./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-acceleration/phases_1-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fadf55cb-9394-449b-b06e-24becdd5eb75/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fadf55cb-9394-449b-b06e-24becdd5eb75/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fadf55cb-9394-449b-b06e-24becdd5eb75/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fadf55cb-9394-449b-b06e-24becdd5eb75/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-acceleration/phases_1-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fadf55cb-9394-449b-b06e-24becdd5eb75/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fadf55cb-9394-449b-b06e-24becdd5eb75/bin/uautomizer-wIGwrQj20G --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 bc900b1bfcaecf91bc89637deaef4e1ddf2476faf43fa7e6f1e197c315ae3982 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 13:38:03,473 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 13:38:03,475 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 13:38:03,537 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 13:38:03,540 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 13:38:03,546 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 13:38:03,549 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 13:38:03,554 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 13:38:03,556 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 13:38:03,565 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 13:38:03,566 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 13:38:03,568 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 13:38:03,569 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 13:38:03,572 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 13:38:03,575 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 13:38:03,581 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 13:38:03,584 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 13:38:03,585 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 13:38:03,592 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 13:38:03,601 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 13:38:03,604 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 13:38:03,606 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 13:38:03,610 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 13:38:03,612 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 13:38:03,616 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 13:38:03,617 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 13:38:03,617 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 13:38:03,620 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 13:38:03,620 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 13:38:03,622 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 13:38:03,623 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 13:38:03,624 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 13:38:03,626 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 13:38:03,628 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 13:38:03,630 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 13:38:03,630 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 13:38:03,631 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 13:38:03,631 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 13:38:03,632 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 13:38:03,633 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 13:38:03,634 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 13:38:03,635 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fadf55cb-9394-449b-b06e-24becdd5eb75/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-23 13:38:03,684 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 13:38:03,685 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 13:38:03,686 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 13:38:03,686 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 13:38:03,693 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 13:38:03,694 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 13:38:03,694 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 13:38:03,694 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 13:38:03,694 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 13:38:03,695 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 13:38:03,696 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 13:38:03,696 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 13:38:03,696 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 13:38:03,697 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 13:38:03,697 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 13:38:03,697 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 13:38:03,697 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 13:38:03,698 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 13:38:03,698 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 13:38:03,698 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 13:38:03,698 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 13:38:03,699 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 13:38:03,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:38:03,699 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 13:38:03,699 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 13:38:03,700 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 13:38:03,700 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 13:38:03,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 13:38:03,700 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 13:38:03,702 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 13:38:03,702 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 13:38:03,703 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 13:38:03,703 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_fadf55cb-9394-449b-b06e-24becdd5eb75/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fadf55cb-9394-449b-b06e-24becdd5eb75/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bc900b1bfcaecf91bc89637deaef4e1ddf2476faf43fa7e6f1e197c315ae3982 [2021-11-23 13:38:03,995 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 13:38:04,025 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 13:38:04,029 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 13:38:04,031 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 13:38:04,032 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 13:38:04,033 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fadf55cb-9394-449b-b06e-24becdd5eb75/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/loop-acceleration/phases_1-1.c [2021-11-23 13:38:04,140 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fadf55cb-9394-449b-b06e-24becdd5eb75/bin/uautomizer-wIGwrQj20G/data/c39f0baef/7eb7a39d3dc1445a879f19ec97c02804/FLAGff87a81bc [2021-11-23 13:38:04,599 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 13:38:04,599 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fadf55cb-9394-449b-b06e-24becdd5eb75/sv-benchmarks/c/loop-acceleration/phases_1-1.c [2021-11-23 13:38:04,604 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fadf55cb-9394-449b-b06e-24becdd5eb75/bin/uautomizer-wIGwrQj20G/data/c39f0baef/7eb7a39d3dc1445a879f19ec97c02804/FLAGff87a81bc [2021-11-23 13:38:05,092 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fadf55cb-9394-449b-b06e-24becdd5eb75/bin/uautomizer-wIGwrQj20G/data/c39f0baef/7eb7a39d3dc1445a879f19ec97c02804 [2021-11-23 13:38:05,095 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 13:38:05,097 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 13:38:05,099 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 13:38:05,099 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 13:38:05,109 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 13:38:05,110 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:38:05" (1/1) ... [2021-11-23 13:38:05,111 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@aaaf0af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:38:05, skipping insertion in model container [2021-11-23 13:38:05,111 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:38:05" (1/1) ... [2021-11-23 13:38:05,121 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 13:38:05,139 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 13:38:05,305 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fadf55cb-9394-449b-b06e-24becdd5eb75/sv-benchmarks/c/loop-acceleration/phases_1-1.c[322,335] [2021-11-23 13:38:05,351 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:38:05,360 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 13:38:05,373 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fadf55cb-9394-449b-b06e-24becdd5eb75/sv-benchmarks/c/loop-acceleration/phases_1-1.c[322,335] [2021-11-23 13:38:05,376 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:38:05,390 INFO L208 MainTranslator]: Completed translation [2021-11-23 13:38:05,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:38:05 WrapperNode [2021-11-23 13:38:05,391 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 13:38:05,393 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 13:38:05,393 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 13:38:05,393 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 13:38:05,402 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:38:05" (1/1) ... [2021-11-23 13:38:05,410 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:38:05" (1/1) ... [2021-11-23 13:38:05,430 INFO L137 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 27 [2021-11-23 13:38:05,431 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 13:38:05,432 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 13:38:05,432 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 13:38:05,432 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 13:38:05,441 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:38:05" (1/1) ... [2021-11-23 13:38:05,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:38:05" (1/1) ... [2021-11-23 13:38:05,443 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:38:05" (1/1) ... [2021-11-23 13:38:05,443 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:38:05" (1/1) ... [2021-11-23 13:38:05,446 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:38:05" (1/1) ... [2021-11-23 13:38:05,450 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:38:05" (1/1) ... [2021-11-23 13:38:05,451 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:38:05" (1/1) ... [2021-11-23 13:38:05,453 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 13:38:05,454 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 13:38:05,454 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 13:38:05,454 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 13:38:05,455 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:38:05" (1/1) ... [2021-11-23 13:38:05,464 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:38:05,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fadf55cb-9394-449b-b06e-24becdd5eb75/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:38:05,494 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fadf55cb-9394-449b-b06e-24becdd5eb75/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 13:38:05,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fadf55cb-9394-449b-b06e-24becdd5eb75/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 13:38:05,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 13:38:05,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 13:38:05,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 13:38:05,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 13:38:05,618 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 13:38:05,620 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 13:38:05,767 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 13:38:05,774 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 13:38:05,774 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 13:38:05,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:38:05 BoogieIcfgContainer [2021-11-23 13:38:05,776 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 13:38:05,779 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 13:38:05,779 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 13:38:05,784 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 13:38:05,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:38:05" (1/3) ... [2021-11-23 13:38:05,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d8dad07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:38:05, skipping insertion in model container [2021-11-23 13:38:05,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:38:05" (2/3) ... [2021-11-23 13:38:05,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d8dad07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:38:05, skipping insertion in model container [2021-11-23 13:38:05,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:38:05" (3/3) ... [2021-11-23 13:38:05,790 INFO L111 eAbstractionObserver]: Analyzing ICFG phases_1-1.c [2021-11-23 13:38:05,801 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 13:38:05,801 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 13:38:05,847 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 13:38:05,855 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 13:38:05,855 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 13:38:05,870 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:38:05,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-23 13:38:05,875 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:38:05,875 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-23 13:38:05,876 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:38:05,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:38:05,892 INFO L85 PathProgramCache]: Analyzing trace with hash 889937703, now seen corresponding path program 1 times [2021-11-23 13:38:05,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:38:05,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929039004] [2021-11-23 13:38:05,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:38:05,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:38:05,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:38:06,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:38:06,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:38:06,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929039004] [2021-11-23 13:38:06,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929039004] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:38:06,036 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:38:06,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 13:38:06,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996999870] [2021-11-23 13:38:06,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:38:06,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 13:38:06,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:38:06,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 13:38:06,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 13:38:06,082 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-11-23 13:38:06,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:38:06,097 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2021-11-23 13:38:06,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 13:38:06,113 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2021-11-23 13:38:06,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:38:06,121 INFO L225 Difference]: With dead ends: 20 [2021-11-23 13:38:06,122 INFO L226 Difference]: Without dead ends: 8 [2021-11-23 13:38:06,124 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 13:38:06,129 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:38:06,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:38:06,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-11-23 13:38:06,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-11-23 13:38:06,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:38:06,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2021-11-23 13:38:06,171 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 6 [2021-11-23 13:38:06,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:38:06,172 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2021-11-23 13:38:06,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-11-23 13:38:06,173 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2021-11-23 13:38:06,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-23 13:38:06,173 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:38:06,173 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-23 13:38:06,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 13:38:06,174 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:38:06,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:38:06,175 INFO L85 PathProgramCache]: Analyzing trace with hash 889639793, now seen corresponding path program 1 times [2021-11-23 13:38:06,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:38:06,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241974019] [2021-11-23 13:38:06,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:38:06,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:38:06,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:38:06,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:38:06,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:38:06,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241974019] [2021-11-23 13:38:06,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241974019] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:38:06,316 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:38:06,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:38:06,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045516560] [2021-11-23 13:38:06,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:38:06,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:38:06,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:38:06,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:38:06,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:38:06,320 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-11-23 13:38:06,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:38:06,353 INFO L93 Difference]: Finished difference Result 16 states and 20 transitions. [2021-11-23 13:38:06,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:38:06,354 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2021-11-23 13:38:06,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:38:06,354 INFO L225 Difference]: With dead ends: 16 [2021-11-23 13:38:06,354 INFO L226 Difference]: Without dead ends: 10 [2021-11-23 13:38:06,355 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:38:06,357 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 1 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:38:06,357 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 10 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:38:06,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-11-23 13:38:06,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-11-23 13:38:06,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 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) [2021-11-23 13:38:06,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2021-11-23 13:38:06,361 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 6 [2021-11-23 13:38:06,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:38:06,362 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2021-11-23 13:38:06,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-11-23 13:38:06,362 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2021-11-23 13:38:06,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-23 13:38:06,363 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:38:06,363 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:38:06,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 13:38:06,363 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:38:06,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:38:06,364 INFO L85 PathProgramCache]: Analyzing trace with hash 295691924, now seen corresponding path program 1 times [2021-11-23 13:38:06,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:38:06,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892466570] [2021-11-23 13:38:06,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:38:06,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:38:06,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:38:06,436 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:38:06,437 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:38:06,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892466570] [2021-11-23 13:38:06,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892466570] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:38:06,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330908926] [2021-11-23 13:38:06,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:38:06,438 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:38:06,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fadf55cb-9394-449b-b06e-24becdd5eb75/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:38:06,440 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fadf55cb-9394-449b-b06e-24becdd5eb75/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:38:06,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fadf55cb-9394-449b-b06e-24becdd5eb75/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 13:38:06,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:38:06,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 13:38:06,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:38:06,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:38:06,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:38:06,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:38:06,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [330908926] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:38:06,694 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 13:38:06,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-23 13:38:06,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236823912] [2021-11-23 13:38:06,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 13:38:06,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 13:38:06,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:38:06,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 13:38:06,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:38:06,697 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 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) [2021-11-23 13:38:06,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:38:06,802 INFO L93 Difference]: Finished difference Result 20 states and 26 transitions. [2021-11-23 13:38:06,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:38:06,802 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-23 13:38:06,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:38:06,803 INFO L225 Difference]: With dead ends: 20 [2021-11-23 13:38:06,803 INFO L226 Difference]: Without dead ends: 14 [2021-11-23 13:38:06,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:38:06,805 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 3 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:38:06,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 21 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:38:06,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-23 13:38:06,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2021-11-23 13:38:06,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 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) [2021-11-23 13:38:06,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2021-11-23 13:38:06,810 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 8 [2021-11-23 13:38:06,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:38:06,811 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2021-11-23 13:38:06,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 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) [2021-11-23 13:38:06,811 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2021-11-23 13:38:06,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-23 13:38:06,811 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:38:06,812 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:38:06,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fadf55cb-9394-449b-b06e-24becdd5eb75/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 13:38:07,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fadf55cb-9394-449b-b06e-24becdd5eb75/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:38:07,028 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:38:07,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:38:07,029 INFO L85 PathProgramCache]: Analyzing trace with hash 572634524, now seen corresponding path program 1 times [2021-11-23 13:38:07,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:38:07,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373787938] [2021-11-23 13:38:07,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:38:07,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:38:07,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:38:07,214 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:38:07,215 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:38:07,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373787938] [2021-11-23 13:38:07,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373787938] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:38:07,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724893463] [2021-11-23 13:38:07,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:38:07,216 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:38:07,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fadf55cb-9394-449b-b06e-24becdd5eb75/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:38:07,217 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fadf55cb-9394-449b-b06e-24becdd5eb75/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:38:07,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fadf55cb-9394-449b-b06e-24becdd5eb75/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 13:38:07,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:38:07,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 13:38:07,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:38:07,548 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:38:07,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:38:07,660 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-23 13:38:07,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724893463] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:38:07,660 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 13:38:07,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 5] total 10 [2021-11-23 13:38:07,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410968550] [2021-11-23 13:38:07,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 13:38:07,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 13:38:07,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:38:07,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 13:38:07,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-23 13:38:07,671 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 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) [2021-11-23 13:38:07,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:38:07,811 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2021-11-23 13:38:07,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 13:38:07,811 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 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 12 [2021-11-23 13:38:07,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:38:07,813 INFO L225 Difference]: With dead ends: 27 [2021-11-23 13:38:07,813 INFO L226 Difference]: Without dead ends: 18 [2021-11-23 13:38:07,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-11-23 13:38:07,820 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 5 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:38:07,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 23 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:38:07,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-11-23 13:38:07,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2021-11-23 13:38:07,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 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) [2021-11-23 13:38:07,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-11-23 13:38:07,831 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 12 [2021-11-23 13:38:07,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:38:07,832 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-11-23 13:38:07,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 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) [2021-11-23 13:38:07,832 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-11-23 13:38:07,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-23 13:38:07,833 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:38:07,833 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:38:07,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fadf55cb-9394-449b-b06e-24becdd5eb75/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 13:38:08,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fadf55cb-9394-449b-b06e-24becdd5eb75/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:38:08,060 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:38:08,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:38:08,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1176853889, now seen corresponding path program 2 times [2021-11-23 13:38:08,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:38:08,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116162114] [2021-11-23 13:38:08,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:38:08,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:38:08,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:38:08,194 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:38:08,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:38:08,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116162114] [2021-11-23 13:38:08,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116162114] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:38:08,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037848382] [2021-11-23 13:38:08,203 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 13:38:08,204 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:38:08,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fadf55cb-9394-449b-b06e-24becdd5eb75/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:38:08,212 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fadf55cb-9394-449b-b06e-24becdd5eb75/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:38:08,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fadf55cb-9394-449b-b06e-24becdd5eb75/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 13:38:08,255 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 13:38:08,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 13:38:08,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-23 13:38:08,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:38:08,379 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:38:08,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:38:08,585 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:38:08,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037848382] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:38:08,585 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 13:38:08,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 12 [2021-11-23 13:38:08,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63893546] [2021-11-23 13:38:08,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 13:38:08,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 13:38:08,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:38:08,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 13:38:08,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2021-11-23 13:38:08,588 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 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) [2021-11-23 13:38:09,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:38:09,110 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2021-11-23 13:38:09,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 13:38:09,114 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 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 14 [2021-11-23 13:38:09,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:38:09,115 INFO L225 Difference]: With dead ends: 36 [2021-11-23 13:38:09,115 INFO L226 Difference]: Without dead ends: 27 [2021-11-23 13:38:09,116 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=99, Invalid=141, Unknown=0, NotChecked=0, Total=240 [2021-11-23 13:38:09,117 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 20 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:38:09,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 21 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:38:09,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-23 13:38:09,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-11-23 13:38:09,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 states have internal predecessors, (29), 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) [2021-11-23 13:38:09,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2021-11-23 13:38:09,125 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 14 [2021-11-23 13:38:09,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:38:09,126 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2021-11-23 13:38:09,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 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) [2021-11-23 13:38:09,126 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2021-11-23 13:38:09,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-23 13:38:09,127 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:38:09,128 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:38:09,157 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fadf55cb-9394-449b-b06e-24becdd5eb75/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 13:38:09,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fadf55cb-9394-449b-b06e-24becdd5eb75/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:38:09,341 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:38:09,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:38:09,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1990618095, now seen corresponding path program 3 times [2021-11-23 13:38:09,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:38:09,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108919333] [2021-11-23 13:38:09,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:38:09,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:38:09,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:38:09,738 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 10 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:38:09,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:38:09,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108919333] [2021-11-23 13:38:09,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108919333] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:38:09,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438968649] [2021-11-23 13:38:09,740 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 13:38:09,740 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:38:09,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fadf55cb-9394-449b-b06e-24becdd5eb75/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:38:09,741 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fadf55cb-9394-449b-b06e-24becdd5eb75/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:38:09,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fadf55cb-9394-449b-b06e-24becdd5eb75/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 13:38:09,825 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-23 13:38:09,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 13:38:09,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 13:38:09,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:38:10,018 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-23 13:38:10,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:38:10,264 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-23 13:38:10,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438968649] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:38:10,265 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 13:38:10,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 4, 5] total 17 [2021-11-23 13:38:10,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804586760] [2021-11-23 13:38:10,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 13:38:10,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-23 13:38:10,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:38:10,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-23 13:38:10,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2021-11-23 13:38:10,268 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 17 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) [2021-11-23 13:38:10,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:38:10,685 INFO L93 Difference]: Finished difference Result 53 states and 68 transitions. [2021-11-23 13:38:10,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-23 13:38:10,686 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 17 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) Word has length 26 [2021-11-23 13:38:10,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:38:10,688 INFO L225 Difference]: With dead ends: 53 [2021-11-23 13:38:10,688 INFO L226 Difference]: Without dead ends: 44 [2021-11-23 13:38:10,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=118, Invalid=224, Unknown=0, NotChecked=0, Total=342 [2021-11-23 13:38:10,690 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 31 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 13:38:10,691 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 18 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 13:38:10,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-11-23 13:38:10,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2021-11-23 13:38:10,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.15) internal successors, (46), 40 states have internal predecessors, (46), 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) [2021-11-23 13:38:10,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2021-11-23 13:38:10,702 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 26 [2021-11-23 13:38:10,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:38:10,703 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2021-11-23 13:38:10,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 17 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) [2021-11-23 13:38:10,703 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2021-11-23 13:38:10,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-23 13:38:10,705 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:38:10,705 INFO L514 BasicCegarLoop]: trace histogram [15, 11, 4, 1, 1, 1, 1, 1, 1] [2021-11-23 13:38:10,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fadf55cb-9394-449b-b06e-24becdd5eb75/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 13:38:10,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fadf55cb-9394-449b-b06e-24becdd5eb75/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:38:10,914 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:38:10,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:38:10,915 INFO L85 PathProgramCache]: Analyzing trace with hash 2051424454, now seen corresponding path program 4 times [2021-11-23 13:38:10,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:38:10,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483220201] [2021-11-23 13:38:10,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:38:10,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:38:10,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:38:11,229 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 84 proven. 132 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-23 13:38:11,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:38:11,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483220201] [2021-11-23 13:38:11,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483220201] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:38:11,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502938215] [2021-11-23 13:38:11,230 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-23 13:38:11,230 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:38:11,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fadf55cb-9394-449b-b06e-24becdd5eb75/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:38:11,233 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fadf55cb-9394-449b-b06e-24becdd5eb75/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:38:11,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fadf55cb-9394-449b-b06e-24becdd5eb75/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 13:38:11,289 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-23 13:38:11,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 13:38:11,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-23 13:38:11,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:38:11,646 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 42 proven. 182 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 13:38:11,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:38:12,797 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 42 proven. 182 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 13:38:12,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502938215] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:38:12,797 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 13:38:12,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 17] total 32 [2021-11-23 13:38:12,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237443544] [2021-11-23 13:38:12,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 13:38:12,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-23 13:38:12,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:38:12,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-23 13:38:12,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=693, Unknown=0, NotChecked=0, Total=992 [2021-11-23 13:38:12,801 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand has 32 states, 32 states have (on average 2.125) internal successors, (68), 32 states have internal predecessors, (68), 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) [2021-11-23 13:38:37,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:38:37,807 INFO L93 Difference]: Finished difference Result 92 states and 118 transitions. [2021-11-23 13:38:37,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-23 13:38:37,808 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.125) internal successors, (68), 32 states have internal predecessors, (68), 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 [2021-11-23 13:38:37,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:38:37,810 INFO L225 Difference]: With dead ends: 92 [2021-11-23 13:38:37,810 INFO L226 Difference]: Without dead ends: 73 [2021-11-23 13:38:37,812 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 25.4s TimeCoverageRelationStatistics Valid=747, Invalid=1323, Unknown=0, NotChecked=0, Total=2070 [2021-11-23 13:38:37,813 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 68 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 13:38:37,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 32 Invalid, 470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-23 13:38:37,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-11-23 13:38:37,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-11-23 13:38:37,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.0833333333333333) internal successors, (78), 72 states have internal predecessors, (78), 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) [2021-11-23 13:38:37,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 78 transitions. [2021-11-23 13:38:37,828 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 78 transitions. Word has length 36 [2021-11-23 13:38:37,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:38:37,828 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 78 transitions. [2021-11-23 13:38:37,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.125) internal successors, (68), 32 states have internal predecessors, (68), 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) [2021-11-23 13:38:37,829 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 78 transitions. [2021-11-23 13:38:37,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-23 13:38:37,831 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:38:37,832 INFO L514 BasicCegarLoop]: trace histogram [31, 27, 4, 1, 1, 1, 1, 1, 1] [2021-11-23 13:38:37,879 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fadf55cb-9394-449b-b06e-24becdd5eb75/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-23 13:38:38,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fadf55cb-9394-449b-b06e-24becdd5eb75/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:38:38,049 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:38:38,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:38:38,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1213758218, now seen corresponding path program 5 times [2021-11-23 13:38:38,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:38:38,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619002563] [2021-11-23 13:38:38,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:38:38,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:38:38,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:38:39,119 INFO L134 CoverageAnalysis]: Checked inductivity of 961 backedges. 196 proven. 756 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-23 13:38:39,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:38:39,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619002563] [2021-11-23 13:38:39,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619002563] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:38:39,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248992018] [2021-11-23 13:38:39,119 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-23 13:38:39,120 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:38:39,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fadf55cb-9394-449b-b06e-24becdd5eb75/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:38:39,122 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fadf55cb-9394-449b-b06e-24becdd5eb75/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:38:39,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fadf55cb-9394-449b-b06e-24becdd5eb75/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-23 13:39:15,863 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2021-11-23 13:39:15,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 13:39:15,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 60 conjunts are in the unsatisfiable core [2021-11-23 13:39:15,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:39:16,355 INFO L134 CoverageAnalysis]: Checked inductivity of 961 backedges. 145 proven. 812 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-23 13:39:16,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:39:19,832 INFO L134 CoverageAnalysis]: Checked inductivity of 961 backedges. 145 proven. 812 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-23 13:39:19,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248992018] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:39:19,832 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 13:39:19,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 31, 32] total 62 [2021-11-23 13:39:19,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122331670] [2021-11-23 13:39:19,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 13:39:19,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2021-11-23 13:39:19,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:39:19,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2021-11-23 13:39:19,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1050, Invalid=2732, Unknown=0, NotChecked=0, Total=3782 [2021-11-23 13:39:19,839 INFO L87 Difference]: Start difference. First operand 73 states and 78 transitions. Second operand has 62 states, 62 states have (on average 2.064516129032258) internal successors, (128), 62 states have internal predecessors, (128), 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) [2021-11-23 13:39:57,788 WARN L227 SmtUtils]: Spent 13.94s on a formula simplification. DAG size of input: 175 DAG size of output: 10 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 13:40:29,952 WARN L227 SmtUtils]: Spent 11.64s on a formula simplification. DAG size of input: 169 DAG size of output: 10 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 13:40:31,972 WARN L838 $PredicateComparison]: unable to prove that (and (let ((.cse0 (mod (+ 3 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (< .cse0 65520) (<= 268435455 .cse0))) (let ((.cse1 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 25) 4294967296))) (or (< .cse1 65520) (<= 268435455 .cse1))) (let ((.cse2 (mod (+ 6 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (< .cse2 65520) (<= 268435455 .cse2))) (let ((.cse3 (mod (+ 22 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (< .cse3 65520) (<= 268435455 .cse3))) (< (mod |c_ULTIMATE.start_main_~x~0#1| 4294967296) 65520) (let ((.cse4 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 4) 4294967296))) (or (<= 268435455 .cse4) (< .cse4 65520))) (let ((.cse5 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 11) 4294967296))) (or (<= 268435455 .cse5) (< .cse5 65520))) (let ((.cse6 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 17) 4294967296))) (or (<= 268435455 .cse6) (< .cse6 65520))) (let ((.cse7 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 27) 4294967296))) (or (<= 268435455 .cse7) (< .cse7 65520))) (let ((.cse8 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 26) 4294967296))) (or (< .cse8 65520) (<= 268435455 .cse8))) (let ((.cse9 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 13) 4294967296))) (or (<= 268435455 .cse9) (< .cse9 65520))) (let ((.cse10 (mod (+ 16 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (<= 268435455 .cse10) (< .cse10 65520))) (let ((.cse11 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 10) 4294967296))) (or (<= 268435455 .cse11) (< .cse11 65520))) (let ((.cse12 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 18) 4294967296))) (or (<= 268435455 .cse12) (< .cse12 65520))) (let ((.cse13 (mod (+ 21 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (< .cse13 65520) (<= 268435455 .cse13))) (let ((.cse14 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 24) 4294967296))) (or (<= 268435455 .cse14) (< .cse14 65520))) (let ((.cse15 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 20) 4294967296))) (or (<= 268435455 .cse15) (< .cse15 65520))) (let ((.cse16 (mod (+ 7 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (< .cse16 65520) (<= 268435455 .cse16))) (let ((.cse17 (mod (+ 19 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (< .cse17 65520) (<= 268435455 .cse17))) (let ((.cse18 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 15) 4294967296))) (or (< .cse18 65520) (<= 268435455 .cse18))) (let ((.cse19 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 8) 4294967296))) (or (<= 268435455 .cse19) (< .cse19 65520))) (let ((.cse20 (mod (+ 5 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (<= 268435455 .cse20) (< .cse20 65520))) (let ((.cse21 (mod (+ 9 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (< .cse21 65520) (<= 268435455 .cse21))) (let ((.cse22 (mod (+ 14 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (< .cse22 65520) (<= 268435455 .cse22))) (let ((.cse23 (mod (+ 2 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (<= 268435455 .cse23) (< .cse23 65520))) (let ((.cse24 (mod (+ 23 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (<= 268435455 .cse24) (< .cse24 65520))) (let ((.cse25 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 12) 4294967296))) (or (< .cse25 65520) (<= 268435455 .cse25)))) is different from false [2021-11-23 13:41:03,670 WARN L227 SmtUtils]: Spent 10.47s on a formula simplification. DAG size of input: 155 DAG size of output: 17 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 13:41:06,290 WARN L838 $PredicateComparison]: unable to prove that (and (let ((.cse0 (mod (+ 3 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (< .cse0 65520) (<= 268435455 .cse0))) (let ((.cse1 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 25) 4294967296))) (or (< .cse1 65520) (<= 268435455 .cse1))) (let ((.cse2 (mod (+ 6 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (< .cse2 65520) (<= 268435455 .cse2))) (let ((.cse3 (mod (+ 22 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (< .cse3 65520) (<= 268435455 .cse3))) (let ((.cse4 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 4) 4294967296))) (or (<= 268435455 .cse4) (< .cse4 65520))) (let ((.cse5 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 11) 4294967296))) (or (<= 268435455 .cse5) (< .cse5 65520))) (let ((.cse6 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 17) 4294967296))) (or (<= 268435455 .cse6) (< .cse6 65520))) (let ((.cse7 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 27) 4294967296))) (or (<= 268435455 .cse7) (< .cse7 65520))) (let ((.cse8 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 26) 4294967296))) (or (< .cse8 65520) (<= 268435455 .cse8))) (let ((.cse9 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 13) 4294967296))) (or (<= 268435455 .cse9) (< .cse9 65520))) (let ((.cse10 (mod (+ 16 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (<= 268435455 .cse10) (< .cse10 65520))) (let ((.cse11 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 10) 4294967296))) (or (<= 268435455 .cse11) (< .cse11 65520))) (let ((.cse12 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 18) 4294967296))) (or (<= 268435455 .cse12) (< .cse12 65520))) (let ((.cse13 (mod (+ 21 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (< .cse13 65520) (<= 268435455 .cse13))) (let ((.cse14 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 24) 4294967296))) (or (<= 268435455 .cse14) (< .cse14 65520))) (let ((.cse15 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 20) 4294967296))) (or (<= 268435455 .cse15) (< .cse15 65520))) (let ((.cse16 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 28) 4294967296))) (or (< .cse16 65520) (<= 268435455 .cse16))) (let ((.cse17 (mod (+ 7 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (< .cse17 65520) (<= 268435455 .cse17))) (let ((.cse18 (mod (+ 19 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (< .cse18 65520) (<= 268435455 .cse18))) (let ((.cse19 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 15) 4294967296))) (or (< .cse19 65520) (<= 268435455 .cse19))) (let ((.cse20 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 8) 4294967296))) (or (<= 268435455 .cse20) (< .cse20 65520))) (let ((.cse21 (mod (+ 5 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (<= 268435455 .cse21) (< .cse21 65520))) (let ((.cse22 (mod (+ 9 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (< .cse22 65520) (<= 268435455 .cse22))) (let ((.cse23 (mod (+ 14 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (< .cse23 65520) (<= 268435455 .cse23))) (let ((.cse24 (mod (+ 2 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (<= 268435455 .cse24) (< .cse24 65520))) (let ((.cse25 (mod (+ 23 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (<= 268435455 .cse25) (< .cse25 65520))) (let ((.cse26 (mod |c_ULTIMATE.start_main_~x~0#1| 4294967296))) (or (<= 268435455 .cse26) (< .cse26 65520))) (let ((.cse27 (mod (+ 29 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (< .cse27 65520) (<= 268435455 .cse27))) (let ((.cse28 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 12) 4294967296))) (or (< .cse28 65520) (<= 268435455 .cse28)))) is different from false [2021-11-23 13:41:35,195 WARN L227 SmtUtils]: Spent 10.24s on a formula simplification. DAG size of input: 151 DAG size of output: 10 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 13:42:38,700 WARN L227 SmtUtils]: Spent 7.76s on a formula simplification. DAG size of input: 133 DAG size of output: 10 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 13:43:07,686 WARN L227 SmtUtils]: Spent 6.38s on a formula simplification. DAG size of input: 127 DAG size of output: 10 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 13:45:43,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:45:43,961 INFO L93 Difference]: Finished difference Result 156 states and 197 transitions. [2021-11-23 13:45:43,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-11-23 13:45:43,962 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 2.064516129032258) internal successors, (128), 62 states have internal predecessors, (128), 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 68 [2021-11-23 13:45:43,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:45:43,964 INFO L225 Difference]: With dead ends: 156 [2021-11-23 13:45:43,965 INFO L226 Difference]: Without dead ends: 135 [2021-11-23 13:45:43,969 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 106 SyntacticMatches, 1 SemanticMatches, 89 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 385.7s TimeCoverageRelationStatistics Valid=2677, Invalid=5154, Unknown=9, NotChecked=350, Total=8190 [2021-11-23 13:45:43,970 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 55 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 1751 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 1912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:45:43,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 98 Invalid, 1912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1751 Invalid, 0 Unknown, 4 Unchecked, 2.0s Time] [2021-11-23 13:45:43,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-11-23 13:45:43,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2021-11-23 13:45:43,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 1.044776119402985) internal successors, (140), 134 states have internal predecessors, (140), 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) [2021-11-23 13:45:43,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 140 transitions. [2021-11-23 13:45:43,993 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 140 transitions. Word has length 68 [2021-11-23 13:45:43,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:45:43,994 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 140 transitions. [2021-11-23 13:45:43,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 2.064516129032258) internal successors, (128), 62 states have internal predecessors, (128), 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) [2021-11-23 13:45:43,994 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 140 transitions. [2021-11-23 13:45:44,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-23 13:45:44,002 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:45:44,002 INFO L514 BasicCegarLoop]: trace histogram [61, 57, 4, 1, 1, 1, 1, 1, 1] [2021-11-23 13:45:44,025 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fadf55cb-9394-449b-b06e-24becdd5eb75/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-23 13:45:44,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fadf55cb-9394-449b-b06e-24becdd5eb75/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-23 13:45:44,225 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:45:44,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:45:44,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1085724848, now seen corresponding path program 6 times [2021-11-23 13:45:44,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:45:44,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846095557] [2021-11-23 13:45:44,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:45:44,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:45:44,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:45:46,484 INFO L134 CoverageAnalysis]: Checked inductivity of 3721 backedges. 406 proven. 3306 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-23 13:45:46,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:45:46,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846095557] [2021-11-23 13:45:46,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846095557] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:45:46,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416995515] [2021-11-23 13:45:46,485 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-23 13:45:46,485 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:45:46,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fadf55cb-9394-449b-b06e-24becdd5eb75/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:45:46,488 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fadf55cb-9394-449b-b06e-24becdd5eb75/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:45:46,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fadf55cb-9394-449b-b06e-24becdd5eb75/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-23 13:45:47,405 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-11-23 13:45:47,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 13:45:47,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-23 13:45:47,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:45:48,678 INFO L134 CoverageAnalysis]: Checked inductivity of 3721 backedges. 707 proven. 256 refuted. 0 times theorem prover too weak. 2758 trivial. 0 not checked. [2021-11-23 13:45:48,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:45:50,472 INFO L134 CoverageAnalysis]: Checked inductivity of 3721 backedges. 513 proven. 16 refuted. 0 times theorem prover too weak. 3192 trivial. 0 not checked. [2021-11-23 13:45:50,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416995515] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:45:50,473 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 13:45:50,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 10, 10] total 76 [2021-11-23 13:45:50,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737565659] [2021-11-23 13:45:50,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 13:45:50,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2021-11-23 13:45:50,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:45:50,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-11-23 13:45:50,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=967, Invalid=4733, Unknown=0, NotChecked=0, Total=5700 [2021-11-23 13:45:50,480 INFO L87 Difference]: Start difference. First operand 135 states and 140 transitions. Second operand has 76 states, 76 states have (on average 2.0526315789473686) internal successors, (156), 76 states have internal predecessors, (156), 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) [2021-11-23 13:45:56,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:45:56,936 INFO L93 Difference]: Finished difference Result 179 states and 205 transitions. [2021-11-23 13:45:56,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-11-23 13:45:56,937 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 2.0526315789473686) internal successors, (156), 76 states have internal predecessors, (156), 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 128 [2021-11-23 13:45:56,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:45:56,938 INFO L225 Difference]: With dead ends: 179 [2021-11-23 13:45:56,938 INFO L226 Difference]: Without dead ends: 0 [2021-11-23 13:45:56,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=1227, Invalid=5745, Unknown=0, NotChecked=0, Total=6972 [2021-11-23 13:45:56,942 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 179 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 5749 mSolverCounterSat, 313 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 6062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 313 IncrementalHoareTripleChecker+Valid, 5749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-11-23 13:45:56,943 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [179 Valid, 10 Invalid, 6062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [313 Valid, 5749 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-11-23 13:45:56,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-23 13:45:56,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-23 13:45:56,944 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) [2021-11-23 13:45:56,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-23 13:45:56,944 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 128 [2021-11-23 13:45:56,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:45:56,945 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-23 13:45:56,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 2.0526315789473686) internal successors, (156), 76 states have internal predecessors, (156), 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) [2021-11-23 13:45:56,945 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-23 13:45:56,946 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-23 13:45:56,948 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 13:45:56,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fadf55cb-9394-449b-b06e-24becdd5eb75/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-23 13:45:57,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fadf55cb-9394-449b-b06e-24becdd5eb75/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-11-23 13:45:57,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-23 13:46:16,154 WARN L227 SmtUtils]: Spent 18.42s on a formula simplification. DAG size of input: 323 DAG size of output: 12 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2021-11-23 13:46:16,156 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-23 13:46:16,156 INFO L858 garLoopResultBuilder]: For program point L15-2(lines 15 21) no Hoare annotation was computed. [2021-11-23 13:46:16,156 INFO L858 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2021-11-23 13:46:16,157 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-23 13:46:16,157 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-23 13:46:16,157 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-23 13:46:16,157 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2021-11-23 13:46:16,157 INFO L858 garLoopResultBuilder]: For program point L16(lines 16 20) no Hoare annotation was computed. [2021-11-23 13:46:16,157 INFO L854 garLoopResultBuilder]: At program point L16-2(lines 15 21) the Hoare annotation is: (or (< (mod (+ 4294967295 |ULTIMATE.start_main_~x~0#1|) 4294967296) 65520) (= (mod |ULTIMATE.start_main_~x~0#1| 2) 0)) [2021-11-23 13:46:16,157 INFO L858 garLoopResultBuilder]: For program point L12(lines 12 24) no Hoare annotation was computed. [2021-11-23 13:46:16,157 INFO L858 garLoopResultBuilder]: For program point L6(lines 6 8) no Hoare annotation was computed. [2021-11-23 13:46:16,157 INFO L861 garLoopResultBuilder]: At program point L6-2(lines 5 10) the Hoare annotation is: true [2021-11-23 13:46:16,161 INFO L732 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1] [2021-11-23 13:46:16,163 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 13:46:16,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 01:46:16 BoogieIcfgContainer [2021-11-23 13:46:16,173 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 13:46:16,174 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 13:46:16,174 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 13:46:16,174 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 13:46:16,175 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:38:05" (3/4) ... [2021-11-23 13:46:16,177 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-23 13:46:16,186 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-11-23 13:46:16,186 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-23 13:46:16,186 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-23 13:46:16,186 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-23 13:46:16,223 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fadf55cb-9394-449b-b06e-24becdd5eb75/bin/uautomizer-wIGwrQj20G/witness.graphml [2021-11-23 13:46:16,224 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 13:46:16,225 INFO L158 Benchmark]: Toolchain (without parser) took 491128.08ms. Allocated memory was 83.9MB in the beginning and 123.7MB in the end (delta: 39.8MB). Free memory was 48.8MB in the beginning and 51.8MB in the end (delta: -3.0MB). Peak memory consumption was 37.1MB. Max. memory is 16.1GB. [2021-11-23 13:46:16,225 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 83.9MB. Free memory was 55.7MB in the beginning and 55.7MB in the end (delta: 27.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 13:46:16,226 INFO L158 Benchmark]: CACSL2BoogieTranslator took 293.14ms. Allocated memory was 83.9MB in the beginning and 102.8MB in the end (delta: 18.9MB). Free memory was 48.7MB in the beginning and 79.1MB in the end (delta: -30.4MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. [2021-11-23 13:46:16,226 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.18ms. Allocated memory is still 102.8MB. Free memory was 79.1MB in the beginning and 77.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 13:46:16,226 INFO L158 Benchmark]: Boogie Preprocessor took 21.50ms. Allocated memory is still 102.8MB. Free memory was 77.5MB in the beginning and 76.6MB in the end (delta: 914.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 13:46:16,227 INFO L158 Benchmark]: RCFGBuilder took 322.36ms. Allocated memory is still 102.8MB. Free memory was 76.6MB in the beginning and 68.0MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 13:46:16,228 INFO L158 Benchmark]: TraceAbstraction took 490394.83ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 67.7MB in the beginning and 53.9MB in the end (delta: 13.9MB). Peak memory consumption was 65.6MB. Max. memory is 16.1GB. [2021-11-23 13:46:16,228 INFO L158 Benchmark]: Witness Printer took 49.82ms. Allocated memory is still 123.7MB. Free memory was 53.9MB in the beginning and 51.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 13:46:16,238 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 83.9MB. Free memory was 55.7MB in the beginning and 55.7MB in the end (delta: 27.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 293.14ms. Allocated memory was 83.9MB in the beginning and 102.8MB in the end (delta: 18.9MB). Free memory was 48.7MB in the beginning and 79.1MB in the end (delta: -30.4MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.18ms. Allocated memory is still 102.8MB. Free memory was 79.1MB in the beginning and 77.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.50ms. Allocated memory is still 102.8MB. Free memory was 77.5MB in the beginning and 76.6MB in the end (delta: 914.1kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 322.36ms. Allocated memory is still 102.8MB. Free memory was 76.6MB in the beginning and 68.0MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 490394.83ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 67.7MB in the beginning and 53.9MB in the end (delta: 13.9MB). Peak memory consumption was 65.6MB. Max. memory is 16.1GB. * Witness Printer took 49.82ms. Allocated memory is still 123.7MB. Free memory was 53.9MB in the beginning and 51.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 7]: 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, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 490.3s, OverallIterations: 9, TraceHistogramMax: 61, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 417.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 19.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 362 SdHoareTripleChecker+Valid, 7.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 362 mSDsluCounter, 246 SdHoareTripleChecker+Invalid, 6.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 4 IncrementalHoareTripleChecker+Unchecked, 192 mSDsCounter, 601 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8296 IncrementalHoareTripleChecker+Invalid, 8901 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 601 mSolverCounterUnsat, 54 mSDtfsCounter, 8296 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 780 GetRequests, 513 SyntacticMatches, 5 SemanticMatches, 262 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 870 ImplicationChecksByTransitivity, 418.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=135occurred in iteration=8, InterpolantAutomatonStates: 207, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 5 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 82 NumberOfFragments, 14 HoareAnnotationTreeSize, 2 FomulaSimplifications, 2505 FormulaSimplificationTreeSizeReduction, 0.6s HoareSimplificationTime, 2 FomulaSimplificationsInter, 1781 FormulaSimplificationTreeSizeReductionInter, 18.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 38.1s SatisfiabilityAnalysisTime, 14.1s InterpolantComputationTime, 596 NumberOfCodeBlocks, 496 NumberOfCodeBlocksAsserted, 70 NumberOfCheckSat, 865 ConstructedInterpolants, 0 QuantifiedInterpolants, 4558 SizeOfPredicates, 6 NumberOfNonLiveVariables, 545 ConjunctsInSsa, 155 ConjunctsInUnsatCore, 23 InterpolantComputations, 2 PerfectInterpolantSequences, 8494/15099 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 1 specifications checked. All of them hold - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: (4294967295 + x) % 4294967296 < 65520 || x % 2 == 0 RESULT: Ultimate proved your program to be correct! [2021-11-23 13:46:16,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fadf55cb-9394-449b-b06e-24becdd5eb75/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE