./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound2.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_f2ba68e4-562c-406b-b834-0bc9346d9812/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ba68e4-562c-406b-b834-0bc9346d9812/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_f2ba68e4-562c-406b-b834-0bc9346d9812/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ba68e4-562c-406b-b834-0bc9346d9812/bin/uautomizer-WNIpwEf4Nt/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ba68e4-562c-406b-b834-0bc9346d9812/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_f2ba68e4-562c-406b-b834-0bc9346d9812/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 88858f97a31c3235966ebf494d20d53d69d426d8 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 01:05:14,631 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 01:05:14,634 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 01:05:14,703 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 01:05:14,703 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 01:05:14,705 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 01:05:14,710 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 01:05:14,715 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 01:05:14,718 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 01:05:14,727 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 01:05:14,728 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 01:05:14,731 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 01:05:14,731 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 01:05:14,735 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 01:05:14,739 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 01:05:14,748 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 01:05:14,749 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 01:05:14,750 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 01:05:14,752 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 01:05:14,755 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 01:05:14,757 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 01:05:14,758 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 01:05:14,760 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 01:05:14,761 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 01:05:14,765 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 01:05:14,766 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 01:05:14,766 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 01:05:14,767 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 01:05:14,768 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 01:05:14,769 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 01:05:14,770 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 01:05:14,782 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 01:05:14,783 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 01:05:14,785 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 01:05:14,786 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 01:05:14,787 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 01:05:14,788 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 01:05:14,788 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 01:05:14,789 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 01:05:14,790 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 01:05:14,792 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 01:05:14,794 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ba68e4-562c-406b-b834-0bc9346d9812/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-13 01:05:14,843 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 01:05:14,844 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 01:05:14,845 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 01:05:14,845 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 01:05:14,847 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 01:05:14,847 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 01:05:14,847 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 01:05:14,848 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 01:05:14,848 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 01:05:14,848 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 01:05:14,849 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 01:05:14,850 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 01:05:14,850 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 01:05:14,850 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 01:05:14,851 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 01:05:14,851 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 01:05:14,851 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 01:05:14,851 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 01:05:14,852 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 01:05:14,852 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 01:05:14,852 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 01:05:14,852 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 01:05:14,853 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 01:05:14,853 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 01:05:14,853 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 01:05:14,854 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 01:05:14,854 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 01:05:14,854 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 01:05:14,854 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 01:05:14,855 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 01:05:14,855 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_f2ba68e4-562c-406b-b834-0bc9346d9812/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ba68e4-562c-406b-b834-0bc9346d9812/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 88858f97a31c3235966ebf494d20d53d69d426d8 [2021-10-13 01:05:15,100 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 01:05:15,128 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 01:05:15,132 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 01:05:15,134 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 01:05:15,135 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 01:05:15,136 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ba68e4-562c-406b-b834-0bc9346d9812/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound2.c [2021-10-13 01:05:15,237 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ba68e4-562c-406b-b834-0bc9346d9812/bin/uautomizer-WNIpwEf4Nt/data/e23e39ee7/e52e3ac9a6f340bf973e3cd048682928/FLAG3ae93f87c [2021-10-13 01:05:15,868 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 01:05:15,869 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ba68e4-562c-406b-b834-0bc9346d9812/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound2.c [2021-10-13 01:05:15,883 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ba68e4-562c-406b-b834-0bc9346d9812/bin/uautomizer-WNIpwEf4Nt/data/e23e39ee7/e52e3ac9a6f340bf973e3cd048682928/FLAG3ae93f87c [2021-10-13 01:05:16,214 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ba68e4-562c-406b-b834-0bc9346d9812/bin/uautomizer-WNIpwEf4Nt/data/e23e39ee7/e52e3ac9a6f340bf973e3cd048682928 [2021-10-13 01:05:16,217 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 01:05:16,219 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 01:05:16,227 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 01:05:16,227 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 01:05:16,230 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 01:05:16,231 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:05:16" (1/1) ... [2021-10-13 01:05:16,233 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11045bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:05:16, skipping insertion in model container [2021-10-13 01:05:16,234 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:05:16" (1/1) ... [2021-10-13 01:05:16,245 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 01:05:16,263 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 01:05:16,433 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_f2ba68e4-562c-406b-b834-0bc9346d9812/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound2.c[537,550] [2021-10-13 01:05:16,455 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:05:16,464 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 01:05:16,475 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_f2ba68e4-562c-406b-b834-0bc9346d9812/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound2.c[537,550] [2021-10-13 01:05:16,481 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:05:16,495 INFO L208 MainTranslator]: Completed translation [2021-10-13 01:05:16,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:05:16 WrapperNode [2021-10-13 01:05:16,496 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 01:05:16,497 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 01:05:16,498 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 01:05:16,498 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 01:05:16,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:05:16" (1/1) ... [2021-10-13 01:05:16,519 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:05:16" (1/1) ... [2021-10-13 01:05:16,552 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 01:05:16,553 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 01:05:16,553 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 01:05:16,553 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 01:05:16,563 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:05:16" (1/1) ... [2021-10-13 01:05:16,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:05:16" (1/1) ... [2021-10-13 01:05:16,578 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:05:16" (1/1) ... [2021-10-13 01:05:16,579 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:05:16" (1/1) ... [2021-10-13 01:05:16,583 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:05:16" (1/1) ... [2021-10-13 01:05:16,592 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:05:16" (1/1) ... [2021-10-13 01:05:16,600 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:05:16" (1/1) ... [2021-10-13 01:05:16,603 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 01:05:16,607 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 01:05:16,611 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 01:05:16,611 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 01:05:16,612 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:05:16" (1/1) ... [2021-10-13 01:05:16,627 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 01:05:16,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ba68e4-562c-406b-b834-0bc9346d9812/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:05:16,653 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ba68e4-562c-406b-b834-0bc9346d9812/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 01:05:16,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ba68e4-562c-406b-b834-0bc9346d9812/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 01:05:16,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 01:05:16,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 01:05:16,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 01:05:16,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 01:05:17,081 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 01:05:17,082 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2021-10-13 01:05:17,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:05:17 BoogieIcfgContainer [2021-10-13 01:05:17,084 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 01:05:17,087 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 01:05:17,087 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 01:05:17,092 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 01:05:17,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:05:16" (1/3) ... [2021-10-13 01:05:17,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@153fff28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:05:17, skipping insertion in model container [2021-10-13 01:05:17,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:05:16" (2/3) ... [2021-10-13 01:05:17,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@153fff28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:05:17, skipping insertion in model container [2021-10-13 01:05:17,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:05:17" (3/3) ... [2021-10-13 01:05:17,095 INFO L111 eAbstractionObserver]: Analyzing ICFG prodbin-ll_valuebound2.c [2021-10-13 01:05:17,102 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 01:05:17,102 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-13 01:05:17,162 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 01:05:17,170 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 01:05:17,171 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-13 01:05:17,202 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 01:05:17,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 01:05:17,208 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:05:17,209 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:05:17,210 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:05:17,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:05:17,217 INFO L82 PathProgramCache]: Analyzing trace with hash 330581779, now seen corresponding path program 1 times [2021-10-13 01:05:17,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:05:17,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948661671] [2021-10-13 01:05:17,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:05:17,231 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:05:17,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:05:17,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:05:17,444 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:05:17,445 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948661671] [2021-10-13 01:05:17,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948661671] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:05:17,446 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:05:17,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 01:05:17,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079908315] [2021-10-13 01:05:17,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 01:05:17,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:05:17,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 01:05:17,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 01:05:17,477 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 01:05:17,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:05:17,498 INFO L93 Difference]: Finished difference Result 43 states and 58 transitions. [2021-10-13 01:05:17,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 01:05:17,500 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 01:05:17,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:05:17,510 INFO L225 Difference]: With dead ends: 43 [2021-10-13 01:05:17,511 INFO L226 Difference]: Without dead ends: 19 [2021-10-13 01:05:17,514 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 01:05:17,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-10-13 01:05:17,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-10-13 01:05:17,551 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 01:05:17,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2021-10-13 01:05:17,554 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 11 [2021-10-13 01:05:17,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:05:17,554 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2021-10-13 01:05:17,555 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 01:05:17,555 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2021-10-13 01:05:17,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 01:05:17,556 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:05:17,556 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:05:17,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 01:05:17,557 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:05:17,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:05:17,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1507472743, now seen corresponding path program 1 times [2021-10-13 01:05:17,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:05:17,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587923244] [2021-10-13 01:05:17,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:05:17,560 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:05:17,593 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 01:05:17,596 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1218355228] [2021-10-13 01:05:17,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:05:17,597 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:05:17,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ba68e4-562c-406b-b834-0bc9346d9812/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:05:17,600 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ba68e4-562c-406b-b834-0bc9346d9812/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:05:17,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ba68e4-562c-406b-b834-0bc9346d9812/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 01:05:17,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:05:17,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 01:05:17,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:05:17,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:05:17,907 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:05:17,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587923244] [2021-10-13 01:05:17,908 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 01:05:17,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218355228] [2021-10-13 01:05:17,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218355228] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:05:17,909 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:05:17,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 01:05:17,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386752744] [2021-10-13 01:05:17,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 01:05:17,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:05:17,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 01:05:17,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 01:05:17,916 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 01:05:18,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:05:18,032 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2021-10-13 01:05:18,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 01:05:18,033 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 01:05:18,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:05:18,034 INFO L225 Difference]: With dead ends: 32 [2021-10-13 01:05:18,034 INFO L226 Difference]: Without dead ends: 30 [2021-10-13 01:05:18,035 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 66.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 01:05:18,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-10-13 01:05:18,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 21. [2021-10-13 01:05:18,040 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 01:05:18,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2021-10-13 01:05:18,041 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 11 [2021-10-13 01:05:18,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:05:18,042 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2021-10-13 01:05:18,042 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 01:05:18,042 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2021-10-13 01:05:18,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 01:05:18,043 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:05:18,043 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:05:18,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ba68e4-562c-406b-b834-0bc9346d9812/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 01:05:18,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ba68e4-562c-406b-b834-0bc9346d9812/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:05:18,263 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:05:18,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:05:18,264 INFO L82 PathProgramCache]: Analyzing trace with hash -937526112, now seen corresponding path program 1 times [2021-10-13 01:05:18,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:05:18,265 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153929438] [2021-10-13 01:05:18,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:05:18,265 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:05:18,293 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 01:05:18,301 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1637520854] [2021-10-13 01:05:18,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:05:18,304 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:05:18,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ba68e4-562c-406b-b834-0bc9346d9812/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:05:18,306 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ba68e4-562c-406b-b834-0bc9346d9812/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:05:18,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ba68e4-562c-406b-b834-0bc9346d9812/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 01:05:18,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:05:18,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 01:05:18,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:05:18,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:05:18,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:05:18,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153929438] [2021-10-13 01:05:18,566 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 01:05:18,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637520854] [2021-10-13 01:05:18,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637520854] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:05:18,566 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:05:18,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 01:05:18,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117193977] [2021-10-13 01:05:18,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 01:05:18,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:05:18,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 01:05:18,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 01:05:18,569 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 01:05:18,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:05:18,652 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2021-10-13 01:05:18,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 01:05:18,653 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 01:05:18,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:05:18,653 INFO L225 Difference]: With dead ends: 28 [2021-10-13 01:05:18,654 INFO L226 Difference]: Without dead ends: 24 [2021-10-13 01:05:18,654 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.1ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 01:05:18,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-13 01:05:18,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2021-10-13 01:05:18,658 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 01:05:18,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2021-10-13 01:05:18,662 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 14 [2021-10-13 01:05:18,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:05:18,662 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2021-10-13 01:05:18,663 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 01:05:18,663 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2021-10-13 01:05:18,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 01:05:18,664 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:05:18,664 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:05:18,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ba68e4-562c-406b-b834-0bc9346d9812/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-13 01:05:18,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ba68e4-562c-406b-b834-0bc9346d9812/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-10-13 01:05:18,865 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:05:18,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:05:18,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1030171456, now seen corresponding path program 1 times [2021-10-13 01:05:18,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:05:18,866 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110374074] [2021-10-13 01:05:18,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:05:18,867 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:05:18,887 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 01:05:18,887 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1469861194] [2021-10-13 01:05:18,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:05:18,887 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:05:18,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ba68e4-562c-406b-b834-0bc9346d9812/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:05:18,889 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ba68e4-562c-406b-b834-0bc9346d9812/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:05:18,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ba68e4-562c-406b-b834-0bc9346d9812/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-13 01:05:18,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:05:18,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 37 conjunts are in the unsatisfiable core [2021-10-13 01:05:18,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:05:20,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:05:20,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:05:20,164 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110374074] [2021-10-13 01:05:20,164 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 01:05:20,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469861194] [2021-10-13 01:05:20,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1469861194] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:05:20,165 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 01:05:20,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-10-13 01:05:20,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870559043] [2021-10-13 01:05:20,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 01:05:20,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:05:20,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 01:05:20,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-10-13 01:05:20,174 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 13 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 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 01:05:20,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:05:20,619 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2021-10-13 01:05:20,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 01:05:20,620 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 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 01:05:20,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:05:20,621 INFO L225 Difference]: With dead ends: 42 [2021-10-13 01:05:20,621 INFO L226 Difference]: Without dead ends: 25 [2021-10-13 01:05:20,621 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 485.7ms TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2021-10-13 01:05:20,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-10-13 01:05:20,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2021-10-13 01:05:20,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 22 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 01:05:20,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2021-10-13 01:05:20,629 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 16 [2021-10-13 01:05:20,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:05:20,630 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2021-10-13 01:05:20,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 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 01:05:20,630 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2021-10-13 01:05:20,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 01:05:20,631 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:05:20,632 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:05:20,657 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ba68e4-562c-406b-b834-0bc9346d9812/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-13 01:05:20,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ba68e4-562c-406b-b834-0bc9346d9812/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:05:20,833 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:05:20,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:05:20,835 INFO L82 PathProgramCache]: Analyzing trace with hash 1032018498, now seen corresponding path program 1 times [2021-10-13 01:05:20,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:05:20,835 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411982161] [2021-10-13 01:05:20,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:05:20,836 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:05:20,857 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 01:05:20,858 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1914746978] [2021-10-13 01:05:20,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:05:20,858 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:05:20,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ba68e4-562c-406b-b834-0bc9346d9812/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:05:20,859 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ba68e4-562c-406b-b834-0bc9346d9812/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:05:20,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ba68e4-562c-406b-b834-0bc9346d9812/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-13 01:05:20,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:05:20,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-13 01:05:21,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:05:21,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:05:21,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:05:21,915 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411982161] [2021-10-13 01:05:21,915 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 01:05:21,915 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914746978] [2021-10-13 01:05:21,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914746978] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:05:21,916 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 01:05:21,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-10-13 01:05:21,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779053545] [2021-10-13 01:05:21,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 01:05:21,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:05:21,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 01:05:21,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-10-13 01:05:21,918 INFO L87 Difference]: Start difference. First operand 23 states and 24 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 01:05:22,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:05:22,177 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2021-10-13 01:05:22,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 01:05:22,186 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 01:05:22,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:05:22,187 INFO L225 Difference]: With dead ends: 37 [2021-10-13 01:05:22,188 INFO L226 Difference]: Without dead ends: 31 [2021-10-13 01:05:22,188 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 218.3ms TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2021-10-13 01:05:22,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-10-13 01:05:22,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 27. [2021-10-13 01:05:22,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 25 states have (on average 1.12) internal successors, (28), 26 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 01:05:22,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2021-10-13 01:05:22,194 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 16 [2021-10-13 01:05:22,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:05:22,195 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2021-10-13 01:05:22,195 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 01:05:22,195 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2021-10-13 01:05:22,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 01:05:22,196 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:05:22,196 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:05:22,236 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ba68e4-562c-406b-b834-0bc9346d9812/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-13 01:05:22,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ba68e4-562c-406b-b834-0bc9346d9812/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:05:22,396 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:05:22,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:05:22,397 INFO L82 PathProgramCache]: Analyzing trace with hash -577897161, now seen corresponding path program 1 times [2021-10-13 01:05:22,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:05:22,397 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738140062] [2021-10-13 01:05:22,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:05:22,398 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:05:22,413 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 01:05:22,414 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [906506414] [2021-10-13 01:05:22,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:05:22,414 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:05:22,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ba68e4-562c-406b-b834-0bc9346d9812/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:05:22,415 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ba68e4-562c-406b-b834-0bc9346d9812/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:05:22,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ba68e4-562c-406b-b834-0bc9346d9812/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-13 01:05:22,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:05:22,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 43 conjunts are in the unsatisfiable core [2021-10-13 01:05:22,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:05:23,401 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 01:05:23,402 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:05:23,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738140062] [2021-10-13 01:05:23,402 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 01:05:23,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906506414] [2021-10-13 01:05:23,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906506414] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:05:23,403 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 01:05:23,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-10-13 01:05:23,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208447108] [2021-10-13 01:05:23,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 01:05:23,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:05:23,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 01:05:23,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-10-13 01:05:23,405 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:05:23,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:05:23,978 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2021-10-13 01:05:23,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 01:05:23,979 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-13 01:05:23,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:05:23,979 INFO L225 Difference]: With dead ends: 34 [2021-10-13 01:05:23,980 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 01:05:23,980 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 635.2ms TimeCoverageRelationStatistics Valid=126, Invalid=336, Unknown=0, NotChecked=0, Total=462 [2021-10-13 01:05:23,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 01:05:23,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 01:05:23,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:05:23,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 01:05:23,981 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2021-10-13 01:05:23,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:05:23,982 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 01:05:23,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:05:23,982 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 01:05:23,982 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 01:05:23,985 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 01:05:23,986 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 01:05:24,025 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ba68e4-562c-406b-b834-0bc9346d9812/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-13 01:05:24,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ba68e4-562c-406b-b834-0bc9346d9812/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-13 01:05:24,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 01:05:24,199 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:05:24,230 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:05:24,272 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:05:24,277 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:05:25,042 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2021-10-13 01:05:25,042 INFO L860 garLoopResultBuilder]: At program point L48(lines 20 49) the Hoare annotation is: true [2021-10-13 01:05:25,042 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 01:05:25,042 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 01:05:25,043 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 01:05:25,043 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2021-10-13 01:05:25,043 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 01:05:25,043 INFO L857 garLoopResultBuilder]: For program point L13(lines 13 16) no Hoare annotation was computed. [2021-10-13 01:05:25,043 INFO L853 garLoopResultBuilder]: At program point L13-2(lines 36 37) the Hoare annotation is: (let ((.cse5 (* 2 ULTIMATE.start_main_~a~0))) (let ((.cse3 (div ULTIMATE.start_main_~b~0 2)) (.cse9 (= ULTIMATE.start_main_~x~0 .cse5)) (.cse1 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse8 (mod ULTIMATE.start_main_~b~0 2)) (.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse2 (<= ULTIMATE.start_main_~a~0 2)) (.cse10 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse4 (<= ULTIMATE.start_main_~b~0 2)) (.cse6 (<= 1 ULTIMATE.start_main_~b~0)) (.cse7 (<= 0 ULTIMATE.start_main_~a~0))) (or (and .cse0 .cse1 .cse2 (<= 1 (mod .cse3 2)) (= ULTIMATE.start_main_~x~0 (* 4 ULTIMATE.start_main_~a~0)) .cse4 (= ULTIMATE.start_main_~z~0 .cse5) .cse6 (= ULTIMATE.start_main_~y~0 (div (+ (- 1) .cse3) 2)) .cse7) (and (= ULTIMATE.start_main_~z~0 0) (not (= .cse8 1)) .cse0 .cse9 .cse2 (= ULTIMATE.start_main_~y~0 .cse3) .cse10 .cse4 .cse6 .cse7) (and .cse0 .cse9 .cse1 .cse2 .cse4 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~z~0) .cse6 (<= 1 .cse8) .cse7 (= ULTIMATE.start_main_~y~0 (div (+ (- 1) ULTIMATE.start_main_~b~0) 2))) (and .cse0 (= (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~b~0) (+ 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 .cse10 .cse4 .cse6 .cse7 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0))))) [2021-10-13 01:05:25,044 INFO L857 garLoopResultBuilder]: For program point L13-3(lines 13 16) no Hoare annotation was computed. [2021-10-13 01:05:25,044 INFO L857 garLoopResultBuilder]: For program point L9(lines 9 11) no Hoare annotation was computed. [2021-10-13 01:05:25,044 INFO L857 garLoopResultBuilder]: For program point L9-1(lines 9 11) no Hoare annotation was computed. [2021-10-13 01:05:25,044 INFO L860 garLoopResultBuilder]: At program point L13-5(lines 12 18) the Hoare annotation is: true [2021-10-13 01:05:25,044 INFO L857 garLoopResultBuilder]: For program point L9-2(lines 9 11) no Hoare annotation was computed. [2021-10-13 01:05:25,044 INFO L853 garLoopResultBuilder]: At program point L34-2(lines 34 45) the Hoare annotation is: (let ((.cse5 (* 2 ULTIMATE.start_main_~a~0))) (let ((.cse3 (div ULTIMATE.start_main_~b~0 2)) (.cse9 (= ULTIMATE.start_main_~x~0 .cse5)) (.cse1 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse8 (mod ULTIMATE.start_main_~b~0 2)) (.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse2 (<= ULTIMATE.start_main_~a~0 2)) (.cse4 (<= ULTIMATE.start_main_~b~0 2)) (.cse6 (<= 1 ULTIMATE.start_main_~b~0)) (.cse7 (<= 0 ULTIMATE.start_main_~a~0))) (or (and .cse0 .cse1 .cse2 (<= 1 (mod .cse3 2)) (= ULTIMATE.start_main_~x~0 (* 4 ULTIMATE.start_main_~a~0)) .cse4 (= ULTIMATE.start_main_~z~0 .cse5) .cse6 (= ULTIMATE.start_main_~y~0 (div (+ (- 1) .cse3) 2)) .cse7) (and (= ULTIMATE.start_main_~z~0 0) (not (= .cse8 1)) .cse0 .cse9 .cse1 .cse2 (= ULTIMATE.start_main_~y~0 .cse3) .cse4 .cse6 .cse7) (and .cse0 .cse9 .cse1 .cse2 .cse4 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~z~0) .cse6 (<= 1 .cse8) .cse7 (= ULTIMATE.start_main_~y~0 (div (+ (- 1) ULTIMATE.start_main_~b~0) 2))) (and .cse0 (= (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~b~0) (+ 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 .cse4 .cse6 .cse7 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0))))) [2021-10-13 01:05:25,045 INFO L857 garLoopResultBuilder]: For program point L34-3(lines 34 45) no Hoare annotation was computed. [2021-10-13 01:05:25,045 INFO L857 garLoopResultBuilder]: For program point L14(lines 14 15) no Hoare annotation was computed. [2021-10-13 01:05:25,045 INFO L857 garLoopResultBuilder]: For program point L14-1(lines 14 15) no Hoare annotation was computed. [2021-10-13 01:05:25,045 INFO L857 garLoopResultBuilder]: For program point L10(line 10) no Hoare annotation was computed. [2021-10-13 01:05:25,045 INFO L857 garLoopResultBuilder]: For program point L10-2(line 10) no Hoare annotation was computed. [2021-10-13 01:05:25,045 INFO L857 garLoopResultBuilder]: For program point L39(lines 39 42) no Hoare annotation was computed. [2021-10-13 01:05:25,045 INFO L857 garLoopResultBuilder]: For program point L10-4(line 10) no Hoare annotation was computed. [2021-10-13 01:05:25,046 INFO L857 garLoopResultBuilder]: For program point L39-2(lines 39 42) no Hoare annotation was computed. [2021-10-13 01:05:25,051 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 01:05:25,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 01:05:25 BoogieIcfgContainer [2021-10-13 01:05:25,085 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 01:05:25,086 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 01:05:25,086 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 01:05:25,086 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 01:05:25,087 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:05:17" (3/4) ... [2021-10-13 01:05:25,091 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 01:05:25,112 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-10-13 01:05:25,112 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 01:05:25,112 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 01:05:25,112 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 01:05:25,193 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ba68e4-562c-406b-b834-0bc9346d9812/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 01:05:25,193 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 01:05:25,195 INFO L168 Benchmark]: Toolchain (without parser) took 8975.03 ms. Allocated memory was 96.5 MB in the beginning and 163.6 MB in the end (delta: 67.1 MB). Free memory was 62.7 MB in the beginning and 58.4 MB in the end (delta: 4.3 MB). Peak memory consumption was 70.5 MB. Max. memory is 16.1 GB. [2021-10-13 01:05:25,196 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 96.5 MB. Free memory is still 53.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:05:25,197 INFO L168 Benchmark]: CACSL2BoogieTranslator took 269.49 ms. Allocated memory was 96.5 MB in the beginning and 136.3 MB in the end (delta: 39.8 MB). Free memory was 62.4 MB in the beginning and 111.1 MB in the end (delta: -48.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 01:05:25,198 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.77 ms. Allocated memory is still 136.3 MB. Free memory was 111.1 MB in the beginning and 109.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 01:05:25,199 INFO L168 Benchmark]: Boogie Preprocessor took 53.19 ms. Allocated memory is still 136.3 MB. Free memory was 109.0 MB in the beginning and 108.2 MB in the end (delta: 844.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 01:05:25,199 INFO L168 Benchmark]: RCFGBuilder took 477.43 ms. Allocated memory is still 136.3 MB. Free memory was 108.2 MB in the beginning and 98.5 MB in the end (delta: 9.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 01:05:25,200 INFO L168 Benchmark]: TraceAbstraction took 7998.76 ms. Allocated memory was 136.3 MB in the beginning and 163.6 MB in the end (delta: 27.3 MB). Free memory was 97.7 MB in the beginning and 61.5 MB in the end (delta: 36.2 MB). Peak memory consumption was 65.1 MB. Max. memory is 16.1 GB. [2021-10-13 01:05:25,200 INFO L168 Benchmark]: Witness Printer took 106.79 ms. Allocated memory is still 163.6 MB. Free memory was 61.5 MB in the beginning and 58.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 01:05:25,204 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 96.5 MB. Free memory is still 53.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 269.49 ms. Allocated memory was 96.5 MB in the beginning and 136.3 MB in the end (delta: 39.8 MB). Free memory was 62.4 MB in the beginning and 111.1 MB in the end (delta: -48.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 54.77 ms. Allocated memory is still 136.3 MB. Free memory was 111.1 MB in the beginning and 109.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 53.19 ms. Allocated memory is still 136.3 MB. Free memory was 109.0 MB in the beginning and 108.2 MB in the end (delta: 844.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 477.43 ms. Allocated memory is still 136.3 MB. Free memory was 108.2 MB in the beginning and 98.5 MB in the end (delta: 9.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7998.76 ms. Allocated memory was 136.3 MB in the beginning and 163.6 MB in the end (delta: 27.3 MB). Free memory was 97.7 MB in the beginning and 61.5 MB in the end (delta: 36.2 MB). Peak memory consumption was 65.1 MB. Max. memory is 16.1 GB. * Witness Printer took 106.79 ms. Allocated memory is still 163.6 MB. Free memory was 61.5 MB in the beginning and 58.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 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: 7891.4ms, OverallIterations: 6, TraceHistogramMax: 3, EmptinessCheckTime: 14.8ms, AutomataDifference: 1566.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 846.4ms, InitialAbstractionConstructionTime: 26.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 74 SDtfs, 183 SDslu, 127 SDs, 0 SdLazy, 363 SolverSat, 71 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 449.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 100 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1456.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=5, InterpolantAutomatonStates: 47, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 47.1ms AutomataMinimizationTime, 6 MinimizatonAttempts, 17 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 14 NumberOfFragments, 313 HoareAnnotationTreeSize, 4 FomulaSimplifications, 126 FormulaSimplificationTreeSizeReduction, 79.6ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 42 FormulaSimplificationTreeSizeReductionInter, 760.5ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 53.2ms SsaConstructionTime, 153.5ms SatisfiabilityAnalysisTime, 3433.9ms InterpolantComputationTime, 89 NumberOfCodeBlocks, 89 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 83 ConstructedInterpolants, 0 QuantifiedInterpolants, 814 SizeOfPredicates, 43 NumberOfNonLiveVariables, 396 ConjunctsInSsa, 124 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 0/13 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 && 1 <= cond) && a <= 2) && 1 <= b / 2 % 2) && x == 4 * a) && b <= 2) && z == 2 * a) && 1 <= b) && y == (-1 + b / 2) / 2) && 0 <= a) || (((((((((z == 0 && !(b % 2 == 1)) && cond == 1) && x == 2 * a) && a <= 2) && y == b / 2) && 1 == cond) && b <= 2) && 1 <= b) && 0 <= a)) || (((((((((cond == 1 && x == 2 * a) && 1 <= cond) && a <= 2) && b <= 2) && a == z) && 1 <= b) && 1 <= b % 2) && 0 <= a) && y == (-1 + b) / 2)) || ((((((((cond == 1 && a * b == z + x * y) && a == x) && a <= 2) && 1 == cond) && b <= 2) && 1 <= b) && 0 <= a) && b == y) - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: (((((((((((cond == 1 && 1 <= cond) && a <= 2) && 1 <= b / 2 % 2) && x == 4 * a) && b <= 2) && z == 2 * a) && 1 <= b) && y == (-1 + b / 2) / 2) && 0 <= a) || (((((((((z == 0 && !(b % 2 == 1)) && cond == 1) && x == 2 * a) && 1 <= cond) && a <= 2) && y == b / 2) && b <= 2) && 1 <= b) && 0 <= a)) || (((((((((cond == 1 && x == 2 * a) && 1 <= cond) && a <= 2) && b <= 2) && a == z) && 1 <= b) && 1 <= b % 2) && 0 <= a) && y == (-1 + b) / 2)) || (((((((cond == 1 && a * b == z + x * y) && a == x) && a <= 2) && b <= 2) && 1 <= b) && 0 <= a) && b == y) - 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 01:05:25,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ba68e4-562c-406b-b834-0bc9346d9812/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...