./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/bin/uautomizer-j4sWxH34Be --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 40c004ecbeb3948e318f4c5fc8011bd289b059bb9dbb2959c45853a9680cf20f ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 20:30:26,755 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:30:26,759 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:30:26,826 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:30:26,827 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:30:26,831 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:30:26,833 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:30:26,838 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:30:26,841 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:30:26,848 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:30:26,849 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:30:26,851 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:30:26,852 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:30:26,855 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:30:26,857 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:30:26,863 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:30:26,865 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:30:26,867 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:30:26,870 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:30:26,880 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:30:26,882 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:30:26,884 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:30:26,888 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:30:26,889 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:30:26,897 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:30:26,897 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:30:26,898 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:30:26,900 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:30:26,901 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:30:26,903 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:30:26,903 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:30:26,904 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:30:26,906 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:30:26,908 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:30:26,910 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:30:26,910 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:30:26,911 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:30:26,911 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:30:26,911 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:30:26,912 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:30:26,913 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:30:26,914 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 20:30:26,960 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:30:26,960 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:30:26,961 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:30:26,961 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:30:26,963 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:30:26,963 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:30:26,964 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:30:26,964 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:30:26,964 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:30:26,964 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 20:30:26,965 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:30:26,966 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:30:26,966 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 20:30:26,966 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 20:30:26,966 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 20:30:26,966 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:30:26,966 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 20:30:26,967 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:30:26,967 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 20:30:26,967 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:30:26,967 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:30:26,967 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 20:30:26,968 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:30:26,968 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:30:26,968 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 20:30:26,968 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 20:30:26,968 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 20:30:26,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 20:30:26,969 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 20:30:26,969 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 20:30:26,969 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 20:30:26,969 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:30:26,970 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_471aaf53-8990-4c2b-854d-5e93d2afa5d7/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 40c004ecbeb3948e318f4c5fc8011bd289b059bb9dbb2959c45853a9680cf20f [2021-10-21 20:30:27,322 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:30:27,361 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:30:27,364 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:30:27,365 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:30:27,366 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:30:27,368 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound1.c [2021-10-21 20:30:27,451 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/bin/uautomizer-j4sWxH34Be/data/e181e0780/5b81352687e3406384f154907a8ae980/FLAG1f6c6fe89 [2021-10-21 20:30:28,000 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:30:28,001 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound1.c [2021-10-21 20:30:28,019 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/bin/uautomizer-j4sWxH34Be/data/e181e0780/5b81352687e3406384f154907a8ae980/FLAG1f6c6fe89 [2021-10-21 20:30:28,367 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/bin/uautomizer-j4sWxH34Be/data/e181e0780/5b81352687e3406384f154907a8ae980 [2021-10-21 20:30:28,370 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:30:28,372 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 20:30:28,375 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:30:28,376 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:30:28,380 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:30:28,381 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:30:28" (1/1) ... [2021-10-21 20:30:28,382 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72d44d3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:30:28, skipping insertion in model container [2021-10-21 20:30:28,382 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:30:28" (1/1) ... [2021-10-21 20:30:28,390 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:30:28,409 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:30:28,614 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound1.c[490,503] [2021-10-21 20:30:28,637 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:30:28,649 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:30:28,661 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound1.c[490,503] [2021-10-21 20:30:28,675 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:30:28,689 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:30:28,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:30:28 WrapperNode [2021-10-21 20:30:28,690 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:30:28,692 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 20:30:28,692 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 20:30:28,692 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 20:30:28,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:30:28" (1/1) ... [2021-10-21 20:30:28,707 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:30:28" (1/1) ... [2021-10-21 20:30:28,734 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 20:30:28,735 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:30:28,735 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:30:28,735 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:30:28,745 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:30:28" (1/1) ... [2021-10-21 20:30:28,746 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:30:28" (1/1) ... [2021-10-21 20:30:28,748 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:30:28" (1/1) ... [2021-10-21 20:30:28,748 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:30:28" (1/1) ... [2021-10-21 20:30:28,754 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:30:28" (1/1) ... [2021-10-21 20:30:28,759 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:30:28" (1/1) ... [2021-10-21 20:30:28,761 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:30:28" (1/1) ... [2021-10-21 20:30:28,764 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:30:28,765 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:30:28,765 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:30:28,765 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:30:28,766 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:30:28" (1/1) ... [2021-10-21 20:30:28,775 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:30:28,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:30:28,816 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 20:30:28,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 20:30:28,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 20:30:28,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 20:30:28,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:30:28,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:30:29,157 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:30:29,158 INFO L299 CfgBuilder]: Removed 25 assume(true) statements. [2021-10-21 20:30:29,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:30:29 BoogieIcfgContainer [2021-10-21 20:30:29,160 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:30:29,162 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 20:30:29,162 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 20:30:29,184 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 20:30:29,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 08:30:28" (1/3) ... [2021-10-21 20:30:29,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73479b69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:30:29, skipping insertion in model container [2021-10-21 20:30:29,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:30:28" (2/3) ... [2021-10-21 20:30:29,186 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73479b69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:30:29, skipping insertion in model container [2021-10-21 20:30:29,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:30:29" (3/3) ... [2021-10-21 20:30:29,188 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd3-ll_valuebound1.c [2021-10-21 20:30:29,194 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 20:30:29,208 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-10-21 20:30:29,290 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 20:30:29,301 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 [2021-10-21 20:30:29,302 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-10-21 20:30:29,323 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 35 states have (on average 1.6571428571428573) internal successors, (58), 40 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:29,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-21 20:30:29,345 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:30:29,346 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:30:29,346 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 20:30:29,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:30:29,359 INFO L82 PathProgramCache]: Analyzing trace with hash -174497841, now seen corresponding path program 1 times [2021-10-21 20:30:29,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:30:29,398 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205090588] [2021-10-21 20:30:29,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:30:29,399 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:30:29,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:30:29,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:30:29,674 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:30:29,674 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205090588] [2021-10-21 20:30:29,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205090588] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:30:29,675 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:30:29,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 20:30:29,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753566776] [2021-10-21 20:30:29,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-21 20:30:29,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:30:29,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-21 20:30:29,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 20:30:29,715 INFO L87 Difference]: Start difference. First operand has 41 states, 35 states have (on average 1.6571428571428573) internal successors, (58), 40 states have internal predecessors, (58), 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 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:29,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:30:29,746 INFO L93 Difference]: Finished difference Result 79 states and 112 transitions. [2021-10-21 20:30:29,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-21 20:30:29,748 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-21 20:30:29,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:30:29,759 INFO L225 Difference]: With dead ends: 79 [2021-10-21 20:30:29,759 INFO L226 Difference]: Without dead ends: 37 [2021-10-21 20:30:29,764 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 20:30:29,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-10-21 20:30:29,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-10-21 20:30:29,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 32 states have (on average 1.21875) internal successors, (39), 36 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) [2021-10-21 20:30:29,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2021-10-21 20:30:29,818 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 14 [2021-10-21 20:30:29,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:30:29,820 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2021-10-21 20:30:29,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:29,822 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2021-10-21 20:30:29,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-21 20:30:29,824 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:30:29,824 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:30:29,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 20:30:29,825 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 20:30:29,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:30:29,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1454170515, now seen corresponding path program 1 times [2021-10-21 20:30:29,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:30:29,830 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476852635] [2021-10-21 20:30:29,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:30:29,830 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:30:29,875 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 20:30:29,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1494231378] [2021-10-21 20:30:29,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:30:29,877 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:30:29,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:30:29,882 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:30:29,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-21 20:30:29,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:30:29,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 20:30:30,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:30:30,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:30:30,289 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:30:30,289 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476852635] [2021-10-21 20:30:30,289 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:30:30,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494231378] [2021-10-21 20:30:30,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494231378] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:30:30,290 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:30:30,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 20:30:30,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362552809] [2021-10-21 20:30:30,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 20:30:30,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:30:30,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 20:30:30,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:30:30,294 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 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) [2021-10-21 20:30:30,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:30:30,462 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2021-10-21 20:30:30,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 20:30:30,463 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 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 [2021-10-21 20:30:30,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:30:30,464 INFO L225 Difference]: With dead ends: 64 [2021-10-21 20:30:30,465 INFO L226 Difference]: Without dead ends: 60 [2021-10-21 20:30:30,466 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 63.5ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:30:30,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-21 20:30:30,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 39. [2021-10-21 20:30:30,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 38 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) [2021-10-21 20:30:30,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2021-10-21 20:30:30,480 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 15 [2021-10-21 20:30:30,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:30:30,481 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2021-10-21 20:30:30,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 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) [2021-10-21 20:30:30,481 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2021-10-21 20:30:30,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-21 20:30:30,482 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:30:30,482 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:30:30,526 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-21 20:30:30,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:30:30,684 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 20:30:30,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:30:30,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1580206288, now seen corresponding path program 1 times [2021-10-21 20:30:30,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:30:30,685 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744888452] [2021-10-21 20:30:30,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:30:30,685 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:30:30,706 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 20:30:30,706 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [785835589] [2021-10-21 20:30:30,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:30:30,707 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:30:30,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:30:30,708 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:30:30,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-21 20:30:30,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:30:30,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-21 20:30:30,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:30:31,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:30:31,489 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:30:31,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744888452] [2021-10-21 20:30:31,489 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:30:31,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785835589] [2021-10-21 20:30:31,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785835589] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:30:31,490 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:30:31,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-21 20:30:31,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106817846] [2021-10-21 20:30:31,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-21 20:30:31,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:30:31,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-21 20:30:31,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-10-21 20:30:31,493 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:32,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:30:32,291 INFO L93 Difference]: Finished difference Result 79 states and 86 transitions. [2021-10-21 20:30:32,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-21 20:30:32,292 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-21 20:30:32,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:30:32,294 INFO L225 Difference]: With dead ends: 79 [2021-10-21 20:30:32,294 INFO L226 Difference]: Without dead ends: 77 [2021-10-21 20:30:32,295 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 741.8ms TimeCoverageRelationStatistics Valid=151, Invalid=269, Unknown=0, NotChecked=0, Total=420 [2021-10-21 20:30:32,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-10-21 20:30:32,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 51. [2021-10-21 20:30:32,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 46 states have (on average 1.2608695652173914) internal successors, (58), 50 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:32,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 58 transitions. [2021-10-21 20:30:32,320 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 58 transitions. Word has length 17 [2021-10-21 20:30:32,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:30:32,322 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 58 transitions. [2021-10-21 20:30:32,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:32,323 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 58 transitions. [2021-10-21 20:30:32,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-21 20:30:32,325 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:30:32,326 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:30:32,360 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-10-21 20:30:32,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-10-21 20:30:32,527 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 20:30:32,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:30:32,527 INFO L82 PathProgramCache]: Analyzing trace with hash -1840022701, now seen corresponding path program 1 times [2021-10-21 20:30:32,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:30:32,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855768942] [2021-10-21 20:30:32,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:30:32,528 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:30:32,568 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 20:30:32,569 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [936248715] [2021-10-21 20:30:32,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:30:32,570 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:30:32,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:30:32,571 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:30:32,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-21 20:30:32,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:30:32,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-21 20:30:32,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:30:33,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:30:33,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:30:33,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855768942] [2021-10-21 20:30:33,046 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:30:33,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936248715] [2021-10-21 20:30:33,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [936248715] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:30:33,047 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:30:33,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 20:30:33,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517933662] [2021-10-21 20:30:33,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 20:30:33,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:30:33,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 20:30:33,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:30:33,051 INFO L87 Difference]: Start difference. First operand 51 states and 58 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:33,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:30:33,201 INFO L93 Difference]: Finished difference Result 58 states and 62 transitions. [2021-10-21 20:30:33,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 20:30:33,203 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 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 19 [2021-10-21 20:30:33,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:30:33,206 INFO L225 Difference]: With dead ends: 58 [2021-10-21 20:30:33,207 INFO L226 Difference]: Without dead ends: 56 [2021-10-21 20:30:33,208 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 82.8ms TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-21 20:30:33,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-10-21 20:30:33,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 51. [2021-10-21 20:30:33,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 46 states have (on average 1.2391304347826086) internal successors, (57), 50 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:33,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2021-10-21 20:30:33,237 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 19 [2021-10-21 20:30:33,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:30:33,239 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2021-10-21 20:30:33,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:33,239 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2021-10-21 20:30:33,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-21 20:30:33,240 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:30:33,240 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:30:33,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-21 20:30:33,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:30:33,465 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 20:30:33,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:30:33,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1412177226, now seen corresponding path program 1 times [2021-10-21 20:30:33,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:30:33,467 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413409615] [2021-10-21 20:30:33,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:30:33,467 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:30:33,484 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 20:30:33,485 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [453217738] [2021-10-21 20:30:33,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:30:33,485 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:30:33,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:30:33,487 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:30:33,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-21 20:30:33,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:30:33,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-21 20:30:33,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:30:33,750 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:30:33,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:30:33,755 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413409615] [2021-10-21 20:30:33,756 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:30:33,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453217738] [2021-10-21 20:30:33,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [453217738] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:30:33,759 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 20:30:33,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-21 20:30:33,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454193322] [2021-10-21 20:30:33,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 20:30:33,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:30:33,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 20:30:33,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:30:33,775 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:33,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:30:33,970 INFO L93 Difference]: Finished difference Result 140 states and 157 transitions. [2021-10-21 20:30:33,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 20:30:33,971 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-21 20:30:33,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:30:33,975 INFO L225 Difference]: With dead ends: 140 [2021-10-21 20:30:33,976 INFO L226 Difference]: Without dead ends: 136 [2021-10-21 20:30:33,976 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 69.4ms TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-10-21 20:30:33,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-10-21 20:30:34,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 75. [2021-10-21 20:30:34,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 70 states have (on average 1.3) internal successors, (91), 74 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:34,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 91 transitions. [2021-10-21 20:30:34,009 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 91 transitions. Word has length 20 [2021-10-21 20:30:34,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:30:34,009 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 91 transitions. [2021-10-21 20:30:34,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:34,010 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 91 transitions. [2021-10-21 20:30:34,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-21 20:30:34,012 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:30:34,012 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:30:34,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-21 20:30:34,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:30:34,233 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 20:30:34,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:30:34,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1264867958, now seen corresponding path program 1 times [2021-10-21 20:30:34,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:30:34,234 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827936949] [2021-10-21 20:30:34,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:30:34,234 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:30:34,252 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 20:30:34,252 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [755611723] [2021-10-21 20:30:34,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:30:34,252 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:30:34,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:30:34,254 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:30:34,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-21 20:30:34,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:30:34,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-21 20:30:34,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:30:34,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:30:34,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:30:34,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827936949] [2021-10-21 20:30:34,633 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:30:34,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755611723] [2021-10-21 20:30:34,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755611723] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:30:34,634 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:30:34,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 20:30:34,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485892038] [2021-10-21 20:30:34,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 20:30:34,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:30:34,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 20:30:34,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:30:34,637 INFO L87 Difference]: Start difference. First operand 75 states and 91 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:34,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:30:34,821 INFO L93 Difference]: Finished difference Result 95 states and 110 transitions. [2021-10-21 20:30:34,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 20:30:34,822 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-21 20:30:34,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:30:34,823 INFO L225 Difference]: With dead ends: 95 [2021-10-21 20:30:34,824 INFO L226 Difference]: Without dead ends: 93 [2021-10-21 20:30:34,824 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 92.8ms TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-10-21 20:30:34,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-10-21 20:30:34,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 84. [2021-10-21 20:30:34,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 79 states have (on average 1.2911392405063291) internal successors, (102), 83 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:34,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 102 transitions. [2021-10-21 20:30:34,839 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 102 transitions. Word has length 21 [2021-10-21 20:30:34,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:30:34,840 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 102 transitions. [2021-10-21 20:30:34,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:34,840 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 102 transitions. [2021-10-21 20:30:34,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-21 20:30:34,842 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:30:34,842 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:30:34,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-21 20:30:35,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-21 20:30:35,056 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 20:30:35,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:30:35,056 INFO L82 PathProgramCache]: Analyzing trace with hash 94063923, now seen corresponding path program 1 times [2021-10-21 20:30:35,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:30:35,057 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453862041] [2021-10-21 20:30:35,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:30:35,057 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:30:35,072 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 20:30:35,072 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [94696164] [2021-10-21 20:30:35,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:30:35,073 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:30:35,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:30:35,074 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:30:35,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-21 20:30:35,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:30:35,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-21 20:30:35,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:30:35,488 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:30:35,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:30:35,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453862041] [2021-10-21 20:30:35,491 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:30:35,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94696164] [2021-10-21 20:30:35,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94696164] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:30:35,492 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:30:35,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-21 20:30:35,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922128875] [2021-10-21 20:30:35,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 20:30:35,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:30:35,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 20:30:35,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-21 20:30:35,497 INFO L87 Difference]: Start difference. First operand 84 states and 102 transitions. Second operand has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 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) [2021-10-21 20:30:35,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:30:35,665 INFO L93 Difference]: Finished difference Result 119 states and 136 transitions. [2021-10-21 20:30:35,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 20:30:35,666 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 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) Word has length 22 [2021-10-21 20:30:35,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:30:35,666 INFO L225 Difference]: With dead ends: 119 [2021-10-21 20:30:35,667 INFO L226 Difference]: Without dead ends: 70 [2021-10-21 20:30:35,667 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 127.3ms TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-21 20:30:35,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-10-21 20:30:35,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 62. [2021-10-21 20:30:35,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 57 states have (on average 1.2280701754385965) internal successors, (70), 61 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:35,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 70 transitions. [2021-10-21 20:30:35,677 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 70 transitions. Word has length 22 [2021-10-21 20:30:35,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:30:35,678 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 70 transitions. [2021-10-21 20:30:35,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 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) [2021-10-21 20:30:35,678 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 70 transitions. [2021-10-21 20:30:35,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-21 20:30:35,679 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:30:35,679 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:30:35,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-21 20:30:35,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-10-21 20:30:35,893 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 20:30:35,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:30:35,893 INFO L82 PathProgramCache]: Analyzing trace with hash 62520889, now seen corresponding path program 1 times [2021-10-21 20:30:35,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:30:35,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781015085] [2021-10-21 20:30:35,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:30:35,894 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:30:35,909 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 20:30:35,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1659102559] [2021-10-21 20:30:35,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:30:35,910 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:30:35,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:30:35,911 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:30:35,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-21 20:30:36,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:30:36,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-21 20:30:36,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:30:36,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:30:36,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:30:36,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781015085] [2021-10-21 20:30:36,401 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:30:36,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659102559] [2021-10-21 20:30:36,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659102559] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:30:36,401 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:30:36,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-21 20:30:36,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389554342] [2021-10-21 20:30:36,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 20:30:36,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:30:36,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 20:30:36,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-21 20:30:36,404 INFO L87 Difference]: Start difference. First operand 62 states and 70 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:36,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:30:36,629 INFO L93 Difference]: Finished difference Result 103 states and 115 transitions. [2021-10-21 20:30:36,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-21 20:30:36,630 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 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 23 [2021-10-21 20:30:36,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:30:36,634 INFO L225 Difference]: With dead ends: 103 [2021-10-21 20:30:36,634 INFO L226 Difference]: Without dead ends: 101 [2021-10-21 20:30:36,635 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 145.7ms TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2021-10-21 20:30:36,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-10-21 20:30:36,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 78. [2021-10-21 20:30:36,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 73 states have (on average 1.1917808219178083) internal successors, (87), 77 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:36,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 87 transitions. [2021-10-21 20:30:36,645 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 87 transitions. Word has length 23 [2021-10-21 20:30:36,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:30:36,645 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 87 transitions. [2021-10-21 20:30:36,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:36,646 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 87 transitions. [2021-10-21 20:30:36,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-21 20:30:36,647 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:30:36,647 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:30:36,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-21 20:30:36,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:30:36,861 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 20:30:36,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:30:36,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1112899551, now seen corresponding path program 1 times [2021-10-21 20:30:36,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:30:36,862 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850630817] [2021-10-21 20:30:36,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:30:36,862 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:30:36,879 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 20:30:36,879 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2044242887] [2021-10-21 20:30:36,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:30:36,880 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:30:36,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:30:36,881 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:30:36,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-21 20:30:37,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:30:37,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 53 conjunts are in the unsatisfiable core [2021-10-21 20:30:37,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:30:38,704 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:30:38,704 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:30:38,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850630817] [2021-10-21 20:30:38,705 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:30:38,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044242887] [2021-10-21 20:30:38,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044242887] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:30:38,705 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 20:30:38,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-10-21 20:30:38,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505910486] [2021-10-21 20:30:38,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-21 20:30:38,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:30:38,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-21 20:30:38,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-10-21 20:30:38,708 INFO L87 Difference]: Start difference. First operand 78 states and 87 transitions. Second operand has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 15 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:39,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:30:39,663 INFO L93 Difference]: Finished difference Result 152 states and 167 transitions. [2021-10-21 20:30:39,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-21 20:30:39,664 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 15 states have internal predecessors, (32), 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 32 [2021-10-21 20:30:39,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:30:39,666 INFO L225 Difference]: With dead ends: 152 [2021-10-21 20:30:39,666 INFO L226 Difference]: Without dead ends: 146 [2021-10-21 20:30:39,667 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 909.0ms TimeCoverageRelationStatistics Valid=142, Invalid=508, Unknown=0, NotChecked=0, Total=650 [2021-10-21 20:30:39,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-10-21 20:30:39,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 97. [2021-10-21 20:30:39,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 92 states have (on average 1.2282608695652173) internal successors, (113), 96 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:39,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 113 transitions. [2021-10-21 20:30:39,683 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 113 transitions. Word has length 32 [2021-10-21 20:30:39,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:30:39,683 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 113 transitions. [2021-10-21 20:30:39,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 15 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:39,683 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 113 transitions. [2021-10-21 20:30:39,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-21 20:30:39,685 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:30:39,685 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:30:39,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-21 20:30:39,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:30:39,913 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 20:30:39,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:30:39,913 INFO L82 PathProgramCache]: Analyzing trace with hash -986732336, now seen corresponding path program 1 times [2021-10-21 20:30:39,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:30:39,914 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33089513] [2021-10-21 20:30:39,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:30:39,914 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:30:39,931 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 20:30:39,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2116315116] [2021-10-21 20:30:39,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:30:39,931 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:30:39,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:30:39,932 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:30:39,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-21 20:30:40,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:30:40,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-21 20:30:40,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:30:40,596 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:30:40,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:30:40,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33089513] [2021-10-21 20:30:40,596 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:30:40,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116315116] [2021-10-21 20:30:40,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2116315116] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:30:40,597 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:30:40,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-21 20:30:40,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921682853] [2021-10-21 20:30:40,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-21 20:30:40,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:30:40,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-21 20:30:40,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-10-21 20:30:40,599 INFO L87 Difference]: Start difference. First operand 97 states and 113 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:40,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:30:40,835 INFO L93 Difference]: Finished difference Result 145 states and 165 transitions. [2021-10-21 20:30:40,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-21 20:30:40,836 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 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 32 [2021-10-21 20:30:40,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:30:40,837 INFO L225 Difference]: With dead ends: 145 [2021-10-21 20:30:40,837 INFO L226 Difference]: Without dead ends: 89 [2021-10-21 20:30:40,838 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 193.1ms TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2021-10-21 20:30:40,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-10-21 20:30:40,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 80. [2021-10-21 20:30:40,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 75 states have (on average 1.2) internal successors, (90), 79 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:40,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 90 transitions. [2021-10-21 20:30:40,850 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 90 transitions. Word has length 32 [2021-10-21 20:30:40,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:30:40,851 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 90 transitions. [2021-10-21 20:30:40,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:40,851 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 90 transitions. [2021-10-21 20:30:40,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-21 20:30:40,852 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:30:40,853 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:30:40,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-21 20:30:41,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-21 20:30:41,068 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 20:30:41,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:30:41,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1952541291, now seen corresponding path program 1 times [2021-10-21 20:30:41,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:30:41,069 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787114636] [2021-10-21 20:30:41,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:30:41,069 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:30:41,092 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 20:30:41,092 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1604913259] [2021-10-21 20:30:41,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:30:41,093 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:30:41,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:30:41,109 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:30:41,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-21 20:30:41,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:30:41,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 20:30:41,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:30:41,576 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:30:41,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:30:41,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787114636] [2021-10-21 20:30:41,577 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:30:41,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604913259] [2021-10-21 20:30:41,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604913259] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:30:41,578 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:30:41,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 20:30:41,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904843686] [2021-10-21 20:30:41,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 20:30:41,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:30:41,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 20:30:41,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:30:41,580 INFO L87 Difference]: Start difference. First operand 80 states and 90 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 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) [2021-10-21 20:30:41,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:30:41,637 INFO L93 Difference]: Finished difference Result 152 states and 176 transitions. [2021-10-21 20:30:41,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 20:30:41,638 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 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 33 [2021-10-21 20:30:41,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:30:41,639 INFO L225 Difference]: With dead ends: 152 [2021-10-21 20:30:41,640 INFO L226 Difference]: Without dead ends: 101 [2021-10-21 20:30:41,640 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 20.8ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:30:41,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-10-21 20:30:41,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 89. [2021-10-21 20:30:41,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 84 states have (on average 1.25) internal successors, (105), 88 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:41,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 105 transitions. [2021-10-21 20:30:41,655 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 105 transitions. Word has length 33 [2021-10-21 20:30:41,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:30:41,655 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 105 transitions. [2021-10-21 20:30:41,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 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) [2021-10-21 20:30:41,656 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 105 transitions. [2021-10-21 20:30:41,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-21 20:30:41,657 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:30:41,657 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:30:41,704 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-21 20:30:41,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:30:41,885 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-10-21 20:30:41,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:30:41,885 INFO L82 PathProgramCache]: Analyzing trace with hash -316464415, now seen corresponding path program 1 times [2021-10-21 20:30:41,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:30:41,886 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035271303] [2021-10-21 20:30:41,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:30:41,886 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:30:41,909 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 20:30:41,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [314744447] [2021-10-21 20:30:41,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:30:41,910 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:30:41,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:30:41,919 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:30:41,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-21 20:30:42,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:30:42,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-21 20:30:42,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:30:42,580 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:30:42,580 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:30:42,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035271303] [2021-10-21 20:30:42,581 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:30:42,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314744447] [2021-10-21 20:30:42,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314744447] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:30:42,581 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 20:30:42,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-10-21 20:30:42,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908552256] [2021-10-21 20:30:42,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-21 20:30:42,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:30:42,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-21 20:30:42,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-10-21 20:30:42,583 INFO L87 Difference]: Start difference. First operand 89 states and 105 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:42,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:30:42,737 INFO L93 Difference]: Finished difference Result 89 states and 105 transitions. [2021-10-21 20:30:42,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 20:30:42,737 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 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 36 [2021-10-21 20:30:42,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:30:42,738 INFO L225 Difference]: With dead ends: 89 [2021-10-21 20:30:42,738 INFO L226 Difference]: Without dead ends: 0 [2021-10-21 20:30:42,739 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 173.6ms TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-10-21 20:30:42,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-21 20:30:42,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-21 20:30:42,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:42,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-21 20:30:42,740 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2021-10-21 20:30:42,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:30:42,740 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 20:30:42,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:30:42,740 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-21 20:30:42,740 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-21 20:30:42,743 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:30:42,744 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:30:42,744 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:30:42,744 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:30:42,747 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:30:42,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-21 20:30:42,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-21 20:30:42,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-21 20:30:42,952 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:30:42,955 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:30:42,995 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:30:43,049 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:30:43,089 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:30:43,121 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:30:43,133 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:30:43,163 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:30:43,164 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:30:44,067 INFO L853 garLoopResultBuilder]: At program point L35-2(lines 35 73) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (<= ULTIMATE.start_main_~y~0 1))) (or (and .cse0 (< ULTIMATE.start_main_~b~0 1) (<= ULTIMATE.start_main_~x~0 1) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 0 ULTIMATE.start_main_~b~0) (= ULTIMATE.start_main_~p~0 0) (= (+ ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~r~0) 0) (<= 0 ULTIMATE.start_main_~c~0) (<= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) (<= 1 ULTIMATE.start_main_~y~0) (< ULTIMATE.start_main_~c~0 1) (< 0 ULTIMATE.start_main_~v~0) (= ULTIMATE.start_main_~r~0 1) (= ULTIMATE.start_main_~q~0 1) (< ULTIMATE.start_main_~x~0 (* 2 ULTIMATE.start_main_~a~0)) .cse1) (and .cse0 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~p~0 1) (<= 1 ULTIMATE.start_main_~b~0) (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~r~0 0) (= ULTIMATE.start_main_~s~0 1) (<= 1 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~a~0 1) .cse1 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)))) [2021-10-21 20:30:44,067 INFO L857 garLoopResultBuilder]: For program point L35-3(lines 35 73) no Hoare annotation was computed. [2021-10-21 20:30:44,068 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-21 20:30:44,068 INFO L857 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2021-10-21 20:30:44,068 INFO L853 garLoopResultBuilder]: At program point L11-2(lines 10 16) the Hoare annotation is: (and (= ULTIMATE.start_assume_abort_if_not_~cond 1) (= ULTIMATE.start_main_~k~0 0) (<= ULTIMATE.start_main_~x~0 1) (= ULTIMATE.start_main_~p~0 1) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~q~0 0) (< 0 ULTIMATE.start_main_~v~0) (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0) (<= ULTIMATE.start_main_~v~0 1) (= ULTIMATE.start_main_~r~0 0) (= ULTIMATE.start_main_~d~0 1) (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~s~0 1) (<= 1 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~a~0 1) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) [2021-10-21 20:30:44,068 INFO L857 garLoopResultBuilder]: For program point L11-3(lines 11 14) no Hoare annotation was computed. [2021-10-21 20:30:44,068 INFO L853 garLoopResultBuilder]: At program point L11-5(lines 10 16) the Hoare annotation is: (and (= ULTIMATE.start_assume_abort_if_not_~cond 1) (= ULTIMATE.start_main_~k~0 0) (<= ULTIMATE.start_main_~x~0 1) (= ULTIMATE.start_main_~p~0 1) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~q~0 0) (< 0 ULTIMATE.start_main_~v~0) (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0) (<= ULTIMATE.start_main_~v~0 1) (= ULTIMATE.start_main_~r~0 0) (= ULTIMATE.start_main_~d~0 1) (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~s~0 1) (<= 1 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~a~0 1) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) [2021-10-21 20:30:44,068 INFO L857 garLoopResultBuilder]: For program point L11-6(lines 11 14) no Hoare annotation was computed. [2021-10-21 20:30:44,069 INFO L857 garLoopResultBuilder]: For program point L36(lines 36 37) no Hoare annotation was computed. [2021-10-21 20:30:44,069 INFO L853 garLoopResultBuilder]: At program point L11-8(lines 10 16) the Hoare annotation is: (and (= ULTIMATE.start_assume_abort_if_not_~cond 1) (= ULTIMATE.start_main_~k~0 0) (<= ULTIMATE.start_main_~x~0 1) (= ULTIMATE.start_main_~p~0 1) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~q~0 0) (< 0 ULTIMATE.start_main_~v~0) (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0) (<= ULTIMATE.start_main_~v~0 1) (= ULTIMATE.start_main_~r~0 0) (= ULTIMATE.start_main_~d~0 1) (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~s~0 1) (<= 1 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~a~0 1) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) [2021-10-21 20:30:44,069 INFO L857 garLoopResultBuilder]: For program point L11-9(lines 11 14) no Hoare annotation was computed. [2021-10-21 20:30:44,069 INFO L853 garLoopResultBuilder]: At program point L11-11(lines 55 56) the Hoare annotation is: (and (= ULTIMATE.start_assume_abort_if_not_~cond 1) (= ULTIMATE.start_main_~k~0 0) (<= ULTIMATE.start_main_~x~0 1) (= ULTIMATE.start_main_~p~0 1) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~q~0 0) (< 0 ULTIMATE.start_main_~v~0) (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0) (<= ULTIMATE.start_main_~v~0 1) (= ULTIMATE.start_main_~r~0 0) (= ULTIMATE.start_main_~d~0 1) (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~s~0 1) (<= 1 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~a~0 1) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) [2021-10-21 20:30:44,069 INFO L857 garLoopResultBuilder]: For program point L11-12(lines 11 14) no Hoare annotation was computed. [2021-10-21 20:30:44,069 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-21 20:30:44,070 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-21 20:30:44,070 INFO L860 garLoopResultBuilder]: At program point L11-14(lines 10 16) the Hoare annotation is: true [2021-10-21 20:30:44,070 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-21 20:30:44,070 INFO L857 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2021-10-21 20:30:44,070 INFO L857 garLoopResultBuilder]: For program point L12-1(lines 12 13) no Hoare annotation was computed. [2021-10-21 20:30:44,070 INFO L857 garLoopResultBuilder]: For program point L12-2(lines 12 13) no Hoare annotation was computed. [2021-10-21 20:30:44,070 INFO L857 garLoopResultBuilder]: For program point L12-3(lines 12 13) no Hoare annotation was computed. [2021-10-21 20:30:44,070 INFO L857 garLoopResultBuilder]: For program point L12-4(lines 12 13) no Hoare annotation was computed. [2021-10-21 20:30:44,071 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-21 20:30:44,071 INFO L857 garLoopResultBuilder]: For program point L7(lines 7 9) no Hoare annotation was computed. [2021-10-21 20:30:44,071 INFO L857 garLoopResultBuilder]: For program point L7-1(lines 7 9) no Hoare annotation was computed. [2021-10-21 20:30:44,071 INFO L857 garLoopResultBuilder]: For program point L7-2(lines 7 9) no Hoare annotation was computed. [2021-10-21 20:30:44,071 INFO L857 garLoopResultBuilder]: For program point L7-3(lines 7 9) no Hoare annotation was computed. [2021-10-21 20:30:44,071 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-21 20:30:44,071 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-21 20:30:44,071 INFO L853 garLoopResultBuilder]: At program point L49-2(lines 49 59) the Hoare annotation is: (and (= ULTIMATE.start_assume_abort_if_not_~cond 1) (= ULTIMATE.start_main_~k~0 0) (<= ULTIMATE.start_main_~x~0 1) (= ULTIMATE.start_main_~p~0 1) (<= 1 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~q~0 0) (< 0 ULTIMATE.start_main_~v~0) (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0) (<= ULTIMATE.start_main_~v~0 1) (= ULTIMATE.start_main_~r~0 0) (= ULTIMATE.start_main_~d~0 1) (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~s~0 1) (<= 1 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~a~0 1) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) [2021-10-21 20:30:44,072 INFO L857 garLoopResultBuilder]: For program point L49-3(lines 49 59) no Hoare annotation was computed. [2021-10-21 20:30:44,072 INFO L857 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2021-10-21 20:30:44,072 INFO L857 garLoopResultBuilder]: For program point L8-2(line 8) no Hoare annotation was computed. [2021-10-21 20:30:44,072 INFO L857 garLoopResultBuilder]: For program point L8-4(line 8) no Hoare annotation was computed. [2021-10-21 20:30:44,072 INFO L857 garLoopResultBuilder]: For program point L8-6(line 8) no Hoare annotation was computed. [2021-10-21 20:30:44,075 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-21 20:30:44,076 INFO L860 garLoopResultBuilder]: At program point L75(lines 18 76) the Hoare annotation is: true [2021-10-21 20:30:44,076 INFO L853 garLoopResultBuilder]: At program point L42-2(lines 42 62) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (<= ULTIMATE.start_main_~x~0 1)) (.cse2 (= ULTIMATE.start_main_~p~0 1)) (.cse3 (<= 1 ULTIMATE.start_main_~y~0)) (.cse4 (= ULTIMATE.start_main_~q~0 0)) (.cse5 (= ULTIMATE.start_main_~r~0 0)) (.cse6 (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~a~0)) (.cse7 (= ULTIMATE.start_main_~s~0 1)) (.cse8 (<= ULTIMATE.start_main_~a~0 1))) (or (and .cse0 .cse1 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= ULTIMATE.start_main_~v~0 ULTIMATE.start_main_~b~0) .cse2 (<= 0 ULTIMATE.start_main_~c~0) .cse3 (< ULTIMATE.start_main_~c~0 1) (<= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0) .cse4 (< 0 ULTIMATE.start_main_~v~0) .cse5 .cse6 .cse7 (= ULTIMATE.start_main_~k~0 1) .cse8) (and .cse0 (= ULTIMATE.start_main_~k~0 0) .cse1 .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0) .cse5 .cse6 .cse7 (<= 1 ULTIMATE.start_main_~x~0) .cse8 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)))) [2021-10-21 20:30:44,077 INFO L857 garLoopResultBuilder]: For program point L42-3(lines 42 62) no Hoare annotation was computed. [2021-10-21 20:30:44,077 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-21 20:30:44,077 INFO L857 garLoopResultBuilder]: For program point L43(lines 43 44) no Hoare annotation was computed. [2021-10-21 20:30:44,085 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 20:30:44,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 08:30:44 BoogieIcfgContainer [2021-10-21 20:30:44,135 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 20:30:44,136 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:30:44,136 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:30:44,136 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:30:44,137 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:30:29" (3/4) ... [2021-10-21 20:30:44,142 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-21 20:30:44,157 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2021-10-21 20:30:44,158 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-21 20:30:44,158 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 20:30:44,158 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 20:30:44,206 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 20:30:44,206 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:30:44,208 INFO L168 Benchmark]: Toolchain (without parser) took 15835.54 ms. Allocated memory was 96.5 MB in the beginning and 146.8 MB in the end (delta: 50.3 MB). Free memory was 55.8 MB in the beginning and 84.7 MB in the end (delta: -28.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-10-21 20:30:44,208 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 96.5 MB. Free memory is still 72.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:30:44,209 INFO L168 Benchmark]: CACSL2BoogieTranslator took 315.39 ms. Allocated memory is still 96.5 MB. Free memory was 55.5 MB in the beginning and 71.5 MB in the end (delta: -16.0 MB). Peak memory consumption was 8.2 MB. Max. memory is 16.1 GB. [2021-10-21 20:30:44,209 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.75 ms. Allocated memory is still 96.5 MB. Free memory was 71.5 MB in the beginning and 69.9 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:30:44,210 INFO L168 Benchmark]: Boogie Preprocessor took 29.03 ms. Allocated memory is still 96.5 MB. Free memory was 69.9 MB in the beginning and 68.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:30:44,210 INFO L168 Benchmark]: RCFGBuilder took 395.47 ms. Allocated memory is still 96.5 MB. Free memory was 68.6 MB in the beginning and 57.3 MB in the end (delta: 11.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 20:30:44,211 INFO L168 Benchmark]: TraceAbstraction took 14972.97 ms. Allocated memory was 96.5 MB in the beginning and 146.8 MB in the end (delta: 50.3 MB). Free memory was 56.7 MB in the beginning and 87.8 MB in the end (delta: -31.2 MB). Peak memory consumption was 73.2 MB. Max. memory is 16.1 GB. [2021-10-21 20:30:44,211 INFO L168 Benchmark]: Witness Printer took 70.65 ms. Allocated memory is still 146.8 MB. Free memory was 87.8 MB in the beginning and 84.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:30:44,214 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 96.5 MB. Free memory is still 72.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 315.39 ms. Allocated memory is still 96.5 MB. Free memory was 55.5 MB in the beginning and 71.5 MB in the end (delta: -16.0 MB). Peak memory consumption was 8.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.75 ms. Allocated memory is still 96.5 MB. Free memory was 71.5 MB in the beginning and 69.9 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.03 ms. Allocated memory is still 96.5 MB. Free memory was 69.9 MB in the beginning and 68.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 395.47 ms. Allocated memory is still 96.5 MB. Free memory was 68.6 MB in the beginning and 57.3 MB in the end (delta: 11.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 14972.97 ms. Allocated memory was 96.5 MB in the beginning and 146.8 MB in the end (delta: 50.3 MB). Free memory was 56.7 MB in the beginning and 87.8 MB in the end (delta: -31.2 MB). Peak memory consumption was 73.2 MB. Max. memory is 16.1 GB. * Witness Printer took 70.65 ms. Allocated memory is still 146.8 MB. Free memory was 87.8 MB in the beginning and 84.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: 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, 41 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 14800.0ms, OverallIterations: 12, TraceHistogramMax: 3, EmptinessCheckTime: 40.3ms, AutomataDifference: 3437.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 1118.8ms, InitialAbstractionConstructionTime: 15.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 349 SDtfs, 1376 SDslu, 1023 SDs, 0 SdLazy, 1162 SolverSat, 149 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1058.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 320 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 2620.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=97occurred in iteration=9, InterpolantAutomatonStates: 114, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 212.1ms AutomataMinimizationTime, 12 MinimizatonAttempts, 223 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 20 NumberOfFragments, 437 HoareAnnotationTreeSize, 9 FomulaSimplifications, 1630 FormulaSimplificationTreeSizeReduction, 238.8ms HoareSimplificationTime, 9 FomulaSimplificationsInter, 548 FormulaSimplificationTreeSizeReductionInter, 871.1ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 102.8ms SsaConstructionTime, 294.6ms SatisfiabilityAnalysisTime, 4929.2ms InterpolantComputationTime, 284 NumberOfCodeBlocks, 284 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 272 ConstructedInterpolants, 0 QuantifiedInterpolants, 2367 SizeOfPredicates, 90 NumberOfNonLiveVariables, 1229 ConjunctsInSsa, 192 ConjunctsInUnsatCore, 12 InterpolantComputations, 9 PerfectInterpolantSequences, 30/38 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 5 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (((((((((((((((cond == 1 && k == 0) && x <= 1) && p == 1) && 1 == cond) && 1 <= y) && q == 0) && 0 < v) && c == a) && v <= 1) && r == 0) && d == 1) && y <= a) && s == 1) && 1 <= x) && a <= 1) && b == y - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: (((((((((((((((cond == 1 && x <= 1) && 1 <= cond) && v <= b) && p == 1) && 0 <= c) && 1 <= y) && c < 1) && b <= x) && q == 0) && 0 < v) && r == 0) && y <= a) && s == 1) && k == 1) && a <= 1) || ((((((((((((cond == 1 && k == 0) && x <= 1) && p == 1) && 1 <= y) && q == 0) && c == a) && r == 0) && y <= a) && s == 1) && 1 <= x) && a <= 1) && b == y) - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: ((((((((((((((cond == 1 && k == 0) && x <= 1) && p == 1) && 1 <= y) && q == 0) && 0 < v) && c == a) && v <= 1) && r == 0) && d == 1) && y <= a) && s == 1) && 1 <= x) && a <= 1) && b == y - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (((((((((((((((cond == 1 && k == 0) && x <= 1) && p == 1) && 1 == cond) && 1 <= y) && q == 0) && 0 < v) && c == a) && v <= 1) && r == 0) && d == 1) && y <= a) && s == 1) && 1 <= x) && a <= 1) && b == y - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (((((((((((((((cond == 1 && b < 1) && x <= 1) && 1 <= cond) && 0 <= b) && p == 0) && s + r == 0) && 0 <= c) && a <= x) && 1 <= y) && c < 1) && 0 < v) && r == 1) && q == 1) && x < 2 * a) && y <= 1) || ((((((((((cond == 1 && a == x) && p == 1) && 1 <= b) && q == 0) && r == 0) && s == 1) && 1 <= x) && a <= 1) && y <= 1) && b == y) - InvariantResult [Line: 55]: Loop Invariant Derived loop invariant: (((((((((((((((cond == 1 && k == 0) && x <= 1) && p == 1) && 1 == cond) && 1 <= y) && q == 0) && 0 < v) && c == a) && v <= 1) && r == 0) && d == 1) && y <= a) && s == 1) && 1 <= x) && a <= 1) && b == y - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (((((((((((((((cond == 1 && k == 0) && x <= 1) && p == 1) && 1 == cond) && 1 <= y) && q == 0) && 0 < v) && c == a) && v <= 1) && r == 0) && d == 1) && y <= a) && s == 1) && 1 <= x) && a <= 1) && b == y RESULT: Ultimate proved your program to be correct! [2021-10-21 20:30:44,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_471aaf53-8990-4c2b-854d-5e93d2afa5d7/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...