./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops-crafted-1/vnew2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_571d742e-bfab-4ba3-b069-2c93ad6980b1/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_571d742e-bfab-4ba3-b069-2c93ad6980b1/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_571d742e-bfab-4ba3-b069-2c93ad6980b1/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_571d742e-bfab-4ba3-b069-2c93ad6980b1/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops-crafted-1/vnew2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_571d742e-bfab-4ba3-b069-2c93ad6980b1/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_571d742e-bfab-4ba3-b069-2c93ad6980b1/bin/uautomizer-DrprNOufMa --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 6cb26fc448cefa547e2463448c16c0efba841bf620bbd2ba420ae15e288e3a3f --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 00:08:12,935 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 00:08:12,936 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 00:08:12,959 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 00:08:12,959 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 00:08:12,960 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 00:08:12,961 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 00:08:12,963 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 00:08:12,965 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 00:08:12,966 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 00:08:12,966 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 00:08:12,968 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 00:08:12,968 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 00:08:12,969 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 00:08:12,970 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 00:08:12,971 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 00:08:12,972 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 00:08:12,973 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 00:08:12,975 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 00:08:12,976 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 00:08:12,978 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 00:08:12,979 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 00:08:12,981 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 00:08:12,982 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 00:08:12,986 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 00:08:12,986 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 00:08:12,986 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 00:08:12,988 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 00:08:12,988 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 00:08:12,989 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 00:08:12,990 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 00:08:12,991 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 00:08:12,991 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 00:08:12,992 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 00:08:12,994 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 00:08:12,994 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 00:08:12,995 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 00:08:12,995 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 00:08:12,995 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 00:08:12,996 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 00:08:12,997 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 00:08:12,998 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_571d742e-bfab-4ba3-b069-2c93ad6980b1/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-07 00:08:13,019 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 00:08:13,019 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 00:08:13,019 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 00:08:13,019 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 00:08:13,020 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-07 00:08:13,020 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-07 00:08:13,021 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 00:08:13,021 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 00:08:13,021 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 00:08:13,022 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 00:08:13,022 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-07 00:08:13,022 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-07 00:08:13,022 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-07 00:08:13,022 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 00:08:13,023 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-07 00:08:13,023 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-07 00:08:13,023 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-07 00:08:13,023 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-07 00:08:13,023 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-07 00:08:13,024 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 00:08:13,024 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-07 00:08:13,024 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 00:08:13,024 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 00:08:13,024 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-07 00:08:13,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:08:13,025 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 00:08:13,025 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-07 00:08:13,025 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-07 00:08:13,025 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-07 00:08:13,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-07 00:08:13,026 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-07 00:08:13,026 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-07 00:08:13,026 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-07 00:08:13,026 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 00:08:13,026 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_571d742e-bfab-4ba3-b069-2c93ad6980b1/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_571d742e-bfab-4ba3-b069-2c93ad6980b1/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6cb26fc448cefa547e2463448c16c0efba841bf620bbd2ba420ae15e288e3a3f [2021-12-07 00:08:13,199 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 00:08:13,214 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 00:08:13,215 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 00:08:13,216 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 00:08:13,217 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 00:08:13,217 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_571d742e-bfab-4ba3-b069-2c93ad6980b1/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/loops-crafted-1/vnew2.c [2021-12-07 00:08:13,262 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_571d742e-bfab-4ba3-b069-2c93ad6980b1/bin/uautomizer-DrprNOufMa/data/5260fb426/17d29b0f154d4a4483a674af290c4936/FLAG635136500 [2021-12-07 00:08:13,643 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 00:08:13,643 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_571d742e-bfab-4ba3-b069-2c93ad6980b1/sv-benchmarks/c/loops-crafted-1/vnew2.c [2021-12-07 00:08:13,649 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_571d742e-bfab-4ba3-b069-2c93ad6980b1/bin/uautomizer-DrprNOufMa/data/5260fb426/17d29b0f154d4a4483a674af290c4936/FLAG635136500 [2021-12-07 00:08:13,658 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_571d742e-bfab-4ba3-b069-2c93ad6980b1/bin/uautomizer-DrprNOufMa/data/5260fb426/17d29b0f154d4a4483a674af290c4936 [2021-12-07 00:08:13,659 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 00:08:13,660 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 00:08:13,662 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 00:08:13,662 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 00:08:13,664 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 00:08:13,665 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:08:13" (1/1) ... [2021-12-07 00:08:13,666 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13e00a2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:08:13, skipping insertion in model container [2021-12-07 00:08:13,666 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:08:13" (1/1) ... [2021-12-07 00:08:13,670 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 00:08:13,680 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 00:08:13,795 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_571d742e-bfab-4ba3-b069-2c93ad6980b1/sv-benchmarks/c/loops-crafted-1/vnew2.c[403,416] [2021-12-07 00:08:13,804 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:08:13,810 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 00:08:13,818 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_571d742e-bfab-4ba3-b069-2c93ad6980b1/sv-benchmarks/c/loops-crafted-1/vnew2.c[403,416] [2021-12-07 00:08:13,821 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:08:13,830 INFO L208 MainTranslator]: Completed translation [2021-12-07 00:08:13,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:08:13 WrapperNode [2021-12-07 00:08:13,831 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 00:08:13,831 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 00:08:13,832 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 00:08:13,832 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 00:08:13,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:08:13" (1/1) ... [2021-12-07 00:08:13,842 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:08:13" (1/1) ... [2021-12-07 00:08:13,854 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 40 [2021-12-07 00:08:13,854 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 00:08:13,855 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 00:08:13,855 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 00:08:13,855 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 00:08:13,861 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:08:13" (1/1) ... [2021-12-07 00:08:13,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:08:13" (1/1) ... [2021-12-07 00:08:13,862 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:08:13" (1/1) ... [2021-12-07 00:08:13,862 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:08:13" (1/1) ... [2021-12-07 00:08:13,864 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:08:13" (1/1) ... [2021-12-07 00:08:13,867 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:08:13" (1/1) ... [2021-12-07 00:08:13,867 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:08:13" (1/1) ... [2021-12-07 00:08:13,868 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 00:08:13,869 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 00:08:13,869 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 00:08:13,869 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 00:08:13,870 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:08:13" (1/1) ... [2021-12-07 00:08:13,877 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:08:13,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_571d742e-bfab-4ba3-b069-2c93ad6980b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:08:13,898 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_571d742e-bfab-4ba3-b069-2c93ad6980b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-07 00:08:13,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_571d742e-bfab-4ba3-b069-2c93ad6980b1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-07 00:08:13,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-07 00:08:13,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-07 00:08:13,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 00:08:13,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 00:08:13,976 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 00:08:13,977 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 00:08:14,049 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 00:08:14,053 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 00:08:14,054 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-07 00:08:14,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:08:14 BoogieIcfgContainer [2021-12-07 00:08:14,055 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 00:08:14,056 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-07 00:08:14,057 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-07 00:08:14,059 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-07 00:08:14,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 12:08:13" (1/3) ... [2021-12-07 00:08:14,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c0ea46a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:08:14, skipping insertion in model container [2021-12-07 00:08:14,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:08:13" (2/3) ... [2021-12-07 00:08:14,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c0ea46a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:08:14, skipping insertion in model container [2021-12-07 00:08:14,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:08:14" (3/3) ... [2021-12-07 00:08:14,061 INFO L111 eAbstractionObserver]: Analyzing ICFG vnew2.c [2021-12-07 00:08:14,065 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-07 00:08:14,065 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-07 00:08:14,100 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-07 00:08:14,105 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-07 00:08:14,106 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-07 00:08:14,116 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.5454545454545454) 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) [2021-12-07 00:08:14,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-07 00:08:14,122 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:08:14,122 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:08:14,123 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:08:14,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:08:14,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1807091466, now seen corresponding path program 1 times [2021-12-07 00:08:14,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:08:14,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116492911] [2021-12-07 00:08:14,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:08:14,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:08:14,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:08:14,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:08:14,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:08:14,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116492911] [2021-12-07 00:08:14,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116492911] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:08:14,241 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:08:14,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-07 00:08:14,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179514721] [2021-12-07 00:08:14,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:08:14,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-07 00:08:14,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:08:14,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-07 00:08:14,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-07 00:08:14,269 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.5454545454545454) 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) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-12-07 00:08:14,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:08:14,279 INFO L93 Difference]: Finished difference Result 22 states and 27 transitions. [2021-12-07 00:08:14,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-07 00:08:14,280 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2021-12-07 00:08:14,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:08:14,285 INFO L225 Difference]: With dead ends: 22 [2021-12-07 00:08:14,286 INFO L226 Difference]: Without dead ends: 8 [2021-12-07 00:08:14,288 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-07 00:08:14,291 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:08:14,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:08:14,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-12-07 00:08:14,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-12-07 00:08:14,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:08:14,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-12-07 00:08:14,312 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 7 [2021-12-07 00:08:14,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:08:14,313 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-12-07 00:08:14,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-12-07 00:08:14,313 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-12-07 00:08:14,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-07 00:08:14,313 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:08:14,313 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:08:14,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-07 00:08:14,314 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:08:14,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:08:14,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1806972302, now seen corresponding path program 1 times [2021-12-07 00:08:14,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:08:14,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373989893] [2021-12-07 00:08:14,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:08:14,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:08:14,326 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 00:08:14,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [80129854] [2021-12-07 00:08:14,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:08:14,326 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:08:14,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_571d742e-bfab-4ba3-b069-2c93ad6980b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:08:14,327 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_571d742e-bfab-4ba3-b069-2c93ad6980b1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:08:14,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_571d742e-bfab-4ba3-b069-2c93ad6980b1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-07 00:08:14,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:08:14,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-07 00:08:14,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:08:14,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:08:14,424 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:08:14,424 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:08:14,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373989893] [2021-12-07 00:08:14,424 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 00:08:14,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80129854] [2021-12-07 00:08:14,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80129854] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:08:14,425 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:08:14,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:08:14,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504481970] [2021-12-07 00:08:14,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:08:14,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:08:14,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:08:14,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:08:14,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:08:14,427 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-12-07 00:08:14,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:08:14,450 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2021-12-07 00:08:14,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:08:14,451 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 7 [2021-12-07 00:08:14,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:08:14,451 INFO L225 Difference]: With dead ends: 13 [2021-12-07 00:08:14,452 INFO L226 Difference]: Without dead ends: 9 [2021-12-07 00:08:14,452 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:08:14,453 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 1 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:08:14,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 12 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:08:14,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-12-07 00:08:14,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-12-07 00:08:14,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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) [2021-12-07 00:08:14,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-12-07 00:08:14,456 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2021-12-07 00:08:14,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:08:14,456 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-12-07 00:08:14,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-12-07 00:08:14,457 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-12-07 00:08:14,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-07 00:08:14,457 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:08:14,457 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:08:14,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_571d742e-bfab-4ba3-b069-2c93ad6980b1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-07 00:08:14,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_571d742e-bfab-4ba3-b069-2c93ad6980b1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:08:14,660 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:08:14,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:08:14,662 INFO L85 PathProgramCache]: Analyzing trace with hash 183172310, now seen corresponding path program 1 times [2021-12-07 00:08:14,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:08:14,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87576980] [2021-12-07 00:08:14,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:08:14,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:08:14,715 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 00:08:14,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1499112585] [2021-12-07 00:08:14,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:08:14,718 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:08:14,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_571d742e-bfab-4ba3-b069-2c93ad6980b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:08:14,722 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_571d742e-bfab-4ba3-b069-2c93ad6980b1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:08:14,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_571d742e-bfab-4ba3-b069-2c93ad6980b1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-07 00:08:14,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:08:14,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-07 00:08:14,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:08:14,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:08:14,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:08:15,282 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:08:15,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:08:15,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87576980] [2021-12-07 00:08:15,283 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 00:08:15,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499112585] [2021-12-07 00:08:15,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499112585] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:08:15,283 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:08:15,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-12-07 00:08:15,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266166977] [2021-12-07 00:08:15,283 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:08:15,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-07 00:08:15,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:08:15,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-07 00:08:15,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-12-07 00:08:15,285 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 10 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) [2021-12-07 00:08:21,853 WARN L227 SmtUtils]: Spent 6.38s on a formula simplification that was a NOOP. DAG size: 49 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-07 00:08:23,431 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-12-07 00:08:30,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:08:30,502 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2021-12-07 00:08:30,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-07 00:08:30,502 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 10 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 8 [2021-12-07 00:08:30,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:08:30,503 INFO L225 Difference]: With dead ends: 20 [2021-12-07 00:08:30,503 INFO L226 Difference]: Without dead ends: 12 [2021-12-07 00:08:30,504 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272 [2021-12-07 00:08:30,505 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 21 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-07 00:08:30,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 17 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-07 00:08:30,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-12-07 00:08:30,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-12-07 00:08:30,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 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) [2021-12-07 00:08:30,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-12-07 00:08:30,510 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2021-12-07 00:08:30,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:08:30,510 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-12-07 00:08:30,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 10 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) [2021-12-07 00:08:30,511 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-12-07 00:08:30,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-07 00:08:30,511 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:08:30,511 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:08:30,531 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_571d742e-bfab-4ba3-b069-2c93ad6980b1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-07 00:08:30,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_571d742e-bfab-4ba3-b069-2c93ad6980b1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:08:30,713 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:08:30,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:08:30,716 INFO L85 PathProgramCache]: Analyzing trace with hash -422590578, now seen corresponding path program 2 times [2021-12-07 00:08:30,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:08:30,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834858238] [2021-12-07 00:08:30,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:08:30,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:08:30,764 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 00:08:30,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1392186446] [2021-12-07 00:08:30,765 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 00:08:30,765 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:08:30,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_571d742e-bfab-4ba3-b069-2c93ad6980b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:08:30,766 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_571d742e-bfab-4ba3-b069-2c93ad6980b1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:08:30,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_571d742e-bfab-4ba3-b069-2c93ad6980b1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-07 00:08:30,843 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-07 00:08:30,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:08:30,844 WARN L261 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 37 conjunts are in the unsatisfiable core [2021-12-07 00:08:30,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:08:30,993 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:08:30,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:08:32,327 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:08:32,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:08:32,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834858238] [2021-12-07 00:08:32,328 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 00:08:32,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392186446] [2021-12-07 00:08:32,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392186446] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:08:32,328 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:08:32,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-12-07 00:08:32,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648421438] [2021-12-07 00:08:32,328 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:08:32,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-07 00:08:32,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:08:32,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-07 00:08:32,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-12-07 00:08:32,329 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 17 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 16 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) [2021-12-07 00:12:06,231 WARN L227 SmtUtils]: Spent 3.39m on a formula simplification. DAG size of input: 103 DAG size of output: 99 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-07 00:12:09,189 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-12-07 00:13:23,886 WARN L227 SmtUtils]: Spent 1.11m on a formula simplification that was a NOOP. DAG size: 81 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-07 00:13:25,892 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-12-07 00:13:27,880 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-12-07 00:13:29,931 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-12-07 00:13:32,273 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-12-07 00:14:11,145 WARN L227 SmtUtils]: Spent 31.11s on a formula simplification. DAG size of input: 63 DAG size of output: 58 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-07 00:14:14,105 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-12-07 00:15:30,294 WARN L227 SmtUtils]: Spent 1.09m on a formula simplification that was a NOOP. DAG size: 85 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-07 00:15:32,300 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-12-07 00:15:34,317 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-12-07 00:17:26,842 WARN L227 SmtUtils]: Spent 1.71m on a formula simplification that was a NOOP. DAG size: 106 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-07 00:17:28,294 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-12-07 00:18:48,254 WARN L227 SmtUtils]: Spent 59.91s on a formula simplification. DAG size of input: 67 DAG size of output: 62 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-07 00:18:49,368 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-12-07 00:18:52,170 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-12-07 00:21:53,165 WARN L227 SmtUtils]: Spent 2.82m on a formula simplification. DAG size of input: 88 DAG size of output: 80 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-07 00:21:55,169 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-12-07 00:22:10,533 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-12-07 00:22:12,553 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-12-07 00:23:08,236 WARN L227 SmtUtils]: Spent 37.83s on a formula simplification. DAG size of input: 70 DAG size of output: 65 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-07 00:23:15,588 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-12-07 00:23:18,467 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-12-07 00:23:31,261 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-12-07 00:23:36,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:23:36,239 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2021-12-07 00:23:36,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-07 00:23:36,240 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 16 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 11 [2021-12-07 00:23:36,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:23:36,240 INFO L225 Difference]: With dead ends: 32 [2021-12-07 00:23:36,240 INFO L226 Difference]: Without dead ends: 18 [2021-12-07 00:23:36,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 866.4s TimeCoverageRelationStatistics Valid=330, Invalid=628, Unknown=34, NotChecked=0, Total=992 [2021-12-07 00:23:36,242 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 71 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 34 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.8s IncrementalHoareTripleChecker+Time [2021-12-07 00:23:36,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 23 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 92 Invalid, 14 Unknown, 0 Unchecked, 38.8s Time] [2021-12-07 00:23:36,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-12-07 00:23:36,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-12-07 00:23:36,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 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) [2021-12-07 00:23:36,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-12-07 00:23:36,246 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 11 [2021-12-07 00:23:36,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:23:36,246 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-12-07 00:23:36,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 16 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) [2021-12-07 00:23:36,246 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-12-07 00:23:36,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-07 00:23:36,247 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:23:36,247 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:23:36,266 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_571d742e-bfab-4ba3-b069-2c93ad6980b1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-07 00:23:36,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_571d742e-bfab-4ba3-b069-2c93ad6980b1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:23:36,448 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:23:36,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:23:36,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1035092622, now seen corresponding path program 3 times [2021-12-07 00:23:36,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:23:36,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686005829] [2021-12-07 00:23:36,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:23:36,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:23:36,498 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 00:23:36,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [991778553] [2021-12-07 00:23:36,498 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-07 00:23:36,498 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:23:36,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_571d742e-bfab-4ba3-b069-2c93ad6980b1/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:23:36,499 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_571d742e-bfab-4ba3-b069-2c93ad6980b1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:23:36,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_571d742e-bfab-4ba3-b069-2c93ad6980b1/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-07 00:23:36,702 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-12-07 00:23:36,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:23:36,705 WARN L261 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 71 conjunts are in the unsatisfiable core [2021-12-07 00:23:36,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:23:36,912 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:23:36,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:23:42,993 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:23:42,993 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:23:42,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686005829] [2021-12-07 00:23:42,993 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 00:23:42,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991778553] [2021-12-07 00:23:42,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991778553] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:23:42,994 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:23:42,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2021-12-07 00:23:42,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575919388] [2021-12-07 00:23:42,994 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:23:42,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-12-07 00:23:42,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:23:42,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-12-07 00:23:42,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2021-12-07 00:23:42,995 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 27 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 26 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) [2021-12-07 00:23:45,258 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse3 (mod (+ 9 |c_ULTIMATE.start_main_~j~0#1|) 4294967296)) (.cse0 (mod (+ 21 |c_ULTIMATE.start_main_~j~0#1|) 4294967296)) (.cse7 (mod (+ 30 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse16 (mod (+ |c_ULTIMATE.start_main_~j~0#1| 12) 4294967296)) (.cse5 (mod |c_ULTIMATE.start_main_~j~0#1| 4294967296)) (.cse6 (mod (+ 30 |c_ULTIMATE.start_main_~j~0#1|) 4294967296)) (.cse15 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 15) 4294967296)) (.cse13 (mod (+ 3 |c_ULTIMATE.start_main_~j~0#1|) 4294967296)) (.cse17 (mod (+ 21 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse11 (mod (+ 6 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse21 (mod (+ 3 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse14 (mod (+ |c_ULTIMATE.start_main_~j~0#1| 15) 4294967296)) (.cse19 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296)) (.cse9 (mod (+ 9 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse10 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 27) 4294967296)) (.cse8 (mod (+ |c_ULTIMATE.start_main_~j~0#1| 27) 4294967296)) (.cse1 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 24) 4294967296)) (.cse20 (mod (+ |c_ULTIMATE.start_main_~j~0#1| 24) 4294967296)) (.cse12 (mod (+ 6 |c_ULTIMATE.start_main_~j~0#1|) 4294967296)) (.cse18 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 12) 4294967296)) (.cse2 (mod (+ c_~SIZE~0 2) 4294967296)) (.cse4 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 18) 4294967296)) (.cse22 (mod (+ |c_ULTIMATE.start_main_~j~0#1| 18) 4294967296))) (and (= .cse0 (mod (+ 21 |c_ULTIMATE.start_main_~k~0#1|) 4294967296)) (not (= (mod (mod .cse1 .cse2) 4294967296) 0)) (= (mod (+ 9 |c_ULTIMATE.start_main_~k~0#1|) 4294967296) .cse3) (not (= (mod (mod .cse4 .cse2) 4294967296) 0)) (= .cse5 (mod |c_ULTIMATE.start_main_~k~0#1| 4294967296)) (= .cse6 .cse7) (= (mod (+ |c_ULTIMATE.start_main_~k~0#1| 27) 4294967296) .cse8) (= .cse9 .cse3) (not (= (mod (mod .cse10 .cse2) 4294967296) 0)) (= .cse11 .cse12) (= (mod (+ 3 |c_ULTIMATE.start_main_~k~0#1|) 4294967296) .cse13) (= .cse14 .cse15) (= (mod (+ |c_ULTIMATE.start_main_~k~0#1| 12) 4294967296) .cse16) (= .cse17 .cse0) (not (= (mod (mod .cse7 .cse2) 4294967296) 0)) (= .cse18 .cse16) (= .cse19 .cse5) (= .cse20 (mod (+ |c_ULTIMATE.start_main_~k~0#1| 24) 4294967296)) (= (mod (+ 30 |c_ULTIMATE.start_main_~k~0#1|) 4294967296) .cse6) (not (= (mod (mod .cse15 .cse2) 4294967296) 0)) (= .cse21 .cse13) (not (= (mod (mod .cse17 .cse2) 4294967296) 0)) (not (= (mod (mod .cse11 .cse2) 4294967296) 0)) (not (= (mod (mod .cse21 .cse2) 4294967296) 0)) (= c_~SIZE~0 20000001) (= .cse14 (mod (+ |c_ULTIMATE.start_main_~k~0#1| 15) 4294967296)) (not (= (mod (mod .cse19 .cse2) 4294967296) 0)) (not (= (mod (mod .cse9 .cse2) 4294967296) 0)) (= .cse10 .cse8) (= .cse1 .cse20) (= (mod (+ 6 |c_ULTIMATE.start_main_~k~0#1|) 4294967296) .cse12) (= (mod (+ |c_ULTIMATE.start_main_~k~0#1| 18) 4294967296) .cse22) (not (= (mod (mod .cse18 .cse2) 4294967296) 0)) (= .cse4 .cse22))) is different from false