./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound50.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_1e323460-0d56-4ee4-9ca8-585d61609586/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e323460-0d56-4ee4-9ca8-585d61609586/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_1e323460-0d56-4ee4-9ca8-585d61609586/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e323460-0d56-4ee4-9ca8-585d61609586/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound50.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e323460-0d56-4ee4-9ca8-585d61609586/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_1e323460-0d56-4ee4-9ca8-585d61609586/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 9cf0abd1bd1b4ed3cb492af2ceaa5e063719310ace8aba62ab225fe204180938 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 13:49:43,403 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 13:49:43,407 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 13:49:43,478 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 13:49:43,479 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 13:49:43,485 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 13:49:43,487 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 13:49:43,493 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 13:49:43,496 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 13:49:43,504 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 13:49:43,505 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 13:49:43,508 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 13:49:43,509 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 13:49:43,513 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 13:49:43,516 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 13:49:43,522 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 13:49:43,525 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 13:49:43,527 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 13:49:43,531 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 13:49:43,542 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 13:49:43,544 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 13:49:43,547 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 13:49:43,551 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 13:49:43,553 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 13:49:43,564 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 13:49:43,565 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 13:49:43,566 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 13:49:43,569 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 13:49:43,570 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 13:49:43,572 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 13:49:43,572 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 13:49:43,574 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 13:49:43,577 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 13:49:43,579 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 13:49:43,581 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 13:49:43,581 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 13:49:43,583 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 13:49:43,583 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 13:49:43,583 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 13:49:43,585 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 13:49:43,586 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 13:49:43,587 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e323460-0d56-4ee4-9ca8-585d61609586/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-23 13:49:43,647 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 13:49:43,647 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 13:49:43,648 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 13:49:43,649 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 13:49:43,659 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 13:49:43,660 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 13:49:43,661 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 13:49:43,661 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 13:49:43,661 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 13:49:43,662 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 13:49:43,663 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 13:49:43,664 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 13:49:43,664 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 13:49:43,665 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 13:49:43,665 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 13:49:43,665 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 13:49:43,666 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 13:49:43,666 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 13:49:43,666 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 13:49:43,667 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 13:49:43,667 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 13:49:43,668 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 13:49:43,668 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:49:43,668 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 13:49:43,669 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 13:49:43,669 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 13:49:43,670 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 13:49:43,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 13:49:43,670 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 13:49:43,672 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 13:49:43,673 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 13:49:43,673 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 13:49:43,674 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_1e323460-0d56-4ee4-9ca8-585d61609586/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e323460-0d56-4ee4-9ca8-585d61609586/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9cf0abd1bd1b4ed3cb492af2ceaa5e063719310ace8aba62ab225fe204180938 [2021-11-23 13:49:44,113 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 13:49:44,169 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 13:49:44,172 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 13:49:44,174 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 13:49:44,175 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 13:49:44,177 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e323460-0d56-4ee4-9ca8-585d61609586/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound50.c [2021-11-23 13:49:44,280 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e323460-0d56-4ee4-9ca8-585d61609586/bin/uautomizer-wIGwrQj20G/data/035ba586d/86fe026d645f4beda8026d87c78bbbdc/FLAG0c2179198 [2021-11-23 13:49:44,973 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 13:49:44,975 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e323460-0d56-4ee4-9ca8-585d61609586/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound50.c [2021-11-23 13:49:44,989 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e323460-0d56-4ee4-9ca8-585d61609586/bin/uautomizer-wIGwrQj20G/data/035ba586d/86fe026d645f4beda8026d87c78bbbdc/FLAG0c2179198 [2021-11-23 13:49:45,298 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e323460-0d56-4ee4-9ca8-585d61609586/bin/uautomizer-wIGwrQj20G/data/035ba586d/86fe026d645f4beda8026d87c78bbbdc [2021-11-23 13:49:45,303 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 13:49:45,306 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 13:49:45,312 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 13:49:45,313 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 13:49:45,317 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 13:49:45,319 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:49:45" (1/1) ... [2021-11-23 13:49:45,321 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f25e937 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:45, skipping insertion in model container [2021-11-23 13:49:45,322 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:49:45" (1/1) ... [2021-11-23 13:49:45,332 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 13:49:45,355 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 13:49:45,652 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_1e323460-0d56-4ee4-9ca8-585d61609586/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound50.c[576,589] [2021-11-23 13:49:45,686 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:49:45,700 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 13:49:45,722 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_1e323460-0d56-4ee4-9ca8-585d61609586/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound50.c[576,589] [2021-11-23 13:49:45,740 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:49:45,756 INFO L208 MainTranslator]: Completed translation [2021-11-23 13:49:45,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:45 WrapperNode [2021-11-23 13:49:45,757 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 13:49:45,758 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 13:49:45,758 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 13:49:45,758 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 13:49:45,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:45" (1/1) ... [2021-11-23 13:49:45,775 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:45" (1/1) ... [2021-11-23 13:49:45,803 INFO L137 Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 101 [2021-11-23 13:49:45,803 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 13:49:45,804 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 13:49:45,805 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 13:49:45,805 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 13:49:45,816 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:45" (1/1) ... [2021-11-23 13:49:45,817 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:45" (1/1) ... [2021-11-23 13:49:45,819 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:45" (1/1) ... [2021-11-23 13:49:45,819 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:45" (1/1) ... [2021-11-23 13:49:45,825 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:45" (1/1) ... [2021-11-23 13:49:45,831 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:45" (1/1) ... [2021-11-23 13:49:45,833 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:45" (1/1) ... [2021-11-23 13:49:45,835 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 13:49:45,836 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 13:49:45,837 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 13:49:45,837 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 13:49:45,838 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:45" (1/1) ... [2021-11-23 13:49:45,849 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:49:45,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e323460-0d56-4ee4-9ca8-585d61609586/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:49:45,885 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e323460-0d56-4ee4-9ca8-585d61609586/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 13:49:45,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e323460-0d56-4ee4-9ca8-585d61609586/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 13:49:45,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 13:49:45,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 13:49:45,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 13:49:45,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 13:49:46,013 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 13:49:46,015 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 13:49:46,222 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 13:49:46,230 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 13:49:46,230 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-23 13:49:46,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:49:46 BoogieIcfgContainer [2021-11-23 13:49:46,233 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 13:49:46,236 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 13:49:46,236 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 13:49:46,240 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 13:49:46,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:49:45" (1/3) ... [2021-11-23 13:49:46,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d015528 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:49:46, skipping insertion in model container [2021-11-23 13:49:46,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:49:45" (2/3) ... [2021-11-23 13:49:46,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d015528 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:49:46, skipping insertion in model container [2021-11-23 13:49:46,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:49:46" (3/3) ... [2021-11-23 13:49:46,244 INFO L111 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_unwindbound50.c [2021-11-23 13:49:46,251 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 13:49:46,251 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-11-23 13:49:46,319 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 13:49:46,329 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 13:49:46,345 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-23 13:49:46,387 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 35 states have (on average 1.6) internal successors, (56), 42 states have internal predecessors, (56), 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 13:49:46,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-23 13:49:46,394 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:49:46,395 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:49:46,396 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-23 13:49:46,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:49:46,403 INFO L85 PathProgramCache]: Analyzing trace with hash 119446382, now seen corresponding path program 1 times [2021-11-23 13:49:46,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:49:46,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951503675] [2021-11-23 13:49:46,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:49:46,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:49:46,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:49:46,636 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 13:49:46,636 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:49:46,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951503675] [2021-11-23 13:49:46,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951503675] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:49:46,639 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:49:46,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 13:49:46,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058270416] [2021-11-23 13:49:46,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:49:46,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 13:49:46,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:49:46,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 13:49:46,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 13:49:46,702 INFO L87 Difference]: Start difference. First operand has 43 states, 35 states have (on average 1.6) internal successors, (56), 42 states have internal predecessors, (56), 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 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:49:46,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:49:46,749 INFO L93 Difference]: Finished difference Result 83 states and 108 transitions. [2021-11-23 13:49:46,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 13:49:46,752 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-23 13:49:46,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:49:46,763 INFO L225 Difference]: With dead ends: 83 [2021-11-23 13:49:46,764 INFO L226 Difference]: Without dead ends: 39 [2021-11-23 13:49:46,768 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 13:49:46,779 INFO L933 BasicCegarLoop]: 46 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, 46 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 13:49:46,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:49:46,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-11-23 13:49:46,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-11-23 13:49:46,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 32 states have (on average 1.3125) internal successors, (42), 38 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:49:46,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2021-11-23 13:49:46,837 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 8 [2021-11-23 13:49:46,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:49:46,838 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2021-11-23 13:49:46,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:49:46,838 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2021-11-23 13:49:46,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-23 13:49:46,839 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:49:46,840 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:49:46,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 13:49:46,841 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-23 13:49:46,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:49:46,847 INFO L85 PathProgramCache]: Analyzing trace with hash 176704684, now seen corresponding path program 1 times [2021-11-23 13:49:46,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:49:46,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918393242] [2021-11-23 13:49:46,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:49:46,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:49:46,898 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:49:46,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1945408083] [2021-11-23 13:49:46,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:49:46,899 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:49:46,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e323460-0d56-4ee4-9ca8-585d61609586/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:49:46,907 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e323460-0d56-4ee4-9ca8-585d61609586/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:49:46,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e323460-0d56-4ee4-9ca8-585d61609586/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 13:49:46,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:49:46,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 13:49:46,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:49:47,129 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 13:49:47,130 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 13:49:47,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:49:47,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918393242] [2021-11-23 13:49:47,132 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:49:47,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945408083] [2021-11-23 13:49:47,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945408083] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:49:47,135 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:49:47,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:49:47,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595775236] [2021-11-23 13:49:47,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:49:47,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:49:47,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:49:47,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:49:47,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:49:47,143 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:49:47,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:49:47,323 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2021-11-23 13:49:47,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:49:47,324 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-23 13:49:47,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:49:47,326 INFO L225 Difference]: With dead ends: 54 [2021-11-23 13:49:47,342 INFO L226 Difference]: Without dead ends: 52 [2021-11-23 13:49:47,343 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:49:47,345 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 13 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:49:47,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 95 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:49:47,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-11-23 13:49:47,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 42. [2021-11-23 13:49:47,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 35 states have (on average 1.3142857142857143) internal successors, (46), 41 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 13:49:47,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2021-11-23 13:49:47,356 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 8 [2021-11-23 13:49:47,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:49:47,357 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2021-11-23 13:49:47,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:49:47,358 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2021-11-23 13:49:47,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-23 13:49:47,359 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:49:47,359 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:49:47,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e323460-0d56-4ee4-9ca8-585d61609586/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 13:49:47,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e323460-0d56-4ee4-9ca8-585d61609586/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:49:47,586 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-23 13:49:47,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:49:47,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1182908747, now seen corresponding path program 1 times [2021-11-23 13:49:47,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:49:47,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029202161] [2021-11-23 13:49:47,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:49:47,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:49:47,609 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:49:47,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [110236] [2021-11-23 13:49:47,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:49:47,626 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:49:47,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e323460-0d56-4ee4-9ca8-585d61609586/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:49:47,643 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e323460-0d56-4ee4-9ca8-585d61609586/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:49:47,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e323460-0d56-4ee4-9ca8-585d61609586/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 13:49:47,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:49:47,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 13:49:47,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:49:47,766 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 13:49:47,766 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 13:49:47,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:49:47,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029202161] [2021-11-23 13:49:47,767 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:49:47,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110236] [2021-11-23 13:49:47,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110236] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:49:47,768 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:49:47,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:49:47,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196210972] [2021-11-23 13:49:47,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:49:47,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:49:47,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:49:47,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:49:47,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:49:47,771 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 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 13:49:47,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:49:47,792 INFO L93 Difference]: Finished difference Result 46 states and 49 transitions. [2021-11-23 13:49:47,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:49:47,793 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 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) Word has length 9 [2021-11-23 13:49:47,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:49:47,795 INFO L225 Difference]: With dead ends: 46 [2021-11-23 13:49:47,795 INFO L226 Difference]: Without dead ends: 42 [2021-11-23 13:49:47,795 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:49:47,797 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 0 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:49:47,798 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 113 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:49:47,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-11-23 13:49:47,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-11-23 13:49:47,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 35 states have (on average 1.2857142857142858) internal successors, (45), 41 states have internal predecessors, (45), 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 13:49:47,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2021-11-23 13:49:47,807 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 9 [2021-11-23 13:49:47,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:49:47,808 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2021-11-23 13:49:47,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 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 13:49:47,808 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2021-11-23 13:49:47,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-23 13:49:47,809 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:49:47,809 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:49:47,854 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e323460-0d56-4ee4-9ca8-585d61609586/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 13:49:48,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e323460-0d56-4ee4-9ca8-585d61609586/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:49:48,034 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-23 13:49:48,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:49:48,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1985334737, now seen corresponding path program 1 times [2021-11-23 13:49:48,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:49:48,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441490952] [2021-11-23 13:49:48,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:49:48,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:49:48,061 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:49:48,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [919778138] [2021-11-23 13:49:48,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:49:48,062 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:49:48,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e323460-0d56-4ee4-9ca8-585d61609586/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:49:48,064 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e323460-0d56-4ee4-9ca8-585d61609586/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:49:48,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e323460-0d56-4ee4-9ca8-585d61609586/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 13:49:48,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:49:48,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 13:49:48,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:49:48,236 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 13:49:48,236 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 13:49:48,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:49:48,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441490952] [2021-11-23 13:49:48,237 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:49:48,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919778138] [2021-11-23 13:49:48,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919778138] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:49:48,238 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:49:48,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:49:48,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73275686] [2021-11-23 13:49:48,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:49:48,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:49:48,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:49:48,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:49:48,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:49:48,241 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 13:49:48,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:49:48,368 INFO L93 Difference]: Finished difference Result 78 states and 85 transitions. [2021-11-23 13:49:48,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:49:48,371 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 10 [2021-11-23 13:49:48,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:49:48,373 INFO L225 Difference]: With dead ends: 78 [2021-11-23 13:49:48,376 INFO L226 Difference]: Without dead ends: 70 [2021-11-23 13:49:48,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:49:48,379 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 35 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:49:48,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 86 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:49:48,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-11-23 13:49:48,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 57. [2021-11-23 13:49:48,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 50 states have (on average 1.3) internal successors, (65), 56 states have internal predecessors, (65), 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 13:49:48,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 65 transitions. [2021-11-23 13:49:48,402 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 65 transitions. Word has length 10 [2021-11-23 13:49:48,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:49:48,402 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 65 transitions. [2021-11-23 13:49:48,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 13:49:48,403 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 65 transitions. [2021-11-23 13:49:48,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-23 13:49:48,404 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:49:48,404 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:49:48,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e323460-0d56-4ee4-9ca8-585d61609586/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 13:49:48,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e323460-0d56-4ee4-9ca8-585d61609586/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:49:48,621 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-23 13:49:48,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:49:48,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1468706587, now seen corresponding path program 1 times [2021-11-23 13:49:48,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:49:48,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572172852] [2021-11-23 13:49:48,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:49:48,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:49:48,635 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:49:48,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2126001875] [2021-11-23 13:49:48,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:49:48,636 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:49:48,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e323460-0d56-4ee4-9ca8-585d61609586/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:49:48,637 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e323460-0d56-4ee4-9ca8-585d61609586/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:49:48,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e323460-0d56-4ee4-9ca8-585d61609586/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 13:49:48,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:49:48,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 13:49:48,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:49:48,790 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 13:49:48,790 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 13:49:48,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:49:48,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572172852] [2021-11-23 13:49:48,791 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:49:48,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126001875] [2021-11-23 13:49:48,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126001875] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:49:48,792 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:49:48,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:49:48,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007199798] [2021-11-23 13:49:48,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:49:48,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:49:48,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:49:48,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:49:48,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:49:48,795 INFO L87 Difference]: Start difference. First operand 57 states and 65 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 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 13:49:48,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:49:48,934 INFO L93 Difference]: Finished difference Result 111 states and 130 transitions. [2021-11-23 13:49:48,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:49:48,939 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-23 13:49:48,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:49:48,941 INFO L225 Difference]: With dead ends: 111 [2021-11-23 13:49:48,941 INFO L226 Difference]: Without dead ends: 105 [2021-11-23 13:49:48,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:49:48,943 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 35 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:49:48,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 94 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:49:48,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-11-23 13:49:48,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 81. [2021-11-23 13:49:48,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 74 states have (on average 1.3108108108108107) internal successors, (97), 80 states have internal predecessors, (97), 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 13:49:48,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 97 transitions. [2021-11-23 13:49:48,961 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 97 transitions. Word has length 15 [2021-11-23 13:49:48,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:49:48,962 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 97 transitions. [2021-11-23 13:49:48,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 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 13:49:48,962 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 97 transitions. [2021-11-23 13:49:48,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-23 13:49:48,963 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:49:48,964 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:49:49,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e323460-0d56-4ee4-9ca8-585d61609586/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 13:49:49,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e323460-0d56-4ee4-9ca8-585d61609586/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:49:49,190 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-23 13:49:49,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:49:49,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1025421500, now seen corresponding path program 1 times [2021-11-23 13:49:49,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:49:49,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653019464] [2021-11-23 13:49:49,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:49:49,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:49:49,205 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:49:49,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [535533228] [2021-11-23 13:49:49,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:49:49,206 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:49:49,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e323460-0d56-4ee4-9ca8-585d61609586/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:49:49,207 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e323460-0d56-4ee4-9ca8-585d61609586/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:49:49,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e323460-0d56-4ee4-9ca8-585d61609586/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 13:49:49,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:49:49,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 13:49:49,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:49:49,343 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:49:49,343 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 13:49:49,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:49:49,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653019464] [2021-11-23 13:49:49,344 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:49:49,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535533228] [2021-11-23 13:49:49,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535533228] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:49:49,344 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:49:49,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:49:49,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346358231] [2021-11-23 13:49:49,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:49:49,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 13:49:49,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:49:49,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:49:49,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:49:49,347 INFO L87 Difference]: Start difference. First operand 81 states and 97 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 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 13:49:49,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:49:49,372 INFO L93 Difference]: Finished difference Result 130 states and 154 transitions. [2021-11-23 13:49:49,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:49:49,373 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-23 13:49:49,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:49:49,374 INFO L225 Difference]: With dead ends: 130 [2021-11-23 13:49:49,374 INFO L226 Difference]: Without dead ends: 81 [2021-11-23 13:49:49,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:49:49,376 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 3 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:49:49,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 117 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:49:49,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-11-23 13:49:49,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2021-11-23 13:49:49,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 74 states have (on average 1.2972972972972974) internal successors, (96), 80 states have internal predecessors, (96), 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 13:49:49,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 96 transitions. [2021-11-23 13:49:49,390 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 96 transitions. Word has length 19 [2021-11-23 13:49:49,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:49:49,390 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 96 transitions. [2021-11-23 13:49:49,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 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 13:49:49,391 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 96 transitions. [2021-11-23 13:49:49,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-23 13:49:49,392 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:49:49,392 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:49:49,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e323460-0d56-4ee4-9ca8-585d61609586/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-23 13:49:49,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e323460-0d56-4ee4-9ca8-585d61609586/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-23 13:49:49,616 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-23 13:49:49,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:49:49,616 INFO L85 PathProgramCache]: Analyzing trace with hash -488086197, now seen corresponding path program 1 times [2021-11-23 13:49:49,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:49:49,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478390182] [2021-11-23 13:49:49,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:49:49,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:49:49,628 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:49:49,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [665322184] [2021-11-23 13:49:49,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:49:49,628 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:49:49,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e323460-0d56-4ee4-9ca8-585d61609586/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:49:49,630 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e323460-0d56-4ee4-9ca8-585d61609586/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:49:49,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e323460-0d56-4ee4-9ca8-585d61609586/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-23 13:49:49,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:49:49,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 13:49:49,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:49:49,835 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 13:49:49,835 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 13:49:49,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:49:49,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478390182] [2021-11-23 13:49:49,837 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:49:49,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665322184] [2021-11-23 13:49:49,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665322184] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:49:49,838 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:49:49,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 13:49:49,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377278983] [2021-11-23 13:49:49,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:49:49,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 13:49:49,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:49:49,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 13:49:49,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:49:49,858 INFO L87 Difference]: Start difference. First operand 81 states and 96 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:49:50,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:49:50,028 INFO L93 Difference]: Finished difference Result 88 states and 105 transitions. [2021-11-23 13:49:50,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 13:49:50,029 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-23 13:49:50,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:49:50,030 INFO L225 Difference]: With dead ends: 88 [2021-11-23 13:49:50,031 INFO L226 Difference]: Without dead ends: 86 [2021-11-23 13:49:50,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-23 13:49:50,032 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 84 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:49:50,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 58 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:49:50,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-11-23 13:49:50,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 79. [2021-11-23 13:49:50,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 73 states have (on average 1.2465753424657535) internal successors, (91), 78 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:49:50,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 91 transitions. [2021-11-23 13:49:50,048 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 91 transitions. Word has length 19 [2021-11-23 13:49:50,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:49:50,048 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 91 transitions. [2021-11-23 13:49:50,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:49:50,049 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 91 transitions. [2021-11-23 13:49:50,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-23 13:49:50,050 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:49:50,050 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:49:50,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e323460-0d56-4ee4-9ca8-585d61609586/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-23 13:49:50,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e323460-0d56-4ee4-9ca8-585d61609586/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:49:50,262 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-23 13:49:50,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:49:50,263 INFO L85 PathProgramCache]: Analyzing trace with hash -538076749, now seen corresponding path program 1 times [2021-11-23 13:49:50,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:49:50,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224848850] [2021-11-23 13:49:50,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:49:50,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:49:50,284 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:49:50,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [838769876] [2021-11-23 13:49:50,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:49:50,285 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:49:50,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e323460-0d56-4ee4-9ca8-585d61609586/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:49:50,287 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e323460-0d56-4ee4-9ca8-585d61609586/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:49:50,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e323460-0d56-4ee4-9ca8-585d61609586/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-23 13:49:50,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:49:50,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 13:49:50,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:49:50,553 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:49:50,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:49:50,714 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:49:50,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:49:50,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224848850] [2021-11-23 13:49:50,715 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:49:50,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838769876] [2021-11-23 13:49:50,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838769876] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:49:50,716 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 13:49:50,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-11-23 13:49:50,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738336951] [2021-11-23 13:49:50,717 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 13:49:50,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 13:49:50,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:49:50,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 13:49:50,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-23 13:49:50,719 INFO L87 Difference]: Start difference. First operand 79 states and 91 transitions. Second operand has 10 states, 10 states have (on average 4.9) internal successors, (49), 9 states have internal predecessors, (49), 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 13:49:50,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:49:50,845 INFO L93 Difference]: Finished difference Result 224 states and 256 transitions. [2021-11-23 13:49:50,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-23 13:49:50,846 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 9 states have internal predecessors, (49), 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 13:49:50,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:49:50,849 INFO L225 Difference]: With dead ends: 224 [2021-11-23 13:49:50,849 INFO L226 Difference]: Without dead ends: 220 [2021-11-23 13:49:50,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2021-11-23 13:49:50,851 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 154 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:49:50,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 247 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:49:50,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-11-23 13:49:50,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 162. [2021-11-23 13:49:50,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 156 states have (on average 1.2820512820512822) internal successors, (200), 161 states have internal predecessors, (200), 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 13:49:50,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 200 transitions. [2021-11-23 13:49:50,881 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 200 transitions. Word has length 26 [2021-11-23 13:49:50,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:49:50,891 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 200 transitions. [2021-11-23 13:49:50,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 9 states have internal predecessors, (49), 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 13:49:50,892 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 200 transitions. [2021-11-23 13:49:50,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-23 13:49:50,893 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:49:50,893 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:49:50,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e323460-0d56-4ee4-9ca8-585d61609586/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-23 13:49:51,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e323460-0d56-4ee4-9ca8-585d61609586/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-23 13:49:51,094 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-23 13:49:51,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:49:51,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1121523260, now seen corresponding path program 1 times [2021-11-23 13:49:51,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:49:51,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429157807] [2021-11-23 13:49:51,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:49:51,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:49:51,106 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:49:51,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [719406029] [2021-11-23 13:49:51,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:49:51,106 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:49:51,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e323460-0d56-4ee4-9ca8-585d61609586/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:49:51,113 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e323460-0d56-4ee4-9ca8-585d61609586/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:49:51,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e323460-0d56-4ee4-9ca8-585d61609586/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-23 13:49:51,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:49:51,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-23 13:49:51,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:49:51,532 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:49:51,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:49:51,677 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:49:51,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:49:51,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429157807] [2021-11-23 13:49:51,678 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:49:51,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719406029] [2021-11-23 13:49:51,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [719406029] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:49:51,679 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 13:49:51,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 10 [2021-11-23 13:49:51,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040978455] [2021-11-23 13:49:51,679 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 13:49:51,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 13:49:51,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:49:51,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 13:49:51,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-11-23 13:49:51,682 INFO L87 Difference]: Start difference. First operand 162 states and 200 transitions. Second operand has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 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 13:49:52,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:49:52,127 INFO L93 Difference]: Finished difference Result 222 states and 267 transitions. [2021-11-23 13:49:52,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 13:49:52,130 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 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 13:49:52,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:49:52,132 INFO L225 Difference]: With dead ends: 222 [2021-11-23 13:49:52,133 INFO L226 Difference]: Without dead ends: 216 [2021-11-23 13:49:52,134 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2021-11-23 13:49:52,135 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 249 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 13:49:52,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [249 Valid, 126 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 13:49:52,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-11-23 13:49:52,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 130. [2021-11-23 13:49:52,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 127 states have (on average 1.1968503937007875) internal successors, (152), 129 states have internal predecessors, (152), 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 13:49:52,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 152 transitions. [2021-11-23 13:49:52,159 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 152 transitions. Word has length 26 [2021-11-23 13:49:52,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:49:52,160 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 152 transitions. [2021-11-23 13:49:52,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 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 13:49:52,160 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 152 transitions. [2021-11-23 13:49:52,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-23 13:49:52,162 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:49:52,162 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:49:52,205 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e323460-0d56-4ee4-9ca8-585d61609586/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-23 13:49:52,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e323460-0d56-4ee4-9ca8-585d61609586/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:49:52,386 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-23 13:49:52,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:49:52,387 INFO L85 PathProgramCache]: Analyzing trace with hash 498689735, now seen corresponding path program 1 times [2021-11-23 13:49:52,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:49:52,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041539834] [2021-11-23 13:49:52,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:49:52,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:49:52,399 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:49:52,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1890008207] [2021-11-23 13:49:52,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:49:52,399 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:49:52,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e323460-0d56-4ee4-9ca8-585d61609586/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:49:52,401 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e323460-0d56-4ee4-9ca8-585d61609586/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:49:52,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e323460-0d56-4ee4-9ca8-585d61609586/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-23 13:49:52,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:49:52,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-23 13:49:52,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:49:52,743 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:49:52,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:49:52,926 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:49:52,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:49:52,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041539834] [2021-11-23 13:49:52,927 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:49:52,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890008207] [2021-11-23 13:49:52,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890008207] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:49:52,928 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 13:49:52,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-11-23 13:49:52,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238332837] [2021-11-23 13:49:52,928 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 13:49:52,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 13:49:52,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:49:52,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 13:49:52,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:49:52,932 INFO L87 Difference]: Start difference. First operand 130 states and 152 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:49:53,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:49:53,277 INFO L93 Difference]: Finished difference Result 170 states and 199 transitions. [2021-11-23 13:49:53,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 13:49:53,278 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-23 13:49:53,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:49:53,279 INFO L225 Difference]: With dead ends: 170 [2021-11-23 13:49:53,279 INFO L226 Difference]: Without dead ends: 0 [2021-11-23 13:49:53,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-11-23 13:49:53,282 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 122 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 13:49:53,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 55 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 13:49:53,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-23 13:49:53,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-23 13:49:53,284 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 13:49:53,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-23 13:49:53,284 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2021-11-23 13:49:53,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:49:53,285 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-23 13:49:53,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:49:53,285 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-23 13:49:53,286 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-23 13:49:53,289 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2021-11-23 13:49:53,289 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2021-11-23 13:49:53,290 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2021-11-23 13:49:53,290 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2021-11-23 13:49:53,290 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2021-11-23 13:49:53,291 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2021-11-23 13:49:53,291 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2021-11-23 13:49:53,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e323460-0d56-4ee4-9ca8-585d61609586/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-23 13:49:53,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e323460-0d56-4ee4-9ca8-585d61609586/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:49:53,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-23 13:49:55,273 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-11-23 13:49:55,274 INFO L858 garLoopResultBuilder]: For program point L11(lines 11 13) no Hoare annotation was computed. [2021-11-23 13:49:55,274 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-11-23 13:49:55,274 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-23 13:49:55,274 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-23 13:49:55,274 INFO L858 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2021-11-23 13:49:55,274 INFO L858 garLoopResultBuilder]: For program point L37-1(lines 37 61) no Hoare annotation was computed. [2021-11-23 13:49:55,275 INFO L854 garLoopResultBuilder]: At program point L37-3(lines 37 61) the Hoare annotation is: (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~r~0#1|) |ULTIMATE.start_main_~x~0#1|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|) |ULTIMATE.start_main_~b~0#1|)) [2021-11-23 13:49:55,275 INFO L858 garLoopResultBuilder]: For program point L37-4(lines 37 61) no Hoare annotation was computed. [2021-11-23 13:49:55,275 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-11-23 13:49:55,275 INFO L858 garLoopResultBuilder]: For program point L46-1(lines 46 58) no Hoare annotation was computed. [2021-11-23 13:49:55,275 INFO L854 garLoopResultBuilder]: At program point L46-3(lines 46 58) the Hoare annotation is: (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~r~0#1|) |ULTIMATE.start_main_~x~0#1|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|) |ULTIMATE.start_main_~b~0#1|) (<= 1 |ULTIMATE.start___VERIFIER_assert_~cond#1|) (<= 1 |ULTIMATE.start_main_~r~0#1|)) [2021-11-23 13:49:55,275 INFO L858 garLoopResultBuilder]: For program point L46-4(lines 46 58) no Hoare annotation was computed. [2021-11-23 13:49:55,275 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-11-23 13:49:55,276 INFO L861 garLoopResultBuilder]: At program point L64(lines 23 65) the Hoare annotation is: true [2021-11-23 13:49:55,276 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-11-23 13:49:55,276 INFO L858 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2021-11-23 13:49:55,277 INFO L854 garLoopResultBuilder]: At program point L15-2(lines 14 20) the Hoare annotation is: (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~r~0#1|) |ULTIMATE.start_main_~x~0#1|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|) |ULTIMATE.start_main_~b~0#1|) (<= 1 |ULTIMATE.start___VERIFIER_assert_~cond#1|)) [2021-11-23 13:49:55,277 INFO L858 garLoopResultBuilder]: For program point L15-3(lines 15 18) no Hoare annotation was computed. [2021-11-23 13:49:55,277 INFO L854 garLoopResultBuilder]: At program point L15-5(lines 14 20) the Hoare annotation is: (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~r~0#1|) |ULTIMATE.start_main_~x~0#1|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|) |ULTIMATE.start_main_~b~0#1|) (<= 1 |ULTIMATE.start___VERIFIER_assert_~cond#1|)) [2021-11-23 13:49:55,278 INFO L858 garLoopResultBuilder]: For program point L15-6(lines 15 18) no Hoare annotation was computed. [2021-11-23 13:49:55,278 INFO L854 garLoopResultBuilder]: At program point L15-8(lines 14 20) the Hoare annotation is: (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~r~0#1|) |ULTIMATE.start_main_~x~0#1|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|) |ULTIMATE.start_main_~b~0#1|) (<= 1 |ULTIMATE.start___VERIFIER_assert_~cond#1|) (<= 1 |ULTIMATE.start_main_~r~0#1|)) [2021-11-23 13:49:55,278 INFO L858 garLoopResultBuilder]: For program point L15-9(lines 15 18) no Hoare annotation was computed. [2021-11-23 13:49:55,278 INFO L854 garLoopResultBuilder]: At program point L15-11(lines 14 20) the Hoare annotation is: (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~r~0#1|) |ULTIMATE.start_main_~x~0#1|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|) |ULTIMATE.start_main_~b~0#1|) (<= 1 |ULTIMATE.start___VERIFIER_assert_~cond#1|) (<= 1 |ULTIMATE.start_main_~r~0#1|)) [2021-11-23 13:49:55,279 INFO L858 garLoopResultBuilder]: For program point L15-12(lines 15 18) no Hoare annotation was computed. [2021-11-23 13:49:55,279 INFO L854 garLoopResultBuilder]: At program point L15-14(lines 14 20) the Hoare annotation is: (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~r~0#1|) |ULTIMATE.start_main_~x~0#1|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|) |ULTIMATE.start_main_~b~0#1|) (<= 1 |ULTIMATE.start___VERIFIER_assert_~cond#1|) (<= 1 |ULTIMATE.start_main_~r~0#1|)) [2021-11-23 13:49:55,279 INFO L858 garLoopResultBuilder]: For program point L15-15(lines 15 18) no Hoare annotation was computed. [2021-11-23 13:49:55,279 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-23 13:49:55,280 INFO L854 garLoopResultBuilder]: At program point L15-17(lines 14 20) the Hoare annotation is: (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~r~0#1|) |ULTIMATE.start_main_~x~0#1|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|) |ULTIMATE.start_main_~b~0#1|) (<= 1 |ULTIMATE.start___VERIFIER_assert_~cond#1|) (<= 1 |ULTIMATE.start_main_~r~0#1|)) [2021-11-23 13:49:55,280 INFO L858 garLoopResultBuilder]: For program point L15-18(lines 15 18) no Hoare annotation was computed. [2021-11-23 13:49:55,280 INFO L861 garLoopResultBuilder]: At program point L15-20(lines 14 20) the Hoare annotation is: true [2021-11-23 13:49:55,280 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-11-23 13:49:55,280 INFO L858 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2021-11-23 13:49:55,281 INFO L858 garLoopResultBuilder]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2021-11-23 13:49:55,281 INFO L858 garLoopResultBuilder]: For program point L16-2(lines 16 17) no Hoare annotation was computed. [2021-11-23 13:49:55,281 INFO L858 garLoopResultBuilder]: For program point L16-3(lines 16 17) no Hoare annotation was computed. [2021-11-23 13:49:55,281 INFO L858 garLoopResultBuilder]: For program point L16-4(lines 16 17) no Hoare annotation was computed. [2021-11-23 13:49:55,281 INFO L858 garLoopResultBuilder]: For program point L16-5(lines 16 17) no Hoare annotation was computed. [2021-11-23 13:49:55,282 INFO L858 garLoopResultBuilder]: For program point L16-6(lines 16 17) no Hoare annotation was computed. [2021-11-23 13:49:55,282 INFO L858 garLoopResultBuilder]: For program point L41(lines 41 42) no Hoare annotation was computed. [2021-11-23 13:49:55,282 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-23 13:49:55,282 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-11-23 13:49:55,283 INFO L858 garLoopResultBuilder]: For program point L51(lines 51 52) no Hoare annotation was computed. [2021-11-23 13:49:55,287 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:49:55,289 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 13:49:55,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 01:49:55 BoogieIcfgContainer [2021-11-23 13:49:55,315 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 13:49:55,315 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 13:49:55,316 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 13:49:55,316 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 13:49:55,317 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:49:46" (3/4) ... [2021-11-23 13:49:55,321 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-23 13:49:55,336 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-11-23 13:49:55,336 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-23 13:49:55,337 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-23 13:49:55,337 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-23 13:49:55,389 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e323460-0d56-4ee4-9ca8-585d61609586/bin/uautomizer-wIGwrQj20G/witness.graphml [2021-11-23 13:49:55,390 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 13:49:55,391 INFO L158 Benchmark]: Toolchain (without parser) took 10084.27ms. Allocated memory was 107.0MB in the beginning and 142.6MB in the end (delta: 35.7MB). Free memory was 67.6MB in the beginning and 61.8MB in the end (delta: 5.8MB). Peak memory consumption was 41.1MB. Max. memory is 16.1GB. [2021-11-23 13:49:55,391 INFO L158 Benchmark]: CDTParser took 0.42ms. Allocated memory is still 107.0MB. Free memory is still 83.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 13:49:55,392 INFO L158 Benchmark]: CACSL2BoogieTranslator took 444.79ms. Allocated memory is still 107.0MB. Free memory was 67.4MB in the beginning and 81.4MB in the end (delta: -14.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 13:49:55,392 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.88ms. Allocated memory is still 107.0MB. Free memory was 81.4MB in the beginning and 79.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 13:49:55,393 INFO L158 Benchmark]: Boogie Preprocessor took 31.21ms. Allocated memory is still 107.0MB. Free memory was 79.6MB in the beginning and 78.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 13:49:55,393 INFO L158 Benchmark]: RCFGBuilder took 396.86ms. Allocated memory is still 107.0MB. Free memory was 78.4MB in the beginning and 67.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 13:49:55,394 INFO L158 Benchmark]: TraceAbstraction took 9079.16ms. Allocated memory was 107.0MB in the beginning and 142.6MB in the end (delta: 35.7MB). Free memory was 67.1MB in the beginning and 65.0MB in the end (delta: 2.1MB). Peak memory consumption was 69.4MB. Max. memory is 16.1GB. [2021-11-23 13:49:55,395 INFO L158 Benchmark]: Witness Printer took 74.45ms. Allocated memory is still 142.6MB. Free memory was 65.0MB in the beginning and 61.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 13:49:55,397 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42ms. Allocated memory is still 107.0MB. Free memory is still 83.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 444.79ms. Allocated memory is still 107.0MB. Free memory was 67.4MB in the beginning and 81.4MB in the end (delta: -14.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.88ms. Allocated memory is still 107.0MB. Free memory was 81.4MB in the beginning and 79.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.21ms. Allocated memory is still 107.0MB. Free memory was 79.6MB in the beginning and 78.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 396.86ms. Allocated memory is still 107.0MB. Free memory was 78.4MB in the beginning and 67.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 9079.16ms. Allocated memory was 107.0MB in the beginning and 142.6MB in the end (delta: 35.7MB). Free memory was 67.1MB in the beginning and 65.0MB in the end (delta: 2.1MB). Peak memory consumption was 69.4MB. Max. memory is 16.1GB. * Witness Printer took 74.45ms. Allocated memory is still 142.6MB. Free memory was 65.0MB in the beginning and 61.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. 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: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: 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, 43 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 9.0s, OverallIterations: 10, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.8s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 695 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 695 mSDsluCounter, 1037 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 675 mSDsCounter, 177 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 480 IncrementalHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 177 mSolverCounterUnsat, 362 mSDtfsCounter, 480 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 260 GetRequests, 194 SyntacticMatches, 4 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=162occurred in iteration=8, InterpolantAutomatonStates: 65, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 198 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 10 PreInvPairs, 75 NumberOfFragments, 190 HoareAnnotationTreeSize, 10 FomulaSimplifications, 27 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 10 FomulaSimplificationsInter, 4761 FormulaSimplificationTreeSizeReductionInter, 1.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 167 NumberOfCodeBlocks, 167 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 233 ConstructedInterpolants, 0 QuantifiedInterpolants, 1033 SizeOfPredicates, 39 NumberOfNonLiveVariables, 742 ConjunctsInSsa, 83 ConjunctsInUnsatCore, 13 InterpolantComputations, 7 PerfectInterpolantSequences, 4/22 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 7 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((cond == 1 && y * q + r == x) && 1 <= y) && y * a == b) && 1 <= cond) && 1 <= r - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((cond == 1 && y * q + r == x) && 1 <= y) && y * a == b) && 1 <= cond) && 1 <= r - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((cond == 1 && y * q + r == x) && 1 <= y) && y * a == b) && 1 <= cond) && 1 <= r - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((cond == 1 && y * q + r == x) && 1 <= y) && y * a == b) && 1 <= cond) && 1 <= r - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: ((((cond == 1 && y * q + r == x) && 1 <= y) && y * a == b) && 1 <= cond) && 1 <= r - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((cond == 1 && y * q + r == x) && 1 <= y) && y * a == b) && 1 <= cond - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: ((cond == 1 && y * q + r == x) && 1 <= y) && y * a == b - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((cond == 1 && y * q + r == x) && 1 <= y) && y * a == b) && 1 <= cond RESULT: Ultimate proved your program to be correct! [2021-11-23 13:49:55,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e323460-0d56-4ee4-9ca8-585d61609586/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