./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 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1905b193-1841-4cd2-8295-ef12fb11e901/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1905b193-1841-4cd2-8295-ef12fb11e901/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1905b193-1841-4cd2-8295-ef12fb11e901/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1905b193-1841-4cd2-8295-ef12fb11e901/bin/uautomizer-WNIpwEf4Nt/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_1905b193-1841-4cd2-8295-ef12fb11e901/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1905b193-1841-4cd2-8295-ef12fb11e901/bin/uautomizer-WNIpwEf4Nt --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 9ec0e5925e997c01ed0feba8438589759f7e6730 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 01:16:11,528 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 01:16:11,531 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 01:16:11,599 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 01:16:11,600 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 01:16:11,606 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 01:16:11,608 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 01:16:11,612 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 01:16:11,615 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 01:16:11,620 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 01:16:11,622 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 01:16:11,624 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 01:16:11,624 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 01:16:11,627 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 01:16:11,629 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 01:16:11,634 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 01:16:11,636 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 01:16:11,637 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 01:16:11,639 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 01:16:11,649 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 01:16:11,651 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 01:16:11,653 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 01:16:11,657 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 01:16:11,658 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 01:16:11,662 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 01:16:11,662 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 01:16:11,663 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 01:16:11,665 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 01:16:11,665 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 01:16:11,667 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 01:16:11,667 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 01:16:11,668 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 01:16:11,670 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 01:16:11,671 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 01:16:11,673 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 01:16:11,673 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 01:16:11,674 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 01:16:11,674 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 01:16:11,675 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 01:16:11,676 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 01:16:11,676 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 01:16:11,677 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1905b193-1841-4cd2-8295-ef12fb11e901/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-13 01:16:11,723 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 01:16:11,723 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 01:16:11,724 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 01:16:11,724 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 01:16:11,726 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 01:16:11,726 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 01:16:11,726 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 01:16:11,726 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 01:16:11,727 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 01:16:11,727 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 01:16:11,728 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 01:16:11,728 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 01:16:11,728 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 01:16:11,729 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 01:16:11,729 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 01:16:11,729 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 01:16:11,729 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 01:16:11,730 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 01:16:11,730 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 01:16:11,730 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 01:16:11,730 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 01:16:11,731 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 01:16:11,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 01:16:11,731 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 01:16:11,731 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 01:16:11,731 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 01:16:11,732 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 01:16:11,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 01:16:11,732 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 01:16:11,734 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 01:16:11,734 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_1905b193-1841-4cd2-8295-ef12fb11e901/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1905b193-1841-4cd2-8295-ef12fb11e901/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ec0e5925e997c01ed0feba8438589759f7e6730 [2021-10-13 01:16:11,978 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 01:16:12,010 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 01:16:12,015 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 01:16:12,017 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 01:16:12,017 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 01:16:12,018 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1905b193-1841-4cd2-8295-ef12fb11e901/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound1.c [2021-10-13 01:16:12,113 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1905b193-1841-4cd2-8295-ef12fb11e901/bin/uautomizer-WNIpwEf4Nt/data/fde53bb84/e25484eee0b24413ba82e7602ac78bbd/FLAGc2c7e6ada [2021-10-13 01:16:12,590 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 01:16:12,591 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1905b193-1841-4cd2-8295-ef12fb11e901/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound1.c [2021-10-13 01:16:12,597 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1905b193-1841-4cd2-8295-ef12fb11e901/bin/uautomizer-WNIpwEf4Nt/data/fde53bb84/e25484eee0b24413ba82e7602ac78bbd/FLAGc2c7e6ada [2021-10-13 01:16:12,956 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1905b193-1841-4cd2-8295-ef12fb11e901/bin/uautomizer-WNIpwEf4Nt/data/fde53bb84/e25484eee0b24413ba82e7602ac78bbd [2021-10-13 01:16:12,959 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 01:16:12,960 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 01:16:12,962 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 01:16:12,962 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 01:16:12,967 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 01:16:12,967 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:16:12" (1/1) ... [2021-10-13 01:16:12,968 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44caae9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:16:12, skipping insertion in model container [2021-10-13 01:16:12,969 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:16:12" (1/1) ... [2021-10-13 01:16:12,975 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 01:16:12,990 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 01:16:13,149 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_1905b193-1841-4cd2-8295-ef12fb11e901/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound1.c[490,503] [2021-10-13 01:16:13,171 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:16:13,181 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 01:16:13,193 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_1905b193-1841-4cd2-8295-ef12fb11e901/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound1.c[490,503] [2021-10-13 01:16:13,219 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:16:13,238 INFO L208 MainTranslator]: Completed translation [2021-10-13 01:16:13,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:16:13 WrapperNode [2021-10-13 01:16:13,241 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 01:16:13,242 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 01:16:13,243 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 01:16:13,243 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 01:16:13,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:16:13" (1/1) ... [2021-10-13 01:16:13,271 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:16:13" (1/1) ... [2021-10-13 01:16:13,307 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 01:16:13,309 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 01:16:13,309 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 01:16:13,309 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 01:16:13,317 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:16:13" (1/1) ... [2021-10-13 01:16:13,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:16:13" (1/1) ... [2021-10-13 01:16:13,321 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:16:13" (1/1) ... [2021-10-13 01:16:13,321 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:16:13" (1/1) ... [2021-10-13 01:16:13,337 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:16:13" (1/1) ... [2021-10-13 01:16:13,347 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:16:13" (1/1) ... [2021-10-13 01:16:13,350 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:16:13" (1/1) ... [2021-10-13 01:16:13,353 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 01:16:13,360 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 01:16:13,360 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 01:16:13,360 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 01:16:13,361 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:16:13" (1/1) ... [2021-10-13 01:16:13,370 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 01:16:13,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1905b193-1841-4cd2-8295-ef12fb11e901/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:16:13,398 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1905b193-1841-4cd2-8295-ef12fb11e901/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 01:16:13,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1905b193-1841-4cd2-8295-ef12fb11e901/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 01:16:13,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 01:16:13,447 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 01:16:13,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 01:16:13,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 01:16:13,726 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 01:16:13,727 INFO L299 CfgBuilder]: Removed 25 assume(true) statements. [2021-10-13 01:16:13,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:16:13 BoogieIcfgContainer [2021-10-13 01:16:13,729 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 01:16:13,731 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 01:16:13,731 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 01:16:13,735 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 01:16:13,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:16:12" (1/3) ... [2021-10-13 01:16:13,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58cb92fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:16:13, skipping insertion in model container [2021-10-13 01:16:13,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:16:13" (2/3) ... [2021-10-13 01:16:13,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58cb92fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:16:13, skipping insertion in model container [2021-10-13 01:16:13,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:16:13" (3/3) ... [2021-10-13 01:16:13,738 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd3-ll_valuebound1.c [2021-10-13 01:16:13,744 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 01:16:13,744 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-10-13 01:16:13,790 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 01:16:13,796 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, mConcurrency=FINITE_AUTOMATA, 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 [2021-10-13 01:16:13,797 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-10-13 01:16:13,811 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) [2021-10-13 01:16:13,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 01:16:13,816 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:16:13,816 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:16:13,817 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)] === [2021-10-13 01:16:13,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:16:13,822 INFO L82 PathProgramCache]: Analyzing trace with hash -174497841, now seen corresponding path program 1 times [2021-10-13 01:16:13,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:16:13,832 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696309144] [2021-10-13 01:16:13,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:16:13,833 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:16:13,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:16:14,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:16:14,012 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:16:14,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696309144] [2021-10-13 01:16:14,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696309144] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:16:14,013 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:16:14,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 01:16:14,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341175115] [2021-10-13 01:16:14,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 01:16:14,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:16:14,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 01:16:14,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 01:16:14,035 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) [2021-10-13 01:16:14,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:16:14,053 INFO L93 Difference]: Finished difference Result 79 states and 112 transitions. [2021-10-13 01:16:14,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 01:16:14,054 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 [2021-10-13 01:16:14,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:16:14,062 INFO L225 Difference]: With dead ends: 79 [2021-10-13 01:16:14,063 INFO L226 Difference]: Without dead ends: 37 [2021-10-13 01:16:14,065 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 [2021-10-13 01:16:14,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-10-13 01:16:14,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-10-13 01:16:14,097 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) [2021-10-13 01:16:14,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2021-10-13 01:16:14,099 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 14 [2021-10-13 01:16:14,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:16:14,100 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2021-10-13 01:16:14,100 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) [2021-10-13 01:16:14,100 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2021-10-13 01:16:14,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 01:16:14,101 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:16:14,101 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:16:14,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 01:16:14,102 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)] === [2021-10-13 01:16:14,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:16:14,103 INFO L82 PathProgramCache]: Analyzing trace with hash 1454170515, now seen corresponding path program 1 times [2021-10-13 01:16:14,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:16:14,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195756267] [2021-10-13 01:16:14,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:16:14,104 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:16:14,129 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 01:16:14,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [296226100] [2021-10-13 01:16:14,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:16:14,130 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:16:14,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1905b193-1841-4cd2-8295-ef12fb11e901/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:16:14,132 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1905b193-1841-4cd2-8295-ef12fb11e901/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:16:14,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1905b193-1841-4cd2-8295-ef12fb11e901/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 01:16:14,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:16:14,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 01:16:14,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:16:14,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:16:14,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:16:14,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195756267] [2021-10-13 01:16:14,399 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 01:16:14,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296226100] [2021-10-13 01:16:14,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296226100] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:16:14,400 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:16:14,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 01:16:14,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752557704] [2021-10-13 01:16:14,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 01:16:14,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:16:14,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 01:16:14,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 01:16:14,404 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) [2021-10-13 01:16:14,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:16:14,534 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2021-10-13 01:16:14,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 01:16:14,535 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 [2021-10-13 01:16:14,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:16:14,536 INFO L225 Difference]: With dead ends: 64 [2021-10-13 01:16:14,536 INFO L226 Difference]: Without dead ends: 60 [2021-10-13 01:16:14,537 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 79.6ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 01:16:14,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-13 01:16:14,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 39. [2021-10-13 01:16:14,546 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) [2021-10-13 01:16:14,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2021-10-13 01:16:14,552 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 15 [2021-10-13 01:16:14,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:16:14,553 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2021-10-13 01:16:14,553 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) [2021-10-13 01:16:14,554 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2021-10-13 01:16:14,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 01:16:14,555 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:16:14,556 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:16:14,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1905b193-1841-4cd2-8295-ef12fb11e901/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 01:16:14,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1905b193-1841-4cd2-8295-ef12fb11e901/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:16:14,766 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)] === [2021-10-13 01:16:14,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:16:14,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1580206288, now seen corresponding path program 1 times [2021-10-13 01:16:14,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:16:14,776 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531328020] [2021-10-13 01:16:14,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:16:14,778 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:16:14,815 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 01:16:14,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [991886499] [2021-10-13 01:16:14,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:16:14,816 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:16:14,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1905b193-1841-4cd2-8295-ef12fb11e901/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:16:14,817 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1905b193-1841-4cd2-8295-ef12fb11e901/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:16:14,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1905b193-1841-4cd2-8295-ef12fb11e901/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 01:16:14,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:16:14,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-13 01:16:14,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:16:15,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:16:15,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:16:15,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531328020] [2021-10-13 01:16:15,583 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 01:16:15,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991886499] [2021-10-13 01:16:15,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991886499] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:16:15,583 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:16:15,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-13 01:16:15,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412255892] [2021-10-13 01:16:15,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 01:16:15,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:16:15,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 01:16:15,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-10-13 01:16:15,588 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) [2021-10-13 01:16:16,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:16:16,270 INFO L93 Difference]: Finished difference Result 79 states and 86 transitions. [2021-10-13 01:16:16,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 01:16:16,271 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 [2021-10-13 01:16:16,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:16:16,272 INFO L225 Difference]: With dead ends: 79 [2021-10-13 01:16:16,273 INFO L226 Difference]: Without dead ends: 77 [2021-10-13 01:16:16,273 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 640.1ms TimeCoverageRelationStatistics Valid=151, Invalid=269, Unknown=0, NotChecked=0, Total=420 [2021-10-13 01:16:16,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-10-13 01:16:16,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 51. [2021-10-13 01:16:16,281 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) [2021-10-13 01:16:16,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 58 transitions. [2021-10-13 01:16:16,282 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 58 transitions. Word has length 17 [2021-10-13 01:16:16,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:16:16,283 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 58 transitions. [2021-10-13 01:16:16,283 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) [2021-10-13 01:16:16,283 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 58 transitions. [2021-10-13 01:16:16,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-13 01:16:16,284 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:16:16,284 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:16:16,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1905b193-1841-4cd2-8295-ef12fb11e901/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-13 01:16:16,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1905b193-1841-4cd2-8295-ef12fb11e901/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:16:16,485 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)] === [2021-10-13 01:16:16,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:16:16,486 INFO L82 PathProgramCache]: Analyzing trace with hash -1840022701, now seen corresponding path program 1 times [2021-10-13 01:16:16,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:16:16,486 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941325638] [2021-10-13 01:16:16,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:16:16,487 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:16:16,508 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 01:16:16,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1250166980] [2021-10-13 01:16:16,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:16:16,509 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:16:16,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1905b193-1841-4cd2-8295-ef12fb11e901/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:16:16,510 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1905b193-1841-4cd2-8295-ef12fb11e901/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:16:16,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1905b193-1841-4cd2-8295-ef12fb11e901/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-13 01:16:16,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:16:16,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 01:16:16,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:16:16,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:16:16,918 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:16:16,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941325638] [2021-10-13 01:16:16,918 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 01:16:16,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250166980] [2021-10-13 01:16:16,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250166980] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:16:16,919 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:16:16,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-13 01:16:16,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327949253] [2021-10-13 01:16:16,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 01:16:16,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:16:16,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 01:16:16,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-13 01:16:16,921 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) [2021-10-13 01:16:17,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:16:17,027 INFO L93 Difference]: Finished difference Result 58 states and 62 transitions. [2021-10-13 01:16:17,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 01:16:17,028 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 [2021-10-13 01:16:17,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:16:17,029 INFO L225 Difference]: With dead ends: 58 [2021-10-13 01:16:17,029 INFO L226 Difference]: Without dead ends: 56 [2021-10-13 01:16:17,030 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 68.0ms TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-13 01:16:17,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-10-13 01:16:17,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 51. [2021-10-13 01:16:17,047 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) [2021-10-13 01:16:17,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2021-10-13 01:16:17,050 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 19 [2021-10-13 01:16:17,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:16:17,050 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2021-10-13 01:16:17,050 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) [2021-10-13 01:16:17,050 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2021-10-13 01:16:17,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 01:16:17,051 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:16:17,052 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:16:17,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1905b193-1841-4cd2-8295-ef12fb11e901/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-13 01:16:17,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1905b193-1841-4cd2-8295-ef12fb11e901/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:16:17,277 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)] === [2021-10-13 01:16:17,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:16:17,278 INFO L82 PathProgramCache]: Analyzing trace with hash -1412177226, now seen corresponding path program 1 times [2021-10-13 01:16:17,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:16:17,278 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528461425] [2021-10-13 01:16:17,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:16:17,278 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:16:17,295 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 01:16:17,296 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [157324361] [2021-10-13 01:16:17,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:16:17,296 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:16:17,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1905b193-1841-4cd2-8295-ef12fb11e901/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:16:17,297 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1905b193-1841-4cd2-8295-ef12fb11e901/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:16:17,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1905b193-1841-4cd2-8295-ef12fb11e901/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-13 01:16:17,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:16:17,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 01:16:17,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:16:17,529 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:16:17,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:16:17,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528461425] [2021-10-13 01:16:17,529 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 01:16:17,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157324361] [2021-10-13 01:16:17,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157324361] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:16:17,530 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 01:16:17,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-13 01:16:17,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104992814] [2021-10-13 01:16:17,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 01:16:17,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:16:17,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 01:16:17,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-13 01:16:17,532 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) [2021-10-13 01:16:17,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:16:17,684 INFO L93 Difference]: Finished difference Result 140 states and 157 transitions. [2021-10-13 01:16:17,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 01:16:17,685 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 [2021-10-13 01:16:17,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:16:17,686 INFO L225 Difference]: With dead ends: 140 [2021-10-13 01:16:17,686 INFO L226 Difference]: Without dead ends: 136 [2021-10-13 01:16:17,687 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 64.7ms TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-10-13 01:16:17,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-10-13 01:16:17,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 75. [2021-10-13 01:16:17,699 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) [2021-10-13 01:16:17,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 91 transitions. [2021-10-13 01:16:17,701 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 91 transitions. Word has length 20 [2021-10-13 01:16:17,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:16:17,701 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 91 transitions. [2021-10-13 01:16:17,701 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) [2021-10-13 01:16:17,701 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 91 transitions. [2021-10-13 01:16:17,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 01:16:17,702 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:16:17,702 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] [2021-10-13 01:16:17,737 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1905b193-1841-4cd2-8295-ef12fb11e901/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-10-13 01:16:17,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1905b193-1841-4cd2-8295-ef12fb11e901/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:16:17,922 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)] === [2021-10-13 01:16:17,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:16:17,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1264867958, now seen corresponding path program 1 times [2021-10-13 01:16:17,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:16:17,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856705078] [2021-10-13 01:16:17,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:16:17,924 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:16:17,942 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 01:16:17,942 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1750152853] [2021-10-13 01:16:17,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:16:17,943 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:16:17,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1905b193-1841-4cd2-8295-ef12fb11e901/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:16:17,948 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1905b193-1841-4cd2-8295-ef12fb11e901/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:16:17,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1905b193-1841-4cd2-8295-ef12fb11e901/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-13 01:16:18,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:16:18,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 01:16:18,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:16:18,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:16:18,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:16:18,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856705078] [2021-10-13 01:16:18,283 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 01:16:18,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750152853] [2021-10-13 01:16:18,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750152853] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:16:18,284 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:16:18,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-13 01:16:18,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582995018] [2021-10-13 01:16:18,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 01:16:18,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:16:18,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 01:16:18,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-13 01:16:18,286 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) [2021-10-13 01:16:18,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:16:18,439 INFO L93 Difference]: Finished difference Result 95 states and 110 transitions. [2021-10-13 01:16:18,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 01:16:18,440 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 [2021-10-13 01:16:18,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:16:18,441 INFO L225 Difference]: With dead ends: 95 [2021-10-13 01:16:18,441 INFO L226 Difference]: Without dead ends: 93 [2021-10-13 01:16:18,442 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 79.9ms TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-10-13 01:16:18,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-10-13 01:16:18,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 84. [2021-10-13 01:16:18,454 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) [2021-10-13 01:16:18,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 102 transitions. [2021-10-13 01:16:18,455 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 102 transitions. Word has length 21 [2021-10-13 01:16:18,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:16:18,456 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 102 transitions. [2021-10-13 01:16:18,456 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) [2021-10-13 01:16:18,456 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 102 transitions. [2021-10-13 01:16:18,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 01:16:18,457 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:16:18,457 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:16:18,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1905b193-1841-4cd2-8295-ef12fb11e901/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-13 01:16:18,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1905b193-1841-4cd2-8295-ef12fb11e901/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-13 01:16:18,674 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)] === [2021-10-13 01:16:18,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:16:18,675 INFO L82 PathProgramCache]: Analyzing trace with hash 94063923, now seen corresponding path program 1 times [2021-10-13 01:16:18,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:16:18,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916695706] [2021-10-13 01:16:18,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:16:18,675 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:16:18,691 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 01:16:18,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [463861216] [2021-10-13 01:16:18,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:16:18,691 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:16:18,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1905b193-1841-4cd2-8295-ef12fb11e901/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:16:18,692 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1905b193-1841-4cd2-8295-ef12fb11e901/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:16:18,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1905b193-1841-4cd2-8295-ef12fb11e901/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-13 01:16:18,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:16:18,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 01:16:18,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:16:19,052 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:16:19,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:16:19,053 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916695706] [2021-10-13 01:16:19,053 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 01:16:19,053 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463861216] [2021-10-13 01:16:19,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463861216] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:16:19,053 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:16:19,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-13 01:16:19,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873352398] [2021-10-13 01:16:19,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 01:16:19,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:16:19,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 01:16:19,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-13 01:16:19,055 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) [2021-10-13 01:16:19,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:16:19,208 INFO L93 Difference]: Finished difference Result 119 states and 136 transitions. [2021-10-13 01:16:19,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 01:16:19,209 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 [2021-10-13 01:16:19,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:16:19,209 INFO L225 Difference]: With dead ends: 119 [2021-10-13 01:16:19,209 INFO L226 Difference]: Without dead ends: 70 [2021-10-13 01:16:19,211 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 112.0ms TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-13 01:16:19,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-10-13 01:16:19,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 62. [2021-10-13 01:16:19,233 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) [2021-10-13 01:16:19,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 70 transitions. [2021-10-13 01:16:19,236 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 70 transitions. Word has length 22 [2021-10-13 01:16:19,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:16:19,239 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 70 transitions. [2021-10-13 01:16:19,239 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) [2021-10-13 01:16:19,240 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 70 transitions. [2021-10-13 01:16:19,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 01:16:19,240 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:16:19,240 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] [2021-10-13 01:16:19,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1905b193-1841-4cd2-8295-ef12fb11e901/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-13 01:16:19,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1905b193-1841-4cd2-8295-ef12fb11e901/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:16:19,464 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)] === [2021-10-13 01:16:19,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:16:19,465 INFO L82 PathProgramCache]: Analyzing trace with hash 62520889, now seen corresponding path program 1 times [2021-10-13 01:16:19,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:16:19,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829752762] [2021-10-13 01:16:19,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:16:19,465 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:16:19,489 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 01:16:19,494 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [104205846] [2021-10-13 01:16:19,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:16:19,495 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:16:19,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1905b193-1841-4cd2-8295-ef12fb11e901/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:16:19,496 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1905b193-1841-4cd2-8295-ef12fb11e901/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:16:19,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1905b193-1841-4cd2-8295-ef12fb11e901/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-13 01:16:19,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:16:19,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 01:16:19,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:16:19,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:16:19,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:16:19,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829752762] [2021-10-13 01:16:19,950 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 01:16:19,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104205846] [2021-10-13 01:16:19,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104205846] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:16:19,951 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:16:19,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-13 01:16:19,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105812299] [2021-10-13 01:16:19,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 01:16:19,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:16:19,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 01:16:19,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-13 01:16:19,954 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) [2021-10-13 01:16:20,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:16:20,170 INFO L93 Difference]: Finished difference Result 103 states and 115 transitions. [2021-10-13 01:16:20,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 01:16:20,172 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 [2021-10-13 01:16:20,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:16:20,173 INFO L225 Difference]: With dead ends: 103 [2021-10-13 01:16:20,173 INFO L226 Difference]: Without dead ends: 101 [2021-10-13 01:16:20,174 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 148.0ms TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2021-10-13 01:16:20,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-10-13 01:16:20,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 78. [2021-10-13 01:16:20,194 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) [2021-10-13 01:16:20,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 87 transitions. [2021-10-13 01:16:20,195 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 87 transitions. Word has length 23 [2021-10-13 01:16:20,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:16:20,197 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 87 transitions. [2021-10-13 01:16:20,198 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) [2021-10-13 01:16:20,198 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 87 transitions. [2021-10-13 01:16:20,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-13 01:16:20,202 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:16:20,202 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] [2021-10-13 01:16:20,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1905b193-1841-4cd2-8295-ef12fb11e901/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-13 01:16:20,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1905b193-1841-4cd2-8295-ef12fb11e901/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:16:20,417 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)] === [2021-10-13 01:16:20,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:16:20,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1112899551, now seen corresponding path program 1 times [2021-10-13 01:16:20,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:16:20,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833593563] [2021-10-13 01:16:20,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:16:20,418 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:16:20,433 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 01:16:20,433 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [878780919] [2021-10-13 01:16:20,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:16:20,433 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:16:20,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1905b193-1841-4cd2-8295-ef12fb11e901/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:16:20,435 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1905b193-1841-4cd2-8295-ef12fb11e901/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:16:20,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1905b193-1841-4cd2-8295-ef12fb11e901/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-13 01:16:20,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:16:20,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 53 conjunts are in the unsatisfiable core [2021-10-13 01:16:20,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:16:22,162 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:16:22,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:16:22,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833593563] [2021-10-13 01:16:22,162 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 01:16:22,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878780919] [2021-10-13 01:16:22,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878780919] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:16:22,163 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 01:16:22,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-10-13 01:16:22,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205249766] [2021-10-13 01:16:22,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 01:16:22,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:16:22,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 01:16:22,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-10-13 01:16:22,165 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) [2021-10-13 01:16:23,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:16:23,060 INFO L93 Difference]: Finished difference Result 152 states and 167 transitions. [2021-10-13 01:16:23,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 01:16:23,061 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 [2021-10-13 01:16:23,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:16:23,063 INFO L225 Difference]: With dead ends: 152 [2021-10-13 01:16:23,064 INFO L226 Difference]: Without dead ends: 146 [2021-10-13 01:16:23,065 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 856.1ms TimeCoverageRelationStatistics Valid=142, Invalid=508, Unknown=0, NotChecked=0, Total=650 [2021-10-13 01:16:23,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-10-13 01:16:23,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 97. [2021-10-13 01:16:23,087 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) [2021-10-13 01:16:23,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 113 transitions. [2021-10-13 01:16:23,087 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 113 transitions. Word has length 32 [2021-10-13 01:16:23,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:16:23,088 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 113 transitions. [2021-10-13 01:16:23,088 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) [2021-10-13 01:16:23,088 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 113 transitions. [2021-10-13 01:16:23,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-13 01:16:23,093 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:16:23,093 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] [2021-10-13 01:16:23,134 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1905b193-1841-4cd2-8295-ef12fb11e901/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-10-13 01:16:23,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1905b193-1841-4cd2-8295-ef12fb11e901/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:16:23,321 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)] === [2021-10-13 01:16:23,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:16:23,322 INFO L82 PathProgramCache]: Analyzing trace with hash -986732336, now seen corresponding path program 1 times [2021-10-13 01:16:23,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:16:23,322 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206288055] [2021-10-13 01:16:23,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:16:23,322 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:16:23,336 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 01:16:23,336 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1376933942] [2021-10-13 01:16:23,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:16:23,347 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:16:23,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1905b193-1841-4cd2-8295-ef12fb11e901/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:16:23,348 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1905b193-1841-4cd2-8295-ef12fb11e901/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:16:23,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1905b193-1841-4cd2-8295-ef12fb11e901/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-13 01:16:23,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:16:23,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 01:16:23,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:16:23,968 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:16:23,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:16:23,968 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206288055] [2021-10-13 01:16:23,969 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 01:16:23,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376933942] [2021-10-13 01:16:23,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376933942] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:16:23,971 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:16:23,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-13 01:16:23,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378207250] [2021-10-13 01:16:23,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 01:16:23,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:16:23,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 01:16:23,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-10-13 01:16:23,973 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) [2021-10-13 01:16:24,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:16:24,198 INFO L93 Difference]: Finished difference Result 145 states and 165 transitions. [2021-10-13 01:16:24,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 01:16:24,198 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 [2021-10-13 01:16:24,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:16:24,199 INFO L225 Difference]: With dead ends: 145 [2021-10-13 01:16:24,199 INFO L226 Difference]: Without dead ends: 89 [2021-10-13 01:16:24,200 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 187.2ms TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2021-10-13 01:16:24,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-10-13 01:16:24,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 80. [2021-10-13 01:16:24,209 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) [2021-10-13 01:16:24,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 90 transitions. [2021-10-13 01:16:24,211 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 90 transitions. Word has length 32 [2021-10-13 01:16:24,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:16:24,211 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 90 transitions. [2021-10-13 01:16:24,211 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) [2021-10-13 01:16:24,211 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 90 transitions. [2021-10-13 01:16:24,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-13 01:16:24,214 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:16:24,214 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] [2021-10-13 01:16:24,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1905b193-1841-4cd2-8295-ef12fb11e901/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-13 01:16:24,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1905b193-1841-4cd2-8295-ef12fb11e901/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:16:24,437 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)] === [2021-10-13 01:16:24,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:16:24,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1952541291, now seen corresponding path program 1 times [2021-10-13 01:16:24,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:16:24,437 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062897982] [2021-10-13 01:16:24,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:16:24,438 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:16:24,450 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 01:16:24,451 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [330623501] [2021-10-13 01:16:24,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:16:24,451 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:16:24,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1905b193-1841-4cd2-8295-ef12fb11e901/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:16:24,461 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1905b193-1841-4cd2-8295-ef12fb11e901/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:16:24,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1905b193-1841-4cd2-8295-ef12fb11e901/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-13 01:16:24,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:16:24,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 01:16:24,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:16:24,869 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:16:24,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:16:24,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062897982] [2021-10-13 01:16:24,869 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 01:16:24,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330623501] [2021-10-13 01:16:24,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [330623501] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:16:24,874 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:16:24,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 01:16:24,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949464442] [2021-10-13 01:16:24,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 01:16:24,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:16:24,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 01:16:24,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 01:16:24,877 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) [2021-10-13 01:16:24,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:16:24,937 INFO L93 Difference]: Finished difference Result 152 states and 176 transitions. [2021-10-13 01:16:24,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 01:16:24,938 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 [2021-10-13 01:16:24,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:16:24,941 INFO L225 Difference]: With dead ends: 152 [2021-10-13 01:16:24,941 INFO L226 Difference]: Without dead ends: 101 [2021-10-13 01:16:24,942 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 21.3ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 01:16:24,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-10-13 01:16:24,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 89. [2021-10-13 01:16:24,963 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) [2021-10-13 01:16:24,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 105 transitions. [2021-10-13 01:16:24,964 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 105 transitions. Word has length 33 [2021-10-13 01:16:24,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:16:24,964 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 105 transitions. [2021-10-13 01:16:24,964 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) [2021-10-13 01:16:24,964 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 105 transitions. [2021-10-13 01:16:24,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-13 01:16:24,966 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:16:24,967 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] [2021-10-13 01:16:25,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1905b193-1841-4cd2-8295-ef12fb11e901/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-13 01:16:25,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1905b193-1841-4cd2-8295-ef12fb11e901/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:16:25,189 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)] === [2021-10-13 01:16:25,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:16:25,189 INFO L82 PathProgramCache]: Analyzing trace with hash -316464415, now seen corresponding path program 1 times [2021-10-13 01:16:25,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:16:25,190 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327742462] [2021-10-13 01:16:25,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:16:25,190 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:16:25,203 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 01:16:25,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2127588982] [2021-10-13 01:16:25,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:16:25,204 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:16:25,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1905b193-1841-4cd2-8295-ef12fb11e901/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:16:25,209 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1905b193-1841-4cd2-8295-ef12fb11e901/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:16:25,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1905b193-1841-4cd2-8295-ef12fb11e901/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-13 01:16:25,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:16:25,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 01:16:25,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:16:25,792 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:16:25,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:16:25,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327742462] [2021-10-13 01:16:25,793 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 01:16:25,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127588982] [2021-10-13 01:16:25,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127588982] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:16:25,793 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 01:16:25,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-10-13 01:16:25,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711969930] [2021-10-13 01:16:25,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 01:16:25,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:16:25,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 01:16:25,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-10-13 01:16:25,795 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) [2021-10-13 01:16:25,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:16:25,920 INFO L93 Difference]: Finished difference Result 89 states and 105 transitions. [2021-10-13 01:16:25,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 01:16:25,920 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 [2021-10-13 01:16:25,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:16:25,920 INFO L225 Difference]: With dead ends: 89 [2021-10-13 01:16:25,920 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 01:16:25,921 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 133.3ms TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-10-13 01:16:25,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 01:16:25,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 01:16:25,922 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) [2021-10-13 01:16:25,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 01:16:25,922 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2021-10-13 01:16:25,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:16:25,922 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 01:16:25,923 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) [2021-10-13 01:16:25,923 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 01:16:25,923 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 01:16:25,924 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 01:16:25,925 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 01:16:25,925 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 01:16:25,925 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 01:16:25,925 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 01:16:25,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1905b193-1841-4cd2-8295-ef12fb11e901/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-13 01:16:26,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1905b193-1841-4cd2-8295-ef12fb11e901/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-13 01:16:26,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 01:16:26,150 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:16:26,152 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:16:26,189 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:16:26,226 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:16:26,247 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:16:26,266 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:16:26,280 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:16:26,305 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:16:26,306 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:16:27,108 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)))) [2021-10-13 01:16:27,108 INFO L857 garLoopResultBuilder]: For program point L35-3(lines 35 73) no Hoare annotation was computed. [2021-10-13 01:16:27,108 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-13 01:16:27,108 INFO L857 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2021-10-13 01:16:27,109 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)) [2021-10-13 01:16:27,109 INFO L857 garLoopResultBuilder]: For program point L11-3(lines 11 14) no Hoare annotation was computed. [2021-10-13 01:16:27,109 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)) [2021-10-13 01:16:27,109 INFO L857 garLoopResultBuilder]: For program point L11-6(lines 11 14) no Hoare annotation was computed. [2021-10-13 01:16:27,109 INFO L857 garLoopResultBuilder]: For program point L36(lines 36 37) no Hoare annotation was computed. [2021-10-13 01:16:27,109 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)) [2021-10-13 01:16:27,110 INFO L857 garLoopResultBuilder]: For program point L11-9(lines 11 14) no Hoare annotation was computed. [2021-10-13 01:16:27,110 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)) [2021-10-13 01:16:27,110 INFO L857 garLoopResultBuilder]: For program point L11-12(lines 11 14) no Hoare annotation was computed. [2021-10-13 01:16:27,110 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-13 01:16:27,110 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 01:16:27,110 INFO L860 garLoopResultBuilder]: At program point L11-14(lines 10 16) the Hoare annotation is: true [2021-10-13 01:16:27,110 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 01:16:27,110 INFO L857 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2021-10-13 01:16:27,110 INFO L857 garLoopResultBuilder]: For program point L12-1(lines 12 13) no Hoare annotation was computed. [2021-10-13 01:16:27,111 INFO L857 garLoopResultBuilder]: For program point L12-2(lines 12 13) no Hoare annotation was computed. [2021-10-13 01:16:27,111 INFO L857 garLoopResultBuilder]: For program point L12-3(lines 12 13) no Hoare annotation was computed. [2021-10-13 01:16:27,111 INFO L857 garLoopResultBuilder]: For program point L12-4(lines 12 13) no Hoare annotation was computed. [2021-10-13 01:16:27,111 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-13 01:16:27,111 INFO L857 garLoopResultBuilder]: For program point L7(lines 7 9) no Hoare annotation was computed. [2021-10-13 01:16:27,111 INFO L857 garLoopResultBuilder]: For program point L7-1(lines 7 9) no Hoare annotation was computed. [2021-10-13 01:16:27,111 INFO L857 garLoopResultBuilder]: For program point L7-2(lines 7 9) no Hoare annotation was computed. [2021-10-13 01:16:27,111 INFO L857 garLoopResultBuilder]: For program point L7-3(lines 7 9) no Hoare annotation was computed. [2021-10-13 01:16:27,111 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 01:16:27,111 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-13 01:16:27,112 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)) [2021-10-13 01:16:27,112 INFO L857 garLoopResultBuilder]: For program point L49-3(lines 49 59) no Hoare annotation was computed. [2021-10-13 01:16:27,112 INFO L857 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2021-10-13 01:16:27,112 INFO L857 garLoopResultBuilder]: For program point L8-2(line 8) no Hoare annotation was computed. [2021-10-13 01:16:27,112 INFO L857 garLoopResultBuilder]: For program point L8-4(line 8) no Hoare annotation was computed. [2021-10-13 01:16:27,112 INFO L857 garLoopResultBuilder]: For program point L8-6(line 8) no Hoare annotation was computed. [2021-10-13 01:16:27,112 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 01:16:27,112 INFO L860 garLoopResultBuilder]: At program point L75(lines 18 76) the Hoare annotation is: true [2021-10-13 01:16:27,113 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)))) [2021-10-13 01:16:27,113 INFO L857 garLoopResultBuilder]: For program point L42-3(lines 42 62) no Hoare annotation was computed. [2021-10-13 01:16:27,113 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-13 01:16:27,113 INFO L857 garLoopResultBuilder]: For program point L43(lines 43 44) no Hoare annotation was computed. [2021-10-13 01:16:27,117 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 01:16:27,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 01:16:27 BoogieIcfgContainer [2021-10-13 01:16:27,140 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 01:16:27,141 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 01:16:27,141 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 01:16:27,141 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 01:16:27,141 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:16:13" (3/4) ... [2021-10-13 01:16:27,145 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 01:16:27,156 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2021-10-13 01:16:27,157 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 01:16:27,157 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 01:16:27,158 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 01:16:27,200 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1905b193-1841-4cd2-8295-ef12fb11e901/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 01:16:27,200 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 01:16:27,202 INFO L168 Benchmark]: Toolchain (without parser) took 14240.32 ms. Allocated memory was 92.3 MB in the beginning and 151.0 MB in the end (delta: 58.7 MB). Free memory was 62.8 MB in the beginning and 100.5 MB in the end (delta: -37.7 MB). Peak memory consumption was 20.0 MB. Max. memory is 16.1 GB. [2021-10-13 01:16:27,202 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 92.3 MB. Free memory is still 46.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:16:27,203 INFO L168 Benchmark]: CACSL2BoogieTranslator took 279.50 ms. Allocated memory is still 92.3 MB. Free memory was 62.8 MB in the beginning and 67.5 MB in the end (delta: -4.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 01:16:27,203 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.26 ms. Allocated memory is still 92.3 MB. Free memory was 67.5 MB in the beginning and 65.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 01:16:27,203 INFO L168 Benchmark]: Boogie Preprocessor took 50.16 ms. Allocated memory is still 92.3 MB. Free memory was 65.8 MB in the beginning and 64.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 01:16:27,204 INFO L168 Benchmark]: RCFGBuilder took 369.43 ms. Allocated memory is still 92.3 MB. Free memory was 64.4 MB in the beginning and 53.3 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 01:16:27,204 INFO L168 Benchmark]: TraceAbstraction took 13409.08 ms. Allocated memory was 92.3 MB in the beginning and 151.0 MB in the end (delta: 58.7 MB). Free memory was 52.7 MB in the beginning and 103.7 MB in the end (delta: -51.0 MB). Peak memory consumption was 77.8 MB. Max. memory is 16.1 GB. [2021-10-13 01:16:27,205 INFO L168 Benchmark]: Witness Printer took 59.56 ms. Allocated memory is still 151.0 MB. Free memory was 103.7 MB in the beginning and 100.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 01:16:27,207 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 92.3 MB. Free memory is still 46.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 279.50 ms. Allocated memory is still 92.3 MB. Free memory was 62.8 MB in the beginning and 67.5 MB in the end (delta: -4.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 65.26 ms. Allocated memory is still 92.3 MB. Free memory was 67.5 MB in the beginning and 65.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 50.16 ms. Allocated memory is still 92.3 MB. Free memory was 65.8 MB in the beginning and 64.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 369.43 ms. Allocated memory is still 92.3 MB. Free memory was 64.4 MB in the beginning and 53.3 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 13409.08 ms. Allocated memory was 92.3 MB in the beginning and 151.0 MB in the end (delta: 58.7 MB). Free memory was 52.7 MB in the beginning and 103.7 MB in the end (delta: -51.0 MB). Peak memory consumption was 77.8 MB. Max. memory is 16.1 GB. * Witness Printer took 59.56 ms. Allocated memory is still 151.0 MB. Free memory was 103.7 MB in the beginning and 100.5 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: 13328.8ms, OverallIterations: 12, TraceHistogramMax: 3, EmptinessCheckTime: 27.8ms, AutomataDifference: 2989.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 962.4ms, InitialAbstractionConstructionTime: 9.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 349 SDtfs, 1376 SDslu, 1023 SDs, 0 SdLazy, 1162 SolverSat, 149 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 900.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 320 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 2390.9ms 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: 188.6ms AutomataMinimizationTime, 12 MinimizatonAttempts, 223 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 20 NumberOfFragments, 437 HoareAnnotationTreeSize, 9 FomulaSimplifications, 1630 FormulaSimplificationTreeSizeReduction, 179.7ms HoareSimplificationTime, 9 FomulaSimplificationsInter, 548 FormulaSimplificationTreeSizeReductionInter, 774.9ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 90.8ms SsaConstructionTime, 252.6ms SatisfiabilityAnalysisTime, 4444.3ms 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! [2021-10-13 01:16:27,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1905b193-1841-4cd2-8295-ef12fb11e901/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...