0) (= |ULTIMATE.start_main_~s~0#1| 4)) (and (= |ULTIMATE.start_main_~t~0#1| 1) (not (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0)) (= |ULTIMATE.start_main_~a~0#1| 0) (= |ULTIMATE.start_main_~s~0#1| 1))) [2021-11-22 16:03:45,005 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-22 16:03:45,005 INFO L858 garLoopResultBuilder]: For program point L12-12(lines 12 15) no Hoare annotation was computed. [2021-11-22 16:03:45,005 INFO L854 garLoopResultBuilder]: At program point L12-14(lines 11 17) the Hoare annotation is: (or (and (= |ULTIMATE.start_main_~t~0#1| (+ 1 (* 2 |ULTIMATE.start_main_~a~0#1|))) (<= 1 |ULTIMATE.start___VERIFIER_assert_~cond#1|) (= |ULTIMATE.start_main_~a~0#1| 1) (<= 1 ~counter~0) (= |ULTIMATE.start_main_~s~0#1| 4)) (and (= |ULTIMATE.start_main_~t~0#1| 1) (not (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0)) (= |ULTIMATE.start_main_~s~0#1| 1))) [2021-11-22 16:03:45,005 INFO L858 garLoopResultBuilder]: For program point L12-15(lines 12 15) no Hoare annotation was computed. [2021-11-22 16:03:45,006 INFO L861 garLoopResultBuilder]: At program point L12-17(lines 11 17) the Hoare annotation is: true [2021-11-22 16:03:45,006 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-11-22 16:03:45,006 INFO L858 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2021-11-22 16:03:45,006 INFO L858 garLoopResultBuilder]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2021-11-22 16:03:45,006 INFO L858 garLoopResultBuilder]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2021-11-22 16:03:45,006 INFO L858 garLoopResultBuilder]: For program point L13-3(lines 13 14) no Hoare annotation was computed. [2021-11-22 16:03:45,007 INFO L858 garLoopResultBuilder]: For program point L13-4(lines 13 14) no Hoare annotation was computed. [2021-11-22 16:03:45,007 INFO L858 garLoopResultBuilder]: For program point L13-5(lines 13 14) no Hoare annotation was computed. [2021-11-22 16:03:45,007 INFO L858 garLoopResultBuilder]: For program point L30-1(lines 30 42) no Hoare annotation was computed. [2021-11-22 16:03:45,007 INFO L854 garLoopResultBuilder]: At program point L30-3(lines 30 42) the Hoare annotation is: (let ((.cse0 (* 2 |ULTIMATE.start_main_~a~0#1|))) (or (and (= |ULTIMATE.start_main_~t~0#1| (+ 1 .cse0)) (<= 1 |ULTIMATE.start___VERIFIER_assert_~cond#1|) (= |ULTIMATE.start_main_~a~0#1| 1) (<= 1 ~counter~0) (= |ULTIMATE.start_main_~s~0#1| 4)) (and (<= 0 ~counter~0) (= |ULTIMATE.start_main_~t~0#1| 1) (= 0 .cse0) (= |ULTIMATE.start_main_~s~0#1| 1)))) [2021-11-22 16:03:45,007 INFO L858 garLoopResultBuilder]: For program point L30-4(lines 30 42) no Hoare annotation was computed. [2021-11-22 16:03:45,008 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-11-22 16:03:45,011 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:03:45,013 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-22 16:03:45,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 04:03:45 BoogieIcfgContainer [2021-11-22 16:03:45,030 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-22 16:03:45,031 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-22 16:03:45,031 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-22 16:03:45,031 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-22 16:03:45,031 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 04:03:41" (3/4) ... [2021-11-22 16:03:45,035 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-22 16:03:45,045 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-11-22 16:03:45,046 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-22 16:03:45,046 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-22 16:03:45,046 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-22 16:03:45,086 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ef118c-28cb-4b15-868b-1b6fff4250b3/bin/uautomizer-w2VwFs6gM0/witness.graphml [2021-11-22 16:03:45,086 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-22 16:03:45,087 INFO L158 Benchmark]: Toolchain (without parser) took 4607.74ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 55.0MB in the beginning and 87.7MB in the end (delta: -32.7MB). Peak memory consumption was 43.3MB. Max. memory is 16.1GB. [2021-11-22 16:03:45,087 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 92.3MB. Free memory was 71.8MB in the beginning and 71.8MB in the end (delta: 46.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 16:03:45,088 INFO L158 Benchmark]: CACSL2BoogieTranslator took 263.76ms. Allocated memory is still 92.3MB. Free memory was 54.7MB in the beginning and 66.9MB in the end (delta: -12.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-22 16:03:45,088 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.51ms. Allocated memory is still 92.3MB. Free memory was 66.9MB in the beginning and 65.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 16:03:45,088 INFO L158 Benchmark]: Boogie Preprocessor took 22.96ms. Allocated memory is still 92.3MB. Free memory was 65.2MB in the beginning and 64.3MB in the end (delta: 921.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-22 16:03:45,089 INFO L158 Benchmark]: RCFGBuilder took 365.51ms. Allocated memory is still 92.3MB. Free memory was 64.3MB in the beginning and 54.5MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-22 16:03:45,089 INFO L158 Benchmark]: TraceAbstraction took 3857.69ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 54.1MB in the beginning and 34.3MB in the end (delta: 19.8MB). Peak memory consumption was 37.3MB. Max. memory is 16.1GB. [2021-11-22 16:03:45,090 INFO L158 Benchmark]: Witness Printer took 55.71ms. Allocated memory is still 111.1MB. Free memory was 34.3MB in the beginning and 87.7MB in the end (delta: -53.3MB). Peak memory consumption was 6.2MB. Max. memory is 16.1GB. [2021-11-22 16:03:45,092 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 92.3MB. Free memory was 71.8MB in the beginning and 71.8MB in the end (delta: 46.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 263.76ms. Allocated memory is still 92.3MB. Free memory was 54.7MB in the beginning and 66.9MB in the end (delta: -12.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.51ms. Allocated memory is still 92.3MB. Free memory was 66.9MB in the beginning and 65.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 22.96ms. Allocated memory is still 92.3MB. Free memory was 65.2MB in the beginning and 64.3MB in the end (delta: 921.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 365.51ms. Allocated memory is still 92.3MB. Free memory was 64.3MB in the beginning and 54.5MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 3857.69ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 54.1MB in the beginning and 34.3MB in the end (delta: 19.8MB). Peak memory consumption was 37.3MB. Max. memory is 16.1GB. * Witness Printer took 55.71ms. Allocated memory is still 111.1MB. Free memory was 34.3MB in the beginning and 87.7MB in the end (delta: -53.3MB). Peak memory consumption was 6.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 3.8s, OverallIterations: 7, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 116 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 116 mSDsluCounter, 277 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 136 mSDsCounter, 45 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 155 IncrementalHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 45 mSolverCounterUnsat, 141 mSDtfsCounter, 155 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 121 GetRequests, 94 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=3, InterpolantAutomatonStates: 30, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 22 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 19 NumberOfFragments, 159 HoareAnnotationTreeSize, 8 FomulaSimplifications, 169 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 76 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 79 NumberOfCodeBlocks, 79 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 118 ConstructedInterpolants, 0 QuantifiedInterpolants, 664 SizeOfPredicates, 14 NumberOfNonLiveVariables, 339 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 10 InterpolantComputations, 5 PerfectInterpolantSequences, 6/14 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((1 <= cond && t == 1) && 1 <= counter) && 0 == 2 * a) && s == 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((1 <= cond && t == 1) && 1 <= counter) && 0 == 2 * a) && s == 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((((t == 1 + 2 * a && 1 <= cond) && a == 1) && 1 <= counter) && s == 4) || (((t == 1 && !(cond == 0)) && a == 0) && s == 1) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((((t == 1 + 2 * a && 1 <= cond) && a == 1) && 1 <= counter) && s == 4) || ((t == 1 && !(cond == 0)) && s == 1) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((1 <= cond && t == 1) && 1 <= counter) && 0 == 2 * a) && s == 1 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: ((((t == 1 + 2 * a && 1 <= cond) && a == 1) && 1 <= counter) && s == 4) || (((0 <= counter && t == 1) && 0 == 2 * a) && s == 1) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-11-22 16:03:45,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1ef118c-28cb-4b15-868b-1b6fff4250b3/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE