./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound50.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_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/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_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound50.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/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_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/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 0b8bf2ea6b03a85ab0986e14b8a2b627c39af27a ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 00:38:11,070 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:38:11,072 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:38:11,126 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:38:11,127 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:38:11,131 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:38:11,133 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:38:11,137 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:38:11,140 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:38:11,147 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:38:11,148 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:38:11,150 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:38:11,151 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:38:11,153 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:38:11,156 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:38:11,163 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:38:11,166 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:38:11,167 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:38:11,170 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:38:11,176 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:38:11,178 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:38:11,184 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:38:11,187 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:38:11,188 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:38:11,194 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:38:11,195 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:38:11,195 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:38:11,197 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:38:11,198 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:38:11,199 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:38:11,200 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:38:11,201 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:38:11,204 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:38:11,205 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:38:11,206 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:38:11,207 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:38:11,207 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:38:11,208 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:38:11,208 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:38:11,209 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:38:11,210 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:38:11,211 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-13 00:38:11,254 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:38:11,254 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:38:11,255 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:38:11,255 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:38:11,256 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:38:11,256 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:38:11,256 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:38:11,257 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:38:11,257 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:38:11,257 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:38:11,257 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:38:11,257 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:38:11,257 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 00:38:11,258 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 00:38:11,258 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 00:38:11,258 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:38:11,258 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 00:38:11,258 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:38:11,259 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 00:38:11,259 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:38:11,259 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:38:11,259 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 00:38:11,259 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:38:11,260 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:38:11,260 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 00:38:11,260 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 00:38:11,260 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 00:38:11,260 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 00:38:11,261 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 00:38:11,261 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:38:11,261 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_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0b8bf2ea6b03a85ab0986e14b8a2b627c39af27a [2021-10-13 00:38:11,528 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:38:11,549 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:38:11,551 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:38:11,553 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:38:11,553 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:38:11,554 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound50.c [2021-10-13 00:38:11,623 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/data/a97e47a05/15976ea4e2904882a4e7f64d6b28548b/FLAGe7df83985 [2021-10-13 00:38:12,073 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:38:12,079 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound50.c [2021-10-13 00:38:12,085 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/data/a97e47a05/15976ea4e2904882a4e7f64d6b28548b/FLAGe7df83985 [2021-10-13 00:38:12,450 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/data/a97e47a05/15976ea4e2904882a4e7f64d6b28548b [2021-10-13 00:38:12,453 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:38:12,454 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 00:38:12,456 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:38:12,456 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:38:12,460 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:38:12,461 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:38:12" (1/1) ... [2021-10-13 00:38:12,462 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f73316e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:12, skipping insertion in model container [2021-10-13 00:38:12,462 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:38:12" (1/1) ... [2021-10-13 00:38:12,469 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:38:12,483 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:38:12,670 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_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound50.c[537,550] [2021-10-13 00:38:12,692 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:38:12,700 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:38:12,710 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_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound50.c[537,550] [2021-10-13 00:38:12,715 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:38:12,726 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:38:12,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:12 WrapperNode [2021-10-13 00:38:12,726 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:38:12,727 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 00:38:12,728 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 00:38:12,728 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 00:38:12,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:12" (1/1) ... [2021-10-13 00:38:12,741 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:12" (1/1) ... [2021-10-13 00:38:12,760 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 00:38:12,761 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:38:12,761 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:38:12,761 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:38:12,769 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:12" (1/1) ... [2021-10-13 00:38:12,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:12" (1/1) ... [2021-10-13 00:38:12,771 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:12" (1/1) ... [2021-10-13 00:38:12,771 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:12" (1/1) ... [2021-10-13 00:38:12,775 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:12" (1/1) ... [2021-10-13 00:38:12,779 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:12" (1/1) ... [2021-10-13 00:38:12,781 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:12" (1/1) ... [2021-10-13 00:38:12,782 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:38:12,783 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:38:12,783 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:38:12,784 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:38:12,784 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:12" (1/1) ... [2021-10-13 00:38:12,794 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:38:12,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:38:12,813 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 00:38:12,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 00:38:12,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 00:38:12,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 00:38:12,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:38:12,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:38:13,052 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:38:13,052 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2021-10-13 00:38:13,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:38:13 BoogieIcfgContainer [2021-10-13 00:38:13,054 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:38:13,056 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 00:38:13,056 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 00:38:13,065 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 00:38:13,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:38:12" (1/3) ... [2021-10-13 00:38:13,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7927bf13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:38:13, skipping insertion in model container [2021-10-13 00:38:13,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:12" (2/3) ... [2021-10-13 00:38:13,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7927bf13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:38:13, skipping insertion in model container [2021-10-13 00:38:13,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:38:13" (3/3) ... [2021-10-13 00:38:13,069 INFO L111 eAbstractionObserver]: Analyzing ICFG prodbin-ll_valuebound50.c [2021-10-13 00:38:13,076 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 00:38:13,076 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-13 00:38:13,120 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 00:38:13,128 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 00:38:13,128 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-13 00:38:13,140 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 20 states have (on average 1.55) internal successors, (31), 22 states have internal predecessors, (31), 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 00:38:13,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 00:38:13,144 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:38:13,145 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:38:13,145 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:38:13,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:38:13,150 INFO L82 PathProgramCache]: Analyzing trace with hash 330581779, now seen corresponding path program 1 times [2021-10-13 00:38:13,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:38:13,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479471862] [2021-10-13 00:38:13,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:38:13,158 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:38:13,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:38:13,292 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 00:38:13,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:38:13,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479471862] [2021-10-13 00:38:13,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479471862] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:38:13,294 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:38:13,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 00:38:13,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336358559] [2021-10-13 00:38:13,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 00:38:13,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:38:13,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 00:38:13,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 00:38:13,315 INFO L87 Difference]: Start difference. First operand has 23 states, 20 states have (on average 1.55) internal successors, (31), 22 states have internal predecessors, (31), 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 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 00:38:13,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:38:13,330 INFO L93 Difference]: Finished difference Result 43 states and 58 transitions. [2021-10-13 00:38:13,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 00:38:13,332 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-13 00:38:13,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:38:13,339 INFO L225 Difference]: With dead ends: 43 [2021-10-13 00:38:13,339 INFO L226 Difference]: Without dead ends: 19 [2021-10-13 00:38:13,342 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 00:38:13,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-10-13 00:38:13,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-10-13 00:38:13,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 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 00:38:13,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2021-10-13 00:38:13,373 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 11 [2021-10-13 00:38:13,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:38:13,373 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2021-10-13 00:38:13,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 00:38:13,374 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2021-10-13 00:38:13,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 00:38:13,374 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:38:13,375 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:38:13,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 00:38:13,375 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:38:13,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:38:13,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1507472743, now seen corresponding path program 1 times [2021-10-13 00:38:13,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:38:13,377 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933953092] [2021-10-13 00:38:13,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:38:13,377 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:38:13,399 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:38:13,400 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1698231984] [2021-10-13 00:38:13,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:38:13,400 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:38:13,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:38:13,402 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:38:13,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 00:38:13,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:38:13,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 00:38:13,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:38:13,725 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 00:38:13,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:38:13,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933953092] [2021-10-13 00:38:13,726 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:38:13,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698231984] [2021-10-13 00:38:13,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1698231984] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:38:13,727 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:38:13,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 00:38:13,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038513457] [2021-10-13 00:38:13,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:38:13,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:38:13,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:38:13,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:38:13,730 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 00:38:13,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:38:13,819 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2021-10-13 00:38:13,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:38:13,820 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-13 00:38:13,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:38:13,821 INFO L225 Difference]: With dead ends: 32 [2021-10-13 00:38:13,821 INFO L226 Difference]: Without dead ends: 30 [2021-10-13 00:38:13,822 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:38:13,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-10-13 00:38:13,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 21. [2021-10-13 00:38:13,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 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 00:38:13,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2021-10-13 00:38:13,827 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 11 [2021-10-13 00:38:13,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:38:13,828 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2021-10-13 00:38:13,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 00:38:13,828 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2021-10-13 00:38:13,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 00:38:13,829 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:38:13,829 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:38:13,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 00:38:14,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-10-13 00:38:14,051 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:38:14,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:38:14,052 INFO L82 PathProgramCache]: Analyzing trace with hash -937526112, now seen corresponding path program 1 times [2021-10-13 00:38:14,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:38:14,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331493156] [2021-10-13 00:38:14,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:38:14,053 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:38:14,088 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:38:14,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [271671264] [2021-10-13 00:38:14,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:38:14,089 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:38:14,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:38:14,092 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:38:14,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 00:38:14,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:38:14,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 00:38:14,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:38:14,363 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 00:38:14,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:38:14,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331493156] [2021-10-13 00:38:14,366 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:38:14,366 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271671264] [2021-10-13 00:38:14,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271671264] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:38:14,367 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:38:14,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 00:38:14,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321106950] [2021-10-13 00:38:14,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:38:14,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:38:14,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:38:14,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:38:14,371 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 00:38:14,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:38:14,448 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2021-10-13 00:38:14,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:38:14,449 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 00:38:14,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:38:14,450 INFO L225 Difference]: With dead ends: 28 [2021-10-13 00:38:14,450 INFO L226 Difference]: Without dead ends: 24 [2021-10-13 00:38:14,450 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 59.1ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:38:14,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-13 00:38:14,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2021-10-13 00:38:14,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 20 states have (on average 1.15) internal successors, (23), 21 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 00:38:14,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2021-10-13 00:38:14,455 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 14 [2021-10-13 00:38:14,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:38:14,456 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2021-10-13 00:38:14,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 00:38:14,456 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2021-10-13 00:38:14,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 00:38:14,457 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:38:14,457 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:38:14,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-13 00:38:14,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:38:14,683 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:38:14,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:38:14,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1030171456, now seen corresponding path program 1 times [2021-10-13 00:38:14,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:38:14,685 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119169343] [2021-10-13 00:38:14,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:38:14,685 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:38:14,709 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:38:14,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1021752771] [2021-10-13 00:38:14,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:38:14,709 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:38:14,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:38:14,710 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:38:14,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-13 00:38:14,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:38:14,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-13 00:38:14,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:38:15,376 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 00:38:15,377 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:38:15,377 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119169343] [2021-10-13 00:38:15,378 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:38:15,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021752771] [2021-10-13 00:38:15,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021752771] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:38:15,380 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:38:15,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-13 00:38:15,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003841560] [2021-10-13 00:38:15,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 00:38:15,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:38:15,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 00:38:15,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:38:15,384 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 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 00:38:17,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:38:17,525 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2021-10-13 00:38:17,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 00:38:17,525 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 00:38:17,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:38:17,526 INFO L225 Difference]: With dead ends: 34 [2021-10-13 00:38:17,527 INFO L226 Difference]: Without dead ends: 32 [2021-10-13 00:38:17,527 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 105.5ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-10-13 00:38:17,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-13 00:38:17,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 26. [2021-10-13 00:38:17,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 25 states have internal predecessors, (28), 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 00:38:17,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2021-10-13 00:38:17,539 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 16 [2021-10-13 00:38:17,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:38:17,540 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2021-10-13 00:38:17,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 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 00:38:17,540 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2021-10-13 00:38:17,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 00:38:17,541 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:38:17,541 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:38:17,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-13 00:38:17,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:38:17,757 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:38:17,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:38:17,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1032018498, now seen corresponding path program 1 times [2021-10-13 00:38:17,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:38:17,758 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719267467] [2021-10-13 00:38:17,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:38:17,758 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:38:17,780 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:38:17,780 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [399352289] [2021-10-13 00:38:17,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:38:17,781 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:38:17,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:38:17,782 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:38:17,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-13 00:38:17,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:38:17,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-13 00:38:17,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:38:18,951 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 00:38:18,951 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:38:18,951 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719267467] [2021-10-13 00:38:18,951 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:38:18,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399352289] [2021-10-13 00:38:18,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399352289] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:38:18,952 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:38:18,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-10-13 00:38:18,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323847832] [2021-10-13 00:38:18,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 00:38:18,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:38:18,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 00:38:18,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-10-13 00:38:18,954 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 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 00:38:19,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:38:19,246 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2021-10-13 00:38:19,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 00:38:19,252 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-13 00:38:19,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:38:19,253 INFO L225 Difference]: With dead ends: 40 [2021-10-13 00:38:19,253 INFO L226 Difference]: Without dead ends: 34 [2021-10-13 00:38:19,254 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 221.8ms TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2021-10-13 00:38:19,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-13 00:38:19,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2021-10-13 00:38:19,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 29 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 00:38:19,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2021-10-13 00:38:19,261 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 16 [2021-10-13 00:38:19,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:38:19,262 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2021-10-13 00:38:19,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 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 00:38:19,262 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2021-10-13 00:38:19,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-13 00:38:19,263 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:38:19,263 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:38:19,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-13 00:38:19,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:38:19,479 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:38:19,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:38:19,480 INFO L82 PathProgramCache]: Analyzing trace with hash -1993537895, now seen corresponding path program 1 times [2021-10-13 00:38:19,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:38:19,480 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470146250] [2021-10-13 00:38:19,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:38:19,480 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:38:19,503 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:38:19,504 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1049383759] [2021-10-13 00:38:19,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:38:19,504 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:38:19,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:38:19,511 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:38:19,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-13 00:38:19,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:38:19,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 00:38:19,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:38:19,788 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 00:38:19,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:38:19,788 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470146250] [2021-10-13 00:38:19,788 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:38:19,789 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049383759] [2021-10-13 00:38:19,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049383759] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:38:19,789 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:38:19,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-13 00:38:19,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013075832] [2021-10-13 00:38:19,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:38:19,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:38:19,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:38:19,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:38:19,790 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 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 00:38:25,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:38:25,150 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2021-10-13 00:38:25,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:38:25,150 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 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 00:38:25,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:38:25,151 INFO L225 Difference]: With dead ends: 31 [2021-10-13 00:38:25,151 INFO L226 Difference]: Without dead ends: 27 [2021-10-13 00:38:25,152 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 171.1ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:38:25,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-13 00:38:25,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2021-10-13 00:38:25,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:38:25,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2021-10-13 00:38:25,157 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 19 [2021-10-13 00:38:25,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:38:25,157 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2021-10-13 00:38:25,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 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 00:38:25,158 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2021-10-13 00:38:25,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 00:38:25,158 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:38:25,159 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:38:25,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-13 00:38:25,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-13 00:38:25,371 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:38:25,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:38:25,372 INFO L82 PathProgramCache]: Analyzing trace with hash -184870151, now seen corresponding path program 2 times [2021-10-13 00:38:25,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:38:25,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862534618] [2021-10-13 00:38:25,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:38:25,373 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:38:25,399 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:38:25,404 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [738312483] [2021-10-13 00:38:25,409 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:38:25,410 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:38:25,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:38:25,411 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:38:25,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-13 00:38:25,532 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:38:25,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:38:25,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 38 conjunts are in the unsatisfiable core [2021-10-13 00:38:25,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:38:55,111 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:38:55,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:38:55,112 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862534618] [2021-10-13 00:38:55,112 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:38:55,112 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738312483] [2021-10-13 00:38:55,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738312483] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:38:55,113 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:38:55,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-10-13 00:38:55,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228434612] [2021-10-13 00:38:55,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 00:38:55,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:38:55,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 00:38:55,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-13 00:38:55,114 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 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 00:39:00,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:39:00,271 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2021-10-13 00:39:00,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 00:39:00,272 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 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 00:39:00,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:39:00,273 INFO L225 Difference]: With dead ends: 38 [2021-10-13 00:39:00,273 INFO L226 Difference]: Without dead ends: 36 [2021-10-13 00:39:00,274 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 264.1ms TimeCoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2021-10-13 00:39:00,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-13 00:39:00,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 27. [2021-10-13 00:39:00,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 26 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:39:00,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2021-10-13 00:39:00,279 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 21 [2021-10-13 00:39:00,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:39:00,279 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2021-10-13 00:39:00,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 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 00:39:00,280 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2021-10-13 00:39:00,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 00:39:00,280 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:39:00,281 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:39:00,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-13 00:39:00,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:39:00,491 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:39:00,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:39:00,492 INFO L82 PathProgramCache]: Analyzing trace with hash -183023109, now seen corresponding path program 1 times [2021-10-13 00:39:00,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:39:00,492 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452281209] [2021-10-13 00:39:00,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:39:00,492 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:39:00,510 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:39:00,510 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1589141045] [2021-10-13 00:39:00,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:39:00,510 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:39:00,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:39:00,511 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:39:00,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-13 00:39:00,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:39:00,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-13 00:39:00,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:39:04,626 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:39:04,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:39:04,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452281209] [2021-10-13 00:39:04,627 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:39:04,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589141045] [2021-10-13 00:39:04,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589141045] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:39:04,627 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:39:04,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-10-13 00:39:04,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020565695] [2021-10-13 00:39:04,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 00:39:04,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:39:04,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 00:39:04,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-13 00:39:04,629 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 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 00:39:10,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:39:10,661 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2021-10-13 00:39:10,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 00:39:10,662 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 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 00:39:10,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:39:10,662 INFO L225 Difference]: With dead ends: 39 [2021-10-13 00:39:10,662 INFO L226 Difference]: Without dead ends: 37 [2021-10-13 00:39:10,663 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1756.4ms TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-10-13 00:39:10,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-10-13 00:39:10,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 27. [2021-10-13 00:39:10,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 26 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:39:10,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2021-10-13 00:39:10,668 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 21 [2021-10-13 00:39:10,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:39:10,669 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2021-10-13 00:39:10,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 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 00:39:10,669 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2021-10-13 00:39:10,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 00:39:10,670 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:39:10,670 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:39:10,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-13 00:39:10,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-10-13 00:39:10,875 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:39:10,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:39:10,876 INFO L82 PathProgramCache]: Analyzing trace with hash -577897161, now seen corresponding path program 2 times [2021-10-13 00:39:10,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:39:10,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968959002] [2021-10-13 00:39:10,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:39:10,876 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:39:10,903 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:39:10,904 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2018348646] [2021-10-13 00:39:10,904 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:39:10,904 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:39:10,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:39:10,919 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:39:10,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-13 00:39:11,062 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:39:11,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:39:11,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 38 conjunts are in the unsatisfiable core [2021-10-13 00:39:11,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:39:15,446 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:39:15,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:39:15,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968959002] [2021-10-13 00:39:15,446 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:39:15,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018348646] [2021-10-13 00:39:15,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018348646] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:39:15,446 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:39:15,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-10-13 00:39:15,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470504146] [2021-10-13 00:39:15,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 00:39:15,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:39:15,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 00:39:15,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-10-13 00:39:15,448 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 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 00:39:15,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:39:15,979 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2021-10-13 00:39:15,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 00:39:15,980 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 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 00:39:15,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:39:15,981 INFO L225 Difference]: With dead ends: 43 [2021-10-13 00:39:15,981 INFO L226 Difference]: Without dead ends: 41 [2021-10-13 00:39:15,981 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 312.0ms TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2021-10-13 00:39:15,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-10-13 00:39:15,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 32. [2021-10-13 00:39:15,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 31 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 00:39:15,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2021-10-13 00:39:15,989 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 21 [2021-10-13 00:39:15,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:39:15,990 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2021-10-13 00:39:15,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 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 00:39:15,990 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2021-10-13 00:39:15,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 00:39:15,991 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:39:15,991 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:39:16,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-13 00:39:16,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-10-13 00:39:16,207 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:39:16,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:39:16,208 INFO L82 PathProgramCache]: Analyzing trace with hash -576050119, now seen corresponding path program 2 times [2021-10-13 00:39:16,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:39:16,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359845413] [2021-10-13 00:39:16,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:39:16,208 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:39:16,219 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:39:16,225 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [886155619] [2021-10-13 00:39:16,226 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:39:16,226 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:39:16,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:39:16,227 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:39:16,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-13 00:39:16,451 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:39:16,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:39:16,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-13 00:39:16,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:39:24,760 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:39:24,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:39:24,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359845413] [2021-10-13 00:39:24,760 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:39:24,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886155619] [2021-10-13 00:39:24,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886155619] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:39:24,761 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:39:24,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-10-13 00:39:24,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435490048] [2021-10-13 00:39:24,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 00:39:24,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:39:24,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 00:39:24,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-10-13 00:39:24,762 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 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 00:39:25,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:39:25,224 INFO L93 Difference]: Finished difference Result 44 states and 49 transitions. [2021-10-13 00:39:25,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 00:39:25,224 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 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 00:39:25,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:39:25,225 INFO L225 Difference]: With dead ends: 44 [2021-10-13 00:39:25,225 INFO L226 Difference]: Without dead ends: 42 [2021-10-13 00:39:25,225 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 287.3ms TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-10-13 00:39:25,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-10-13 00:39:25,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 27. [2021-10-13 00:39:25,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 26 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:39:25,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2021-10-13 00:39:25,233 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 21 [2021-10-13 00:39:25,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:39:25,233 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2021-10-13 00:39:25,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 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 00:39:25,234 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2021-10-13 00:39:25,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 00:39:25,235 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:39:25,236 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:39:25,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-13 00:39:25,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:39:25,464 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:39:25,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:39:25,465 INFO L82 PathProgramCache]: Analyzing trace with hash 322246368, now seen corresponding path program 3 times [2021-10-13 00:39:25,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:39:25,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923398934] [2021-10-13 00:39:25,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:39:25,465 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:39:25,480 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:39:25,486 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1210753860] [2021-10-13 00:39:25,487 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 00:39:25,487 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:39:25,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:39:25,488 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:39:25,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-13 00:39:25,702 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 00:39:25,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:39:25,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 36 conjunts are in the unsatisfiable core [2021-10-13 00:39:25,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:39:27,164 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 00:39:27,164 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:39:27,164 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923398934] [2021-10-13 00:39:27,164 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:39:27,164 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210753860] [2021-10-13 00:39:27,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210753860] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:39:27,164 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:39:27,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-10-13 00:39:27,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337979628] [2021-10-13 00:39:27,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 00:39:27,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:39:27,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 00:39:27,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-13 00:39:27,166 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:39:41,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:39:41,670 INFO L93 Difference]: Finished difference Result 61 states and 68 transitions. [2021-10-13 00:39:41,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 00:39:41,670 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-13 00:39:41,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:39:41,671 INFO L225 Difference]: With dead ends: 61 [2021-10-13 00:39:41,671 INFO L226 Difference]: Without dead ends: 32 [2021-10-13 00:39:41,672 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 10711.9ms TimeCoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342 [2021-10-13 00:39:41,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-13 00:39:41,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2021-10-13 00:39:41,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 29 states have internal predecessors, (31), 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 00:39:41,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2021-10-13 00:39:41,678 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 26 [2021-10-13 00:39:41,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:39:41,679 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2021-10-13 00:39:41,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:39:41,679 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2021-10-13 00:39:41,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 00:39:41,680 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:39:41,680 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:39:41,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-13 00:39:41,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-10-13 00:39:41,883 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:39:41,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:39:41,884 INFO L82 PathProgramCache]: Analyzing trace with hash -1350644320, now seen corresponding path program 3 times [2021-10-13 00:39:41,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:39:41,884 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273443596] [2021-10-13 00:39:41,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:39:41,884 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:39:41,894 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:39:41,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1946003383] [2021-10-13 00:39:41,895 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 00:39:41,895 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:39:41,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:39:41,915 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:39:41,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-13 00:39:42,123 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 00:39:42,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:39:42,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 00:39:42,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:39:43,144 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 00:39:43,145 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:39:43,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273443596] [2021-10-13 00:39:43,145 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:39:43,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946003383] [2021-10-13 00:39:43,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946003383] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:39:43,145 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:39:43,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-10-13 00:39:43,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252990889] [2021-10-13 00:39:43,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 00:39:43,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:39:43,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 00:39:43,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-13 00:39:43,147 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 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 00:39:46,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:39:46,450 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2021-10-13 00:39:46,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 00:39:46,450 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 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 26 [2021-10-13 00:39:46,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:39:46,451 INFO L225 Difference]: With dead ends: 32 [2021-10-13 00:39:46,451 INFO L226 Difference]: Without dead ends: 27 [2021-10-13 00:39:46,451 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1311.9ms TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2021-10-13 00:39:46,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-13 00:39:46,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-10-13 00:39:46,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 26 states have internal predecessors, (27), 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 00:39:46,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2021-10-13 00:39:46,474 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 26 [2021-10-13 00:39:46,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:39:46,475 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2021-10-13 00:39:46,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 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 00:39:46,475 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2021-10-13 00:39:46,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 00:39:46,476 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:39:46,476 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:39:46,498 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-10-13 00:39:46,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:39:46,679 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:39:46,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:39:46,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1348797278, now seen corresponding path program 3 times [2021-10-13 00:39:46,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:39:46,680 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648329400] [2021-10-13 00:39:46,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:39:46,680 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:39:46,690 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:39:46,690 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1807116028] [2021-10-13 00:39:46,690 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 00:39:46,691 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:39:46,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:39:46,708 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:39:46,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-13 00:39:46,989 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-13 00:39:46,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:39:46,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 00:39:46,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:39:50,608 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:39:50,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:39:50,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648329400] [2021-10-13 00:39:50,609 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:39:50,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807116028] [2021-10-13 00:39:50,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807116028] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:39:50,609 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:39:50,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-10-13 00:39:50,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93736740] [2021-10-13 00:39:50,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 00:39:50,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:39:50,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 00:39:50,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=154, Unknown=2, NotChecked=0, Total=210 [2021-10-13 00:39:50,610 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 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 00:39:57,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:39:57,504 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2021-10-13 00:39:57,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 00:39:57,504 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 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 26 [2021-10-13 00:39:57,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:39:57,505 INFO L225 Difference]: With dead ends: 38 [2021-10-13 00:39:57,505 INFO L226 Difference]: Without dead ends: 36 [2021-10-13 00:39:57,506 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 7299.9ms TimeCoverageRelationStatistics Valid=174, Invalid=424, Unknown=2, NotChecked=0, Total=600 [2021-10-13 00:39:57,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-13 00:39:57,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2021-10-13 00:39:57,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 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 00:39:57,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2021-10-13 00:39:57,515 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 26 [2021-10-13 00:39:57,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:39:57,515 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2021-10-13 00:39:57,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 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 00:39:57,515 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2021-10-13 00:39:57,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-13 00:39:57,516 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:39:57,516 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:39:57,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-13 00:39:57,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:39:57,732 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:39:57,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:39:57,732 INFO L82 PathProgramCache]: Analyzing trace with hash 920192473, now seen corresponding path program 4 times [2021-10-13 00:39:57,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:39:57,732 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642166377] [2021-10-13 00:39:57,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:39:57,733 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:39:57,740 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:39:57,740 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [96949571] [2021-10-13 00:39:57,740 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 00:39:57,740 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:39:57,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:39:57,751 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:39:57,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-13 00:39:58,010 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 00:39:58,011 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:39:58,012 WARN L261 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 37 conjunts are in the unsatisfiable core [2021-10-13 00:39:58,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:40:52,090 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:40:52,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:40:52,090 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642166377] [2021-10-13 00:40:52,090 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:40:52,090 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96949571] [2021-10-13 00:40:52,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [96949571] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:40:52,091 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:40:52,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-10-13 00:40:52,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377128938] [2021-10-13 00:40:52,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 00:40:52,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:40:52,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 00:40:52,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2021-10-13 00:40:52,093 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand has 16 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 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 00:40:53,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:40:53,402 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2021-10-13 00:40:53,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 00:40:53,403 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 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 31 [2021-10-13 00:40:53,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:40:53,403 INFO L225 Difference]: With dead ends: 43 [2021-10-13 00:40:53,403 INFO L226 Difference]: Without dead ends: 41 [2021-10-13 00:40:53,404 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 1018.6ms TimeCoverageRelationStatistics Valid=150, Invalid=606, Unknown=0, NotChecked=0, Total=756 [2021-10-13 00:40:53,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-10-13 00:40:53,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 37. [2021-10-13 00:40:53,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.0277777777777777) internal successors, (37), 36 states have internal predecessors, (37), 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 00:40:53,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2021-10-13 00:40:53,414 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 31 [2021-10-13 00:40:53,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:40:53,414 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2021-10-13 00:40:53,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 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 00:40:53,414 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2021-10-13 00:40:53,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-13 00:40:53,415 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:40:53,415 INFO L512 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:40:53,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-13 00:40:53,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-10-13 00:40:53,622 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:40:53,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:40:53,623 INFO L82 PathProgramCache]: Analyzing trace with hash 1070802690, now seen corresponding path program 5 times [2021-10-13 00:40:53,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:40:53,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725011555] [2021-10-13 00:40:53,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:40:53,623 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:40:53,634 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:40:53,634 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1416739551] [2021-10-13 00:40:53,634 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 00:40:53,635 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:40:53,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:40:53,637 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:40:53,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-13 00:40:53,950 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-10-13 00:40:53,950 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:40:53,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 51 conjunts are in the unsatisfiable core [2021-10-13 00:40:53,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:41:10,621 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:41:10,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:41:10,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725011555] [2021-10-13 00:41:10,621 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:41:10,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416739551] [2021-10-13 00:41:10,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416739551] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:41:10,622 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:41:10,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2021-10-13 00:41:10,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992185036] [2021-10-13 00:41:10,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 00:41:10,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:41:10,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 00:41:10,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2021-10-13 00:41:10,624 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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 00:41:13,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:41:13,165 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2021-10-13 00:41:13,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 00:41:13,165 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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 00:41:13,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:41:13,166 INFO L225 Difference]: With dead ends: 48 [2021-10-13 00:41:13,166 INFO L226 Difference]: Without dead ends: 46 [2021-10-13 00:41:13,167 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 2289.3ms TimeCoverageRelationStatistics Valid=197, Invalid=993, Unknown=0, NotChecked=0, Total=1190 [2021-10-13 00:41:13,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-10-13 00:41:13,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 42. [2021-10-13 00:41:13,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.024390243902439) internal successors, (42), 41 states have internal predecessors, (42), 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 00:41:13,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2021-10-13 00:41:13,179 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 36 [2021-10-13 00:41:13,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:41:13,180 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2021-10-13 00:41:13,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 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 00:41:13,180 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2021-10-13 00:41:13,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-13 00:41:13,181 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:41:13,181 INFO L512 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:41:13,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-13 00:41:13,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-10-13 00:41:13,395 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:41:13,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:41:13,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1492932473, now seen corresponding path program 6 times [2021-10-13 00:41:13,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:41:13,396 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205618740] [2021-10-13 00:41:13,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:41:13,396 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:41:13,407 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:41:13,407 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1639293834] [2021-10-13 00:41:13,407 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 00:41:13,407 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:41:13,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:41:13,408 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:41:13,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-13 00:41:13,865 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-10-13 00:41:13,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:41:13,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-13 00:41:13,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:41:14,687 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 79 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:41:14,687 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:41:14,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205618740] [2021-10-13 00:41:14,687 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:41:14,688 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639293834] [2021-10-13 00:41:14,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639293834] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:41:14,688 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:41:14,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2021-10-13 00:41:14,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808558274] [2021-10-13 00:41:14,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 00:41:14,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:41:14,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 00:41:14,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-10-13 00:41:14,689 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 19 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 00:41:15,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:41:15,274 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2021-10-13 00:41:15,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 00:41:15,274 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 19 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) Word has length 41 [2021-10-13 00:41:15,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:41:15,275 INFO L225 Difference]: With dead ends: 44 [2021-10-13 00:41:15,275 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 00:41:15,276 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 664.3ms TimeCoverageRelationStatistics Valid=307, Invalid=685, Unknown=0, NotChecked=0, Total=992 [2021-10-13 00:41:15,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 00:41:15,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 00:41:15,276 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 00:41:15,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 00:41:15,276 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2021-10-13 00:41:15,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:41:15,277 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 00:41:15,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 19 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 00:41:15,277 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 00:41:15,277 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 00:41:15,280 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:41:15,280 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:41:15,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-13 00:41:15,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-10-13 00:41:15,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 00:41:15,507 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:41:15,698 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:41:15,785 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:41:15,786 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:42:21,163 WARN L207 SmtUtils]: Spent 1.09 m on a formula simplification. DAG size of input: 237 DAG size of output: 48 [2021-10-13 00:48:37,006 WARN L207 SmtUtils]: Spent 6.26 m on a formula simplification. DAG size of input: 301 DAG size of output: 194 [2021-10-13 00:48:37,011 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2021-10-13 00:48:37,012 INFO L860 garLoopResultBuilder]: At program point L48(lines 20 49) the Hoare annotation is: true [2021-10-13 00:48:37,012 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 00:48:37,012 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 00:48:37,012 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 00:48:37,012 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2021-10-13 00:48:37,012 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 00:48:37,012 INFO L857 garLoopResultBuilder]: For program point L13(lines 13 16) no Hoare annotation was computed. [2021-10-13 00:48:37,012 INFO L853 garLoopResultBuilder]: At program point L13-2(lines 36 37) the Hoare annotation is: (let ((.cse6 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~b~0))) (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (= .cse6 (+ ULTIMATE.start_main_~z~0 (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0)))) (.cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (<= 1 ULTIMATE.start_main_~b~0)) (.cse4 (or (= .cse6 ULTIMATE.start_main_~z~0) (and (not (= ULTIMATE.start_main_~y~0 0)) (= (mod (+ .cse6 (* ULTIMATE.start_main_~z~0 (- 1))) ULTIMATE.start_main_~y~0) 0)))) (.cse5 (<= ULTIMATE.start_main_~b~0 50))) (or (and .cse0 .cse1 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) .cse2 .cse3 .cse4 .cse5 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (and (< 0 (+ ULTIMATE.start_main_~y~0 1)) .cse0 .cse1 .cse2 (= (mod ULTIMATE.start_main_~x~0 (- 2)) 0) .cse3 .cse4) (and (= ULTIMATE.start_main_~z~0 0) .cse0 .cse1 .cse2 (< (* 2 ULTIMATE.start_main_~y~0) 4) .cse3 (< 0 ULTIMATE.start_main_~y~0) .cse4 .cse5)))) [2021-10-13 00:48:37,012 INFO L857 garLoopResultBuilder]: For program point L13-3(lines 13 16) no Hoare annotation was computed. [2021-10-13 00:48:37,012 INFO L857 garLoopResultBuilder]: For program point L9(lines 9 11) no Hoare annotation was computed. [2021-10-13 00:48:37,012 INFO L857 garLoopResultBuilder]: For program point L9-1(lines 9 11) no Hoare annotation was computed. [2021-10-13 00:48:37,013 INFO L860 garLoopResultBuilder]: At program point L13-5(lines 12 18) the Hoare annotation is: true [2021-10-13 00:48:37,013 INFO L857 garLoopResultBuilder]: For program point L9-2(lines 9 11) no Hoare annotation was computed. [2021-10-13 00:48:37,013 INFO L853 garLoopResultBuilder]: At program point L34-2(lines 34 45) the Hoare annotation is: (let ((.cse20 (div ULTIMATE.start_main_~b~0 2))) (let ((.cse39 (div .cse20 2))) (let ((.cse32 (div .cse39 2)) (.cse1 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~b~0)) (.cse10 (div (* ULTIMATE.start_main_~x~0 (- 1)) (- 2)))) (let ((.cse5 (= (mod ULTIMATE.start_main_~x~0 (- 2)) 0)) (.cse4 (= .cse1 (+ ULTIMATE.start_main_~z~0 (* 2 (* .cse10 ULTIMATE.start_main_~y~0))))) (.cse2 (<= 1 ULTIMATE.start_main_~b~0)) (.cse18 (exists ((aux_div_v_ULTIMATE.start_main_~y~0_29_43 Int) (aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 Int)) (let ((.cse42 (* 2 ULTIMATE.start_main_~y~0))) (let ((.cse41 (+ aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 .cse42)) (.cse40 (* 2 aux_div_v_ULTIMATE.start_main_~y~0_29_43))) (and (<= .cse40 .cse41) (< aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 2) (< .cse41 (+ .cse40 1)) (<= 0 (+ aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 .cse42 1)) (<= 0 aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105)))))) (.cse9 (* ULTIMATE.start_main_~z~0 (- 1))) (.cse17 (* (- 1) ULTIMATE.start_main_~z~0)) (.cse19 (not (= (mod ULTIMATE.start_main_~b~0 2) 1))) (.cse26 (not (= (mod .cse32 2) 1))) (.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse27 (= .cse1 (+ ULTIMATE.start_main_~z~0 (* 2 (* ULTIMATE.start_main_~a~0 .cse20))))) (.cse6 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse28 (not (= (mod .cse20 2) 1))) (.cse29 (div .cse32 2)) (.cse30 (not (= (mod .cse39 2) 1))) (.cse31 (< 0 ULTIMATE.start_main_~y~0)) (.cse3 (<= ULTIMATE.start_main_~b~0 50))) (or (and .cse0 (= .cse1 (+ ULTIMATE.start_main_~z~0 (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0))) (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) .cse2 .cse3 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (and (< 0 (+ ULTIMATE.start_main_~y~0 1)) .cse0 (= (mod (div (- ULTIMATE.start_main_~x~0) (- 2)) (- 2)) 0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse4 .cse5 .cse2) (and .cse0 .cse6 .cse5 .cse2 (let ((.cse7 (= .cse10 0))) (or (let ((.cse8 (* (- 2) .cse10 ULTIMATE.start_main_~y~0))) (let ((.cse11 (div (+ .cse1 .cse8 .cse17) .cse10))) (and (not .cse7) (= (mod (+ .cse1 .cse8 .cse9) .cse10) 0) (<= 0 .cse11) (< .cse11 2) (exists ((aux_div_v_ULTIMATE.start_main_~y~0_34_43 Int)) (let ((.cse14 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~b~0)) (.cse15 (div (* ULTIMATE.start_main_~x~0 (- 1)) (- 2)))) (let ((.cse16 (div (+ .cse14 (* (- 2) .cse15 ULTIMATE.start_main_~y~0) (* (- 1) ULTIMATE.start_main_~z~0)) .cse15))) (let ((.cse13 (* 2 aux_div_v_ULTIMATE.start_main_~y~0_34_43)) (.cse12 (+ .cse16 (* 2 ULTIMATE.start_main_~y~0)))) (and (< .cse12 (+ .cse13 1)) (= .cse14 (+ (* 2 (* .cse15 ULTIMATE.start_main_~y~0)) .cse15 (* .cse16 .cse15))) (<= .cse13 .cse12))))))))) (and .cse4 .cse7))) .cse18) (and .cse0 (or (and (= ULTIMATE.start_main_~z~0 0) .cse19 (= ULTIMATE.start_main_~x~0 (* 2 ULTIMATE.start_main_~a~0)) .cse6 (= ULTIMATE.start_main_~y~0 .cse20)) (let ((.cse25 (* (- 1) ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~b~0)) (.cse21 (* (- 2) ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0))) (let ((.cse24 (div (+ (div (+ ULTIMATE.start_main_~z~0 .cse25) (- 2)) .cse21) ULTIMATE.start_main_~a~0))) (and (= (mod (+ (div (+ (* .cse1 (- 1)) ULTIMATE.start_main_~z~0) (- 2)) .cse21) ULTIMATE.start_main_~a~0) 0) .cse6 (= ULTIMATE.start_main_~x~0 (* 4 ULTIMATE.start_main_~a~0)) (exists ((aux_div_v_ULTIMATE.start_main_~y~0_22_37 Int)) (let ((.cse23 (+ (* 2 ULTIMATE.start_main_~y~0) (div (+ (div (+ ULTIMATE.start_main_~z~0 (* (- 1) ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~b~0)) (- 2)) (* (- 2) ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)) ULTIMATE.start_main_~a~0))) (.cse22 (* 2 aux_div_v_ULTIMATE.start_main_~y~0_22_37))) (and (<= .cse22 .cse23) (not (= .cse23 (+ .cse22 1))) (< .cse23 (+ .cse22 2))))) (<= 0 .cse24) (< .cse24 2) (not (= ULTIMATE.start_main_~a~0 0)) (= (mod (+ ULTIMATE.start_main_~z~0 (* 4 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0) .cse25) (- 2)) 0))))) .cse2 .cse18) (and .cse19 .cse26 .cse0 .cse27 .cse6 .cse28 (not (= (mod .cse29 2) 1)) .cse30 (= ULTIMATE.start_main_~y~0 (div .cse29 2)) .cse31 (= (* 32 ULTIMATE.start_main_~a~0) ULTIMATE.start_main_~x~0) .cse3) (let ((.cse37 (div ULTIMATE.start_main_~x~0 2))) (let ((.cse36 (* (- 2) ULTIMATE.start_main_~y~0 .cse37))) (let ((.cse38 (div (+ .cse1 .cse36 .cse17) .cse37))) (and .cse0 (= ULTIMATE.start_main_~y~0 .cse32) .cse27 .cse6 (exists ((aux_div_v_ULTIMATE.start_main_~y~0_37_37 Int)) (let ((.cse34 (* 2 aux_div_v_ULTIMATE.start_main_~y~0_37_37)) (.cse33 (+ (* 2 ULTIMATE.start_main_~y~0) (let ((.cse35 (div ULTIMATE.start_main_~x~0 2))) (div (+ (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~b~0) (* (- 2) ULTIMATE.start_main_~y~0 .cse35) (* (- 1) ULTIMATE.start_main_~z~0)) .cse35))))) (and (< .cse33 (+ 2 .cse34)) (<= .cse34 .cse33) (not (= (+ .cse34 1) .cse33))))) (= (mod (+ .cse1 .cse9 .cse36) .cse37) 0) (not (= .cse37 0)) (= (mod ULTIMATE.start_main_~x~0 2) 0) (< .cse38 2) (< (div (* (div (* ULTIMATE.start_main_~b~0 (- 1)) (- 2)) (- 1)) (- 2)) (+ (* 2 ULTIMATE.start_main_~y~0) 1 .cse38)) .cse31 .cse3)))) (and .cse19 .cse26 .cse0 .cse27 .cse6 .cse28 (= ULTIMATE.start_main_~x~0 (* 16 ULTIMATE.start_main_~a~0)) (= .cse29 ULTIMATE.start_main_~y~0) .cse30 .cse31 .cse3)))))) [2021-10-13 00:48:37,013 INFO L857 garLoopResultBuilder]: For program point L34-3(lines 34 45) no Hoare annotation was computed. [2021-10-13 00:48:37,013 INFO L857 garLoopResultBuilder]: For program point L14(lines 14 15) no Hoare annotation was computed. [2021-10-13 00:48:37,013 INFO L857 garLoopResultBuilder]: For program point L14-1(lines 14 15) no Hoare annotation was computed. [2021-10-13 00:48:37,013 INFO L857 garLoopResultBuilder]: For program point L10(line 10) no Hoare annotation was computed. [2021-10-13 00:48:37,013 INFO L857 garLoopResultBuilder]: For program point L10-2(line 10) no Hoare annotation was computed. [2021-10-13 00:48:37,014 INFO L857 garLoopResultBuilder]: For program point L39(lines 39 42) no Hoare annotation was computed. [2021-10-13 00:48:37,014 INFO L857 garLoopResultBuilder]: For program point L10-4(line 10) no Hoare annotation was computed. [2021-10-13 00:48:37,014 INFO L857 garLoopResultBuilder]: For program point L39-2(lines 39 42) no Hoare annotation was computed. [2021-10-13 00:48:37,017 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 00:48:37,039 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_34_43,QUANTIFIED] [2021-10-13 00:48:37,040 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_34_43,QUANTIFIED] [2021-10-13 00:48:37,041 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] [2021-10-13 00:48:37,041 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-13 00:48:37,041 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-13 00:48:37,041 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-13 00:48:37,042 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] [2021-10-13 00:48:37,042 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-13 00:48:37,042 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-13 00:48:37,042 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_22_37,QUANTIFIED] [2021-10-13 00:48:37,043 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_22_37,QUANTIFIED] [2021-10-13 00:48:37,043 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_22_37,QUANTIFIED] [2021-10-13 00:48:37,043 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] [2021-10-13 00:48:37,043 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-13 00:48:37,044 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-13 00:48:37,044 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-13 00:48:37,044 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] [2021-10-13 00:48:37,044 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-13 00:48:37,044 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-13 00:48:37,045 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_37_37,QUANTIFIED] [2021-10-13 00:48:37,045 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_37_37,QUANTIFIED] [2021-10-13 00:48:37,045 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_37_37,QUANTIFIED] [2021-10-13 00:48:37,051 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_34_43,QUANTIFIED] [2021-10-13 00:48:37,052 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_34_43,QUANTIFIED] [2021-10-13 00:48:37,052 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] [2021-10-13 00:48:37,052 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-13 00:48:37,052 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-13 00:48:37,053 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-13 00:48:37,053 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] [2021-10-13 00:48:37,053 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-13 00:48:37,053 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-13 00:48:37,053 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_22_37,QUANTIFIED] [2021-10-13 00:48:37,054 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_22_37,QUANTIFIED] [2021-10-13 00:48:37,054 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_22_37,QUANTIFIED] [2021-10-13 00:48:37,054 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] [2021-10-13 00:48:37,054 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-13 00:48:37,054 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-13 00:48:37,055 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-13 00:48:37,055 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] [2021-10-13 00:48:37,055 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-13 00:48:37,055 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-13 00:48:37,056 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_37_37,QUANTIFIED] [2021-10-13 00:48:37,056 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_37_37,QUANTIFIED] [2021-10-13 00:48:37,056 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_37_37,QUANTIFIED] [2021-10-13 00:48:37,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:48:37 BoogieIcfgContainer [2021-10-13 00:48:37,062 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 00:48:37,063 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:48:37,063 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:48:37,063 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:48:37,064 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:38:13" (3/4) ... [2021-10-13 00:48:37,067 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 00:48:37,078 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-10-13 00:48:37,079 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 00:48:37,079 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 00:48:37,079 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 00:48:37,106 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((cond == 1 && a * b == z + x * y) && a == x) && 1 <= b) && b <= 50) && b == y) || ((((((0 < y + 1 && cond == 1) && -x / -2 % -2 == 0) && 1 == cond) && a * b == z + 2 * (x * -1 / -2 * y)) && x % -2 == 0) && 1 <= b)) || (((((cond == 1 && 1 <= cond) && x % -2 == 0) && 1 <= b) && (((((!(x * -1 / -2 == 0) && (a * b + -2 * (x * -1 / -2) * y + z * -1) % (x * -1 / -2) == 0) && 0 <= (a * b + -2 * (x * -1 / -2) * y + -1 * z) / (x * -1 / -2)) && (a * b + -2 * (x * -1 / -2) * y + -1 * z) / (x * -1 / -2) < 2) && (\exists aux_div_v_ULTIMATE.start_main_~y~0_34_43 : int :: ((a * b + -2 * (x * -1 / -2) * y + -1 * z) / (x * -1 / -2) + 2 * y < 2 * aux_div_v_ULTIMATE.start_main_~y~0_34_43 + 1 && a * b == 2 * (x * -1 / -2 * y) + x * -1 / -2 + (a * b + -2 * (x * -1 / -2) * y + -1 * z) / (x * -1 / -2) * (x * -1 / -2)) && 2 * aux_div_v_ULTIMATE.start_main_~y~0_34_43 <= (a * b + -2 * (x * -1 / -2) * y + -1 * z) / (x * -1 / -2) + 2 * y)) || (a * b == z + 2 * (x * -1 / -2 * y) && x * -1 / -2 == 0))) && (\exists aux_div_v_ULTIMATE.start_main_~y~0_29_43 : int, aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 : int :: (((2 * aux_div_v_ULTIMATE.start_main_~y~0_29_43 <= aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 + 2 * y && aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 < 2) && aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 + 2 * y < 2 * aux_div_v_ULTIMATE.start_main_~y~0_29_43 + 1) && 0 <= aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 + 2 * y + 1) && 0 <= aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105))) || (((cond == 1 && (((((z == 0 && !(b % 2 == 1)) && x == 2 * a) && 1 <= cond) && y == b / 2) || (((((((((a * b * -1 + z) / -2 + -2 * a * y) % a == 0 && 1 <= cond) && x == 4 * a) && (\exists aux_div_v_ULTIMATE.start_main_~y~0_22_37 : int :: (2 * aux_div_v_ULTIMATE.start_main_~y~0_22_37 <= 2 * y + ((z + -1 * a * b) / -2 + -2 * a * y) / a && !(2 * y + ((z + -1 * a * b) / -2 + -2 * a * y) / a == 2 * aux_div_v_ULTIMATE.start_main_~y~0_22_37 + 1)) && 2 * y + ((z + -1 * a * b) / -2 + -2 * a * y) / a < 2 * aux_div_v_ULTIMATE.start_main_~y~0_22_37 + 2)) && 0 <= ((z + -1 * a * b) / -2 + -2 * a * y) / a) && ((z + -1 * a * b) / -2 + -2 * a * y) / a < 2) && !(a == 0)) && (z + 4 * a * y + -1 * a * b) % -2 == 0))) && 1 <= b) && (\exists aux_div_v_ULTIMATE.start_main_~y~0_29_43 : int, aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 : int :: (((2 * aux_div_v_ULTIMATE.start_main_~y~0_29_43 <= aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 + 2 * y && aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 < 2) && aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 + 2 * y < 2 * aux_div_v_ULTIMATE.start_main_~y~0_29_43 + 1) && 0 <= aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 + 2 * y + 1) && 0 <= aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105))) || (((((((((((!(b % 2 == 1) && !(b / 2 / 2 / 2 % 2 == 1)) && cond == 1) && a * b == z + 2 * (a * (b / 2))) && 1 <= cond) && !(b / 2 % 2 == 1)) && !(b / 2 / 2 / 2 / 2 % 2 == 1)) && !(b / 2 / 2 % 2 == 1)) && y == b / 2 / 2 / 2 / 2 / 2) && 0 < y) && 32 * a == x) && b <= 50)) || (((((((((((cond == 1 && y == b / 2 / 2 / 2) && a * b == z + 2 * (a * (b / 2))) && 1 <= cond) && (\exists aux_div_v_ULTIMATE.start_main_~y~0_37_37 : int :: (2 * y + (a * b + -2 * y * (x / 2) + -1 * z) / (x / 2) < 2 + 2 * aux_div_v_ULTIMATE.start_main_~y~0_37_37 && 2 * aux_div_v_ULTIMATE.start_main_~y~0_37_37 <= 2 * y + (a * b + -2 * y * (x / 2) + -1 * z) / (x / 2)) && !(2 * aux_div_v_ULTIMATE.start_main_~y~0_37_37 + 1 == 2 * y + (a * b + -2 * y * (x / 2) + -1 * z) / (x / 2)))) && (a * b + z * -1 + -2 * y * (x / 2)) % (x / 2) == 0) && !(x / 2 == 0)) && x % 2 == 0) && (a * b + -2 * y * (x / 2) + -1 * z) / (x / 2) < 2) && b * -1 / -2 * -1 / -2 < 2 * y + 1 + (a * b + -2 * y * (x / 2) + -1 * z) / (x / 2)) && 0 < y) && b <= 50)) || ((((((((((!(b % 2 == 1) && !(b / 2 / 2 / 2 % 2 == 1)) && cond == 1) && a * b == z + 2 * (a * (b / 2))) && 1 <= cond) && !(b / 2 % 2 == 1)) && x == 16 * a) && b / 2 / 2 / 2 / 2 == y) && !(b / 2 / 2 % 2 == 1)) && 0 < y) && b <= 50) [2021-10-13 00:48:37,120 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 00:48:37,120 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:48:37,121 INFO L168 Benchmark]: Toolchain (without parser) took 624666.60 ms. Allocated memory was 119.5 MB in the beginning and 144.7 MB in the end (delta: 25.2 MB). Free memory was 82.1 MB in the beginning and 82.7 MB in the end (delta: -572.3 kB). Peak memory consumption was 23.6 MB. Max. memory is 16.1 GB. [2021-10-13 00:48:37,122 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 119.5 MB. Free memory is still 98.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:48:37,122 INFO L168 Benchmark]: CACSL2BoogieTranslator took 270.62 ms. Allocated memory is still 119.5 MB. Free memory was 81.9 MB in the beginning and 96.3 MB in the end (delta: -14.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 00:48:37,123 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.15 ms. Allocated memory is still 119.5 MB. Free memory was 96.3 MB in the beginning and 94.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:48:37,123 INFO L168 Benchmark]: Boogie Preprocessor took 21.45 ms. Allocated memory is still 119.5 MB. Free memory was 94.7 MB in the beginning and 93.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:48:37,123 INFO L168 Benchmark]: RCFGBuilder took 270.92 ms. Allocated memory is still 119.5 MB. Free memory was 93.6 MB in the beginning and 83.1 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 00:48:37,124 INFO L168 Benchmark]: TraceAbstraction took 624006.12 ms. Allocated memory was 119.5 MB in the beginning and 144.7 MB in the end (delta: 25.2 MB). Free memory was 82.6 MB in the beginning and 85.9 MB in the end (delta: -3.2 MB). Peak memory consumption was 83.5 MB. Max. memory is 16.1 GB. [2021-10-13 00:48:37,124 INFO L168 Benchmark]: Witness Printer took 57.77 ms. Allocated memory is still 144.7 MB. Free memory was 85.9 MB in the beginning and 82.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:48:37,127 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 119.5 MB. Free memory is still 98.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 270.62 ms. Allocated memory is still 119.5 MB. Free memory was 81.9 MB in the beginning and 96.3 MB in the end (delta: -14.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.15 ms. Allocated memory is still 119.5 MB. Free memory was 96.3 MB in the beginning and 94.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.45 ms. Allocated memory is still 119.5 MB. Free memory was 94.7 MB in the beginning and 93.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 270.92 ms. Allocated memory is still 119.5 MB. Free memory was 93.6 MB in the beginning and 83.1 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 624006.12 ms. Allocated memory was 119.5 MB in the beginning and 144.7 MB in the end (delta: 25.2 MB). Free memory was 82.6 MB in the beginning and 85.9 MB in the end (delta: -3.2 MB). Peak memory consumption was 83.5 MB. Max. memory is 16.1 GB. * Witness Printer took 57.77 ms. Allocated memory is still 144.7 MB. Free memory was 85.9 MB in the beginning and 82.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_34_43,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_34_43,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_22_37,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_22_37,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_22_37,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_37_37,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_37_37,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_37_37,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_34_43,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_34_43,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_22_37,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_22_37,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_22_37,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_37_37,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_37_37,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_37_37,QUANTIFIED] * 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: 15]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 15]: 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, 23 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 623898.7ms, OverallIterations: 16, TraceHistogramMax: 7, EmptinessCheckTime: 19.6ms, AutomataDifference: 49364.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 441507.7ms, InitialAbstractionConstructionTime: 8.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 185 SDtfs, 557 SDslu, 504 SDs, 0 SdLazy, 1682 SolverSat, 189 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 28534.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 439 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 927 ImplicationChecksByTransitivity, 26516.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=15, InterpolantAutomatonStates: 168, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 136.5ms AutomataMinimizationTime, 16 MinimizatonAttempts, 83 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 29 NumberOfFragments, 1081 HoareAnnotationTreeSize, 4 FomulaSimplifications, 59981 FormulaSimplificationTreeSizeReduction, 280.4ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 15805 FormulaSimplificationTreeSizeReductionInter, 441220.8ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 102.7ms SsaConstructionTime, 441.6ms SatisfiabilityAnalysisTime, 126214.3ms InterpolantComputationTime, 357 NumberOfCodeBlocks, 344 NumberOfCodeBlocksAsserted, 37 NumberOfCheckSat, 341 ConstructedInterpolants, 11 QuantifiedInterpolants, 5295 SizeOfPredicates, 126 NumberOfNonLiveVariables, 1382 ConjunctsInSsa, 411 ConjunctsInUnsatCore, 16 InterpolantComputations, 4 PerfectInterpolantSequences, 114/291 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 2 specifications checked. All of them hold - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: ((((((((cond == 1 && a * b == z + x * y) && a == x) && 1 == cond) && 1 <= b) && (a * b == z || (!(y == 0) && (a * b + z * -1) % y == 0))) && b <= 50) && b == y) || ((((((0 < y + 1 && cond == 1) && a * b == z + x * y) && 1 == cond) && x % -2 == 0) && 1 <= b) && (a * b == z || (!(y == 0) && (a * b + z * -1) % y == 0)))) || ((((((((z == 0 && cond == 1) && a * b == z + x * y) && 1 == cond) && 2 * y < 4) && 1 <= b) && 0 < y) && (a * b == z || (!(y == 0) && (a * b + z * -1) % y == 0))) && b <= 50) - InvariantResult [Line: 34]: Loop Invariant [2021-10-13 00:48:37,141 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_34_43,QUANTIFIED] [2021-10-13 00:48:37,142 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_34_43,QUANTIFIED] [2021-10-13 00:48:37,142 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] [2021-10-13 00:48:37,142 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-13 00:48:37,142 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-13 00:48:37,142 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-13 00:48:37,143 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] [2021-10-13 00:48:37,143 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-13 00:48:37,143 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-13 00:48:37,143 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_22_37,QUANTIFIED] [2021-10-13 00:48:37,143 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_22_37,QUANTIFIED] [2021-10-13 00:48:37,144 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_22_37,QUANTIFIED] [2021-10-13 00:48:37,144 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] [2021-10-13 00:48:37,144 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-13 00:48:37,144 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-13 00:48:37,144 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-13 00:48:37,145 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] [2021-10-13 00:48:37,145 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-13 00:48:37,145 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-13 00:48:37,145 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_37_37,QUANTIFIED] [2021-10-13 00:48:37,145 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_37_37,QUANTIFIED] [2021-10-13 00:48:37,146 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_37_37,QUANTIFIED] [2021-10-13 00:48:37,149 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_34_43,QUANTIFIED] [2021-10-13 00:48:37,149 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_34_43,QUANTIFIED] [2021-10-13 00:48:37,149 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] [2021-10-13 00:48:37,149 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-13 00:48:37,150 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-13 00:48:37,150 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-13 00:48:37,150 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] [2021-10-13 00:48:37,150 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-13 00:48:37,150 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-13 00:48:37,150 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_22_37,QUANTIFIED] [2021-10-13 00:48:37,151 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_22_37,QUANTIFIED] [2021-10-13 00:48:37,151 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_22_37,QUANTIFIED] [2021-10-13 00:48:37,151 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] [2021-10-13 00:48:37,151 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-13 00:48:37,152 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-13 00:48:37,152 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-13 00:48:37,152 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] [2021-10-13 00:48:37,152 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-13 00:48:37,152 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-13 00:48:37,152 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_37_37,QUANTIFIED] [2021-10-13 00:48:37,153 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_37_37,QUANTIFIED] [2021-10-13 00:48:37,153 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_37_37,QUANTIFIED] Derived loop invariant: ((((((((((cond == 1 && a * b == z + x * y) && a == x) && 1 <= b) && b <= 50) && b == y) || ((((((0 < y + 1 && cond == 1) && -x / -2 % -2 == 0) && 1 == cond) && a * b == z + 2 * (x * -1 / -2 * y)) && x % -2 == 0) && 1 <= b)) || (((((cond == 1 && 1 <= cond) && x % -2 == 0) && 1 <= b) && (((((!(x * -1 / -2 == 0) && (a * b + -2 * (x * -1 / -2) * y + z * -1) % (x * -1 / -2) == 0) && 0 <= (a * b + -2 * (x * -1 / -2) * y + -1 * z) / (x * -1 / -2)) && (a * b + -2 * (x * -1 / -2) * y + -1 * z) / (x * -1 / -2) < 2) && (\exists aux_div_v_ULTIMATE.start_main_~y~0_34_43 : int :: ((a * b + -2 * (x * -1 / -2) * y + -1 * z) / (x * -1 / -2) + 2 * y < 2 * aux_div_v_ULTIMATE.start_main_~y~0_34_43 + 1 && a * b == 2 * (x * -1 / -2 * y) + x * -1 / -2 + (a * b + -2 * (x * -1 / -2) * y + -1 * z) / (x * -1 / -2) * (x * -1 / -2)) && 2 * aux_div_v_ULTIMATE.start_main_~y~0_34_43 <= (a * b + -2 * (x * -1 / -2) * y + -1 * z) / (x * -1 / -2) + 2 * y)) || (a * b == z + 2 * (x * -1 / -2 * y) && x * -1 / -2 == 0))) && (\exists aux_div_v_ULTIMATE.start_main_~y~0_29_43 : int, aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 : int :: (((2 * aux_div_v_ULTIMATE.start_main_~y~0_29_43 <= aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 + 2 * y && aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 < 2) && aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 + 2 * y < 2 * aux_div_v_ULTIMATE.start_main_~y~0_29_43 + 1) && 0 <= aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 + 2 * y + 1) && 0 <= aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105))) || (((cond == 1 && (((((z == 0 && !(b % 2 == 1)) && x == 2 * a) && 1 <= cond) && y == b / 2) || (((((((((a * b * -1 + z) / -2 + -2 * a * y) % a == 0 && 1 <= cond) && x == 4 * a) && (\exists aux_div_v_ULTIMATE.start_main_~y~0_22_37 : int :: (2 * aux_div_v_ULTIMATE.start_main_~y~0_22_37 <= 2 * y + ((z + -1 * a * b) / -2 + -2 * a * y) / a && !(2 * y + ((z + -1 * a * b) / -2 + -2 * a * y) / a == 2 * aux_div_v_ULTIMATE.start_main_~y~0_22_37 + 1)) && 2 * y + ((z + -1 * a * b) / -2 + -2 * a * y) / a < 2 * aux_div_v_ULTIMATE.start_main_~y~0_22_37 + 2)) && 0 <= ((z + -1 * a * b) / -2 + -2 * a * y) / a) && ((z + -1 * a * b) / -2 + -2 * a * y) / a < 2) && !(a == 0)) && (z + 4 * a * y + -1 * a * b) % -2 == 0))) && 1 <= b) && (\exists aux_div_v_ULTIMATE.start_main_~y~0_29_43 : int, aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 : int :: (((2 * aux_div_v_ULTIMATE.start_main_~y~0_29_43 <= aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 + 2 * y && aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 < 2) && aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 + 2 * y < 2 * aux_div_v_ULTIMATE.start_main_~y~0_29_43 + 1) && 0 <= aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 + 2 * y + 1) && 0 <= aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105))) || (((((((((((!(b % 2 == 1) && !(b / 2 / 2 / 2 % 2 == 1)) && cond == 1) && a * b == z + 2 * (a * (b / 2))) && 1 <= cond) && !(b / 2 % 2 == 1)) && !(b / 2 / 2 / 2 / 2 % 2 == 1)) && !(b / 2 / 2 % 2 == 1)) && y == b / 2 / 2 / 2 / 2 / 2) && 0 < y) && 32 * a == x) && b <= 50)) || (((((((((((cond == 1 && y == b / 2 / 2 / 2) && a * b == z + 2 * (a * (b / 2))) && 1 <= cond) && (\exists aux_div_v_ULTIMATE.start_main_~y~0_37_37 : int :: (2 * y + (a * b + -2 * y * (x / 2) + -1 * z) / (x / 2) < 2 + 2 * aux_div_v_ULTIMATE.start_main_~y~0_37_37 && 2 * aux_div_v_ULTIMATE.start_main_~y~0_37_37 <= 2 * y + (a * b + -2 * y * (x / 2) + -1 * z) / (x / 2)) && !(2 * aux_div_v_ULTIMATE.start_main_~y~0_37_37 + 1 == 2 * y + (a * b + -2 * y * (x / 2) + -1 * z) / (x / 2)))) && (a * b + z * -1 + -2 * y * (x / 2)) % (x / 2) == 0) && !(x / 2 == 0)) && x % 2 == 0) && (a * b + -2 * y * (x / 2) + -1 * z) / (x / 2) < 2) && b * -1 / -2 * -1 / -2 < 2 * y + 1 + (a * b + -2 * y * (x / 2) + -1 * z) / (x / 2)) && 0 < y) && b <= 50)) || ((((((((((!(b % 2 == 1) && !(b / 2 / 2 / 2 % 2 == 1)) && cond == 1) && a * b == z + 2 * (a * (b / 2))) && 1 <= cond) && !(b / 2 % 2 == 1)) && x == 16 * a) && b / 2 / 2 / 2 / 2 == y) && !(b / 2 / 2 % 2 == 1)) && 0 < y) && b <= 50) - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-13 00:48:37,388 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2021-10-13 00:48:37,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a694924-44e7-4b2f-9c04-4d55a38b3b7b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...