./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/bin/uautomizer-ug76WZFUDN --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 53086523abe0dc699ccd28b0916f17f8825d4641577f06835b9d81e9579a444f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 11:19:10,653 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:19:10,657 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:19:10,710 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:19:10,711 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:19:10,716 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:19:10,720 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:19:10,723 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:19:10,726 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:19:10,733 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:19:10,735 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:19:10,739 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:19:10,739 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:19:10,743 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:19:10,745 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:19:10,749 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:19:10,751 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:19:10,752 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:19:10,754 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:19:10,762 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:19:10,764 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:19:10,767 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:19:10,769 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:19:10,771 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:19:10,784 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:19:10,784 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:19:10,785 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:19:10,787 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:19:10,788 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:19:10,789 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:19:10,790 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:19:10,793 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:19:10,795 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:19:10,797 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:19:10,798 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:19:10,799 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:19:10,800 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:19:10,801 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:19:10,801 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:19:10,823 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:19:10,824 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:19:10,825 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 11:19:10,898 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:19:10,898 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:19:10,899 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:19:10,900 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:19:10,901 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:19:10,901 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:19:10,902 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:19:10,903 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:19:10,903 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:19:10,903 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:19:10,904 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:19:10,905 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:19:10,905 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:19:10,905 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:19:10,905 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:19:10,906 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:19:10,906 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:19:10,906 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:19:10,906 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:19:10,907 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:19:10,907 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:19:10,907 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:19:10,907 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:19:10,907 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:19:10,908 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:19:10,908 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:19:10,908 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:19:10,908 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:19:10,909 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:19:10,909 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:19:10,909 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:19:10,909 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:19:10,909 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:19:10,910 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_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 53086523abe0dc699ccd28b0916f17f8825d4641577f06835b9d81e9579a444f [2022-11-20 11:19:11,193 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:19:11,220 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:19:11,223 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:19:11,225 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:19:11,225 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:19:11,227 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound10.c [2022-11-20 11:19:15,184 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:19:15,493 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:19:15,494 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound10.c [2022-11-20 11:19:15,502 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/bin/uautomizer-ug76WZFUDN/data/fb52cb607/826ca28bddcf4121938ad65df4c1cc28/FLAGbca32e964 [2022-11-20 11:19:15,520 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/bin/uautomizer-ug76WZFUDN/data/fb52cb607/826ca28bddcf4121938ad65df4c1cc28 [2022-11-20 11:19:15,523 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:19:15,525 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:19:15,532 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:19:15,532 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:19:15,537 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:19:15,538 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:19:15" (1/1) ... [2022-11-20 11:19:15,539 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71c01bba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:19:15, skipping insertion in model container [2022-11-20 11:19:15,539 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:19:15" (1/1) ... [2022-11-20 11:19:15,549 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:19:15,570 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:19:15,769 WARN L237 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_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound10.c[458,471] [2022-11-20 11:19:15,795 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:19:15,808 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:19:15,824 WARN L237 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_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound10.c[458,471] [2022-11-20 11:19:15,841 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:19:15,859 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:19:15,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:19:15 WrapperNode [2022-11-20 11:19:15,860 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:19:15,861 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:19:15,862 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:19:15,862 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:19:15,872 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:19:15" (1/1) ... [2022-11-20 11:19:15,885 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:19:15" (1/1) ... [2022-11-20 11:19:15,911 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 38 [2022-11-20 11:19:15,912 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:19:15,913 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:19:15,913 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:19:15,913 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:19:15,924 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:19:15" (1/1) ... [2022-11-20 11:19:15,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:19:15" (1/1) ... [2022-11-20 11:19:15,939 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:19:15" (1/1) ... [2022-11-20 11:19:15,940 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:19:15" (1/1) ... [2022-11-20 11:19:15,943 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:19:15" (1/1) ... [2022-11-20 11:19:15,947 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:19:15" (1/1) ... [2022-11-20 11:19:15,948 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:19:15" (1/1) ... [2022-11-20 11:19:15,949 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:19:15" (1/1) ... [2022-11-20 11:19:15,951 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:19:15,952 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:19:15,952 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:19:15,953 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:19:15,954 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:19:15" (1/1) ... [2022-11-20 11:19:15,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:19:15,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:19:16,000 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:19:16,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:19:16,055 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:19:16,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:19:16,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:19:16,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:19:16,056 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-20 11:19:16,056 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-20 11:19:16,149 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:19:16,157 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:19:16,399 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:19:16,406 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:19:16,410 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 11:19:16,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:19:16 BoogieIcfgContainer [2022-11-20 11:19:16,413 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:19:16,418 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:19:16,419 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:19:16,425 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:19:16,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:19:15" (1/3) ... [2022-11-20 11:19:16,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cd9a0ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:19:16, skipping insertion in model container [2022-11-20 11:19:16,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:19:15" (2/3) ... [2022-11-20 11:19:16,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cd9a0ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:19:16, skipping insertion in model container [2022-11-20 11:19:16,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:19:16" (3/3) ... [2022-11-20 11:19:16,433 INFO L112 eAbstractionObserver]: Analyzing ICFG ps4-ll_valuebound10.c [2022-11-20 11:19:16,459 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:19:16,460 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 11:19:16,554 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:19:16,565 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3b22d6d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:19:16,566 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 11:19:16,572 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 11:19:16,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 11:19:16,583 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:19:16,584 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:19:16,584 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:19:16,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:19:16,590 INFO L85 PathProgramCache]: Analyzing trace with hash -589436290, now seen corresponding path program 1 times [2022-11-20 11:19:16,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:19:16,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391275752] [2022-11-20 11:19:16,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:19:16,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:19:16,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:16,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:19:16,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391275752] [2022-11-20 11:19:16,740 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-20 11:19:16,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420103693] [2022-11-20 11:19:16,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:19:16,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:19:16,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:19:16,746 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:19:16,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:19:16,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:16,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-20 11:19:16,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:19:16,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:19:16,857 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:19:16,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420103693] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:19:16,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:19:16,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:19:16,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245347365] [2022-11-20 11:19:16,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:19:16,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 11:19:16,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:19:16,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 11:19:16,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 11:19:16,924 INFO L87 Difference]: Start difference. First operand has 19 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:19:16,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:19:16,967 INFO L93 Difference]: Finished difference Result 35 states and 49 transitions. [2022-11-20 11:19:16,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 11:19:16,970 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-20 11:19:16,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:19:16,982 INFO L225 Difference]: With dead ends: 35 [2022-11-20 11:19:16,982 INFO L226 Difference]: Without dead ends: 15 [2022-11-20 11:19:16,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 11:19:16,995 INFO L413 NwaCegarLoop]: 21 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, 21 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 [2022-11-20 11:19:16,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:19:17,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-20 11:19:17,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-11-20 11:19:17,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 11:19:17,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2022-11-20 11:19:17,053 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 9 [2022-11-20 11:19:17,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:19:17,054 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2022-11-20 11:19:17,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:19:17,056 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2022-11-20 11:19:17,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 11:19:17,058 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:19:17,058 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:19:17,073 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:19:17,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-20 11:19:17,266 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:19:17,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:19:17,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1187358532, now seen corresponding path program 1 times [2022-11-20 11:19:17,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:19:17,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255175785] [2022-11-20 11:19:17,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:19:17,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:19:17,288 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:19:17,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [673173508] [2022-11-20 11:19:17,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:19:17,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:19:17,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:19:17,291 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:19:17,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:19:17,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:17,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 11:19:17,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:19:17,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:19:17,525 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:19:17,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:19:17,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255175785] [2022-11-20 11:19:17,526 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:19:17,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673173508] [2022-11-20 11:19:17,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673173508] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:19:17,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:19:17,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:19:17,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327151769] [2022-11-20 11:19:17,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:19:17,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:19:17,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:19:17,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:19:17,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:19:17,552 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:19:17,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:19:17,808 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2022-11-20 11:19:17,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:19:17,811 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-20 11:19:17,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:19:17,812 INFO L225 Difference]: With dead ends: 26 [2022-11-20 11:19:17,812 INFO L226 Difference]: Without dead ends: 22 [2022-11-20 11:19:17,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:19:17,814 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 6 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:19:17,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 45 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:19:17,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-20 11:19:17,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-11-20 11:19:17,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 11:19:17,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2022-11-20 11:19:17,838 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 9 [2022-11-20 11:19:17,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:19:17,839 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2022-11-20 11:19:17,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:19:17,840 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2022-11-20 11:19:17,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 11:19:17,841 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:19:17,841 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:19:17,854 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:19:18,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:19:18,050 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:19:18,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:19:18,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1781398469, now seen corresponding path program 1 times [2022-11-20 11:19:18,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:19:18,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576846159] [2022-11-20 11:19:18,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:19:18,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:19:18,074 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:19:18,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1987159664] [2022-11-20 11:19:18,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:19:18,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:19:18,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:19:18,084 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:19:18,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 11:19:18,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:18,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-20 11:19:18,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:19:18,335 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:19:18,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:19:18,731 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:19:18,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:19:18,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576846159] [2022-11-20 11:19:18,732 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:19:18,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987159664] [2022-11-20 11:19:18,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987159664] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:19:18,733 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:19:18,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 11 [2022-11-20 11:19:18,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449019227] [2022-11-20 11:19:18,734 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:19:18,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 11:19:18,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:19:18,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 11:19:18,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:19:18,736 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 11:19:18,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:19:18,934 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2022-11-20 11:19:18,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:19:18,935 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2022-11-20 11:19:18,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:19:18,936 INFO L225 Difference]: With dead ends: 33 [2022-11-20 11:19:18,936 INFO L226 Difference]: Without dead ends: 27 [2022-11-20 11:19:18,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-11-20 11:19:18,938 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 24 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:19:18,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 39 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:19:18,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-20 11:19:18,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2022-11-20 11:19:18,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 11:19:18,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2022-11-20 11:19:18,965 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 16 [2022-11-20 11:19:18,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:19:18,965 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2022-11-20 11:19:18,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 11:19:18,966 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2022-11-20 11:19:18,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-20 11:19:18,967 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:19:18,967 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:19:18,975 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 11:19:19,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:19:19,168 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:19:19,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:19:19,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1711372296, now seen corresponding path program 1 times [2022-11-20 11:19:19,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:19:19,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425134083] [2022-11-20 11:19:19,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:19:19,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:19:19,184 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:19:19,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2098066726] [2022-11-20 11:19:19,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:19:19,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:19:19,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:19:19,186 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:19:19,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 11:19:19,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:19:19,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-20 11:19:19,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:19:19,466 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:19:19,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:20:00,363 WARN L859 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| Int)) (or (= (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8|) (* |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_3| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8|)) (= (mod (+ (* 3 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8|) (* 3 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8|) (* 2 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8|)) 4) 0)))) is different from true [2022-11-20 11:20:18,496 WARN L859 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| Int)) (or (= (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8|) (* |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_3| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8|)) (= (mod (+ (* 3 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8|) (* 3 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8|) (* 2 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8|)) 4) 0))) (= c___VERIFIER_assert_~cond 0)) is different from true [2022-11-20 11:20:24,585 WARN L837 $PredicateComparison]: unable to prove that (or (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (or (not (< |c_ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|)) (< (+ |c_ULTIMATE.start_main_~c~0#1| 1) |ULTIMATE.start_main_~k~0#1|) (= (+ |ULTIMATE.start_main_~k~0#1| (* |c_ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~k~0#1|)) (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 2) 1)))) (not (= (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 2) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3)) 4) 0))) is different from false [2022-11-20 11:20:26,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:20:26,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425134083] [2022-11-20 11:20:26,648 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:20:26,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098066726] [2022-11-20 11:20:26,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2098066726] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:20:26,649 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:20:26,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2022-11-20 11:20:26,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490160788] [2022-11-20 11:20:26,649 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 11:20:26,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 11:20:26,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:20:26,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 11:20:26,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=117, Unknown=9, NotChecked=72, Total=240 [2022-11-20 11:20:26,651 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand has 9 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 11:20:26,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:20:26,825 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2022-11-20 11:20:26,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:20:26,826 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2022-11-20 11:20:26,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:20:26,827 INFO L225 Difference]: With dead ends: 31 [2022-11-20 11:20:26,827 INFO L226 Difference]: Without dead ends: 26 [2022-11-20 11:20:26,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 24.4s TimeCoverageRelationStatistics Valid=62, Invalid=181, Unknown=9, NotChecked=90, Total=342 [2022-11-20 11:20:26,829 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 6 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:20:26,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 60 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:20:26,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-20 11:20:26,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-11-20 11:20:26,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 11:20:26,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2022-11-20 11:20:26,840 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 22 [2022-11-20 11:20:26,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:20:26,840 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2022-11-20 11:20:26,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 11:20:26,841 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2022-11-20 11:20:26,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-20 11:20:26,842 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:20:26,842 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:20:26,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 11:20:27,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:20:27,049 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:20:27,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:20:27,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1075497887, now seen corresponding path program 2 times [2022-11-20 11:20:27,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:20:27,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894795908] [2022-11-20 11:20:27,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:20:27,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:20:27,067 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:20:27,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1154434677] [2022-11-20 11:20:27,079 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:20:27,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:20:27,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:20:27,080 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:20:27,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 11:20:27,156 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:20:27,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:20:27,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-20 11:20:27,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:20:27,400 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 8 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 11:20:27,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:20:31,690 WARN L837 $PredicateComparison]: unable to prove that (or (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (or (not (< |c_ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|)) (< (+ |c_ULTIMATE.start_main_~c~0#1| 1) |ULTIMATE.start_main_~k~0#1|) (= (+ |ULTIMATE.start_main_~k~0#1| (* |c_ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~k~0#1|)) (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 2) 1)))) (not (= (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 2) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3)) 4) 0))) is different from false [2022-11-20 11:20:31,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:20:31,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894795908] [2022-11-20 11:20:31,697 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:20:31,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154434677] [2022-11-20 11:20:31,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154434677] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:20:31,697 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:20:31,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2022-11-20 11:20:31,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227436515] [2022-11-20 11:20:31,698 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 11:20:31,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:20:31,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:20:31,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:20:31,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=148, Unknown=1, NotChecked=24, Total=210 [2022-11-20 11:20:31,699 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 11:20:31,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:20:31,933 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2022-11-20 11:20:31,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:20:31,934 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 29 [2022-11-20 11:20:31,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:20:31,935 INFO L225 Difference]: With dead ends: 34 [2022-11-20 11:20:31,935 INFO L226 Difference]: Without dead ends: 29 [2022-11-20 11:20:31,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=56, Invalid=219, Unknown=1, NotChecked=30, Total=306 [2022-11-20 11:20:31,937 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 7 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:20:31,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 68 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:20:31,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-20 11:20:31,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-11-20 11:20:31,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 21 states have internal predecessors, (22), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-20 11:20:31,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2022-11-20 11:20:31,949 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 29 [2022-11-20 11:20:31,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:20:31,950 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2022-11-20 11:20:31,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 11:20:31,950 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2022-11-20 11:20:31,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 11:20:31,952 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:20:31,952 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:20:31,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 11:20:32,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:20:32,155 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:20:32,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:20:32,156 INFO L85 PathProgramCache]: Analyzing trace with hash 817917912, now seen corresponding path program 3 times [2022-11-20 11:20:32,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:20:32,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212791023] [2022-11-20 11:20:32,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:20:32,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:20:32,169 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:20:32,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [477842285] [2022-11-20 11:20:32,169 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:20:32,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:20:32,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:20:32,171 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:20:32,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 11:20:32,254 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-20 11:20:32,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:20:32,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-20 11:20:32,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:20:32,626 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 11:20:32,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:20:33,029 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-20 11:20:33,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:20:33,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212791023] [2022-11-20 11:20:33,030 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:20:33,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477842285] [2022-11-20 11:20:33,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477842285] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:20:33,031 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:20:33,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2022-11-20 11:20:33,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190741443] [2022-11-20 11:20:33,032 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:20:33,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 11:20:33,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:20:33,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 11:20:33,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:20:33,034 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 18 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 10 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-20 11:20:34,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:20:34,459 INFO L93 Difference]: Finished difference Result 47 states and 56 transitions. [2022-11-20 11:20:34,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 11:20:34,460 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 10 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 36 [2022-11-20 11:20:34,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:20:34,462 INFO L225 Difference]: With dead ends: 47 [2022-11-20 11:20:34,462 INFO L226 Difference]: Without dead ends: 41 [2022-11-20 11:20:34,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=187, Invalid=683, Unknown=0, NotChecked=0, Total=870 [2022-11-20 11:20:34,464 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 59 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:20:34,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 126 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 11:20:34,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-11-20 11:20:34,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-11-20 11:20:34,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 29 states have (on average 1.0344827586206897) internal successors, (30), 29 states have internal predecessors, (30), 9 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-20 11:20:34,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2022-11-20 11:20:34,498 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 36 [2022-11-20 11:20:34,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:20:34,498 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2022-11-20 11:20:34,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 10 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-20 11:20:34,499 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2022-11-20 11:20:34,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-20 11:20:34,500 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:20:34,500 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:20:34,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 11:20:34,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:20:34,708 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:20:34,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:20:34,716 INFO L85 PathProgramCache]: Analyzing trace with hash 385378200, now seen corresponding path program 4 times [2022-11-20 11:20:34,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:20:34,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538314539] [2022-11-20 11:20:34,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:20:34,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:20:34,743 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:20:34,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [149583040] [2022-11-20 11:20:34,747 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 11:20:34,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:20:34,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:20:34,749 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:20:34,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 11:20:34,854 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 11:20:34,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:20:34,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-20 11:20:34,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:20:35,247 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 36 proven. 85 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-11-20 11:20:35,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:21:09,535 WARN L859 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_18| Int) (|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| Int)) (or (= (mod (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| 3) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| 3) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| 2)) 4) 0) (= (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32|) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_18|))))) is different from true [2022-11-20 11:21:27,617 WARN L859 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_18| Int) (|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| Int)) (or (= (mod (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| 3) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| 3) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| 2)) 4) 0) (= (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32|) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_32| |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_18|)))) (= c___VERIFIER_assert_~cond 0)) is different from true [2022-11-20 11:21:33,689 WARN L837 $PredicateComparison]: unable to prove that (or (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (or (not (< |c_ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|)) (< (+ |c_ULTIMATE.start_main_~c~0#1| 1) |ULTIMATE.start_main_~k~0#1|) (= (+ |ULTIMATE.start_main_~k~0#1| (* |c_ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~k~0#1|)) (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 2) 1)))) (not (= (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 2) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3)) 4) 0))) is different from false [2022-11-20 11:21:35,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:21:35,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538314539] [2022-11-20 11:21:35,721 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:21:35,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149583040] [2022-11-20 11:21:35,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149583040] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:21:35,722 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:21:35,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2022-11-20 11:21:35,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732240139] [2022-11-20 11:21:35,722 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 11:21:35,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 11:21:35,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:21:35,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 11:21:35,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=293, Unknown=7, NotChecked=108, Total=462 [2022-11-20 11:21:35,725 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand has 15 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-20 11:21:36,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:21:36,252 INFO L93 Difference]: Finished difference Result 49 states and 56 transitions. [2022-11-20 11:21:36,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 11:21:36,253 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 64 [2022-11-20 11:21:36,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:21:36,254 INFO L225 Difference]: With dead ends: 49 [2022-11-20 11:21:36,254 INFO L226 Difference]: Without dead ends: 44 [2022-11-20 11:21:36,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 18.4s TimeCoverageRelationStatistics Valid=74, Invalid=393, Unknown=7, NotChecked=126, Total=600 [2022-11-20 11:21:36,256 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 6 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:21:36,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 186 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 11:21:36,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-11-20 11:21:36,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2022-11-20 11:21:36,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 states have internal predecessors, (32), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-20 11:21:36,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2022-11-20 11:21:36,277 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 64 [2022-11-20 11:21:36,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:21:36,278 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2022-11-20 11:21:36,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-20 11:21:36,278 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2022-11-20 11:21:36,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-20 11:21:36,280 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:21:36,280 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:21:36,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 11:21:36,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-20 11:21:36,488 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:21:36,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:21:36,488 INFO L85 PathProgramCache]: Analyzing trace with hash 2073985217, now seen corresponding path program 5 times [2022-11-20 11:21:36,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:21:36,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670581964] [2022-11-20 11:21:36,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:21:36,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:21:36,507 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:21:36,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [366856147] [2022-11-20 11:21:36,507 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 11:21:36,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:21:36,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:21:36,509 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:21:36,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 11:21:36,601 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2022-11-20 11:21:36,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:21:36,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-20 11:21:36,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:21:37,011 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 20 proven. 130 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-11-20 11:21:37,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:21:37,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:21:37,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670581964] [2022-11-20 11:21:37,298 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:21:37,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366856147] [2022-11-20 11:21:37,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [366856147] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:21:37,299 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:21:37,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2022-11-20 11:21:37,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250679293] [2022-11-20 11:21:37,299 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 11:21:37,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 11:21:37,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:21:37,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 11:21:37,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:21:37,302 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand has 16 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-20 11:21:37,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:21:37,892 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2022-11-20 11:21:37,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 11:21:37,892 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 71 [2022-11-20 11:21:37,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:21:37,893 INFO L225 Difference]: With dead ends: 52 [2022-11-20 11:21:37,894 INFO L226 Difference]: Without dead ends: 47 [2022-11-20 11:21:37,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2022-11-20 11:21:37,895 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 6 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:21:37,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 214 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 11:21:37,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-11-20 11:21:37,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2022-11-20 11:21:37,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 33 states have (on average 1.0303030303030303) internal successors, (34), 33 states have internal predecessors, (34), 11 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-20 11:21:37,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2022-11-20 11:21:37,919 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 71 [2022-11-20 11:21:37,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:21:37,920 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2022-11-20 11:21:37,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-20 11:21:37,920 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2022-11-20 11:21:37,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-20 11:21:37,922 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:21:37,922 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:21:37,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 11:21:38,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:21:38,130 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:21:38,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:21:38,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1353348984, now seen corresponding path program 6 times [2022-11-20 11:21:38,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:21:38,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897397037] [2022-11-20 11:21:38,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:21:38,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:21:38,143 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:21:38,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [707474072] [2022-11-20 11:21:38,144 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-20 11:21:38,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:21:38,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:21:38,145 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:21:38,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 11:21:38,470 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2022-11-20 11:21:38,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:21:38,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 53 conjunts are in the unsatisfiable core [2022-11-20 11:21:38,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:21:38,979 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 28 proven. 154 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2022-11-20 11:21:38,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:22:29,940 WARN L859 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_61| Int) (|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_36| Int)) (or (= (mod (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_61| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_61| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_61| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_61| 3) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_61| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_61| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_61| 2) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_61| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_61| 3)) 4) 0) (= (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_61| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_61|) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_61| 12) 36) (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_61| |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_36|) (* |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_36| 6)))))) is different from true [2022-11-20 11:22:48,007 WARN L859 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_61| Int) (|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_36| Int)) (or (= (mod (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_61| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_61| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_61| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_61| 3) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_61| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_61| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_61| 2) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_61| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_61| 3)) 4) 0) (= (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_61| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_61|) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_61| 12) 36) (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_61| |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_36|) (* |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_36| 6))))) (= c___VERIFIER_assert_~cond 0)) is different from true [2022-11-20 11:22:54,067 WARN L837 $PredicateComparison]: unable to prove that (or (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (or (<= |ULTIMATE.start_main_~k~0#1| (+ |c_ULTIMATE.start_main_~c~0#1| 6)) (< (+ |c_ULTIMATE.start_main_~c~0#1| 7) |ULTIMATE.start_main_~k~0#1|) (= (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) 49 (* |c_ULTIMATE.start_main_~y~0#1| 14)) (+ (* |c_ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~k~0#1|) (* 7 |ULTIMATE.start_main_~k~0#1|))))) (not (= (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 2) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3)) 4) 0))) is different from false [2022-11-20 11:22:56,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:22:56,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897397037] [2022-11-20 11:22:56,122 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:22:56,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707474072] [2022-11-20 11:22:56,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707474072] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:22:56,122 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:22:56,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2022-11-20 11:22:56,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430812509] [2022-11-20 11:22:56,123 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 11:22:56,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 11:22:56,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:22:56,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 11:22:56,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=578, Unknown=6, NotChecked=156, Total=870 [2022-11-20 11:22:56,125 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand has 17 states, 16 states have (on average 2.0625) internal successors, (33), 16 states have internal predecessors, (33), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-20 11:22:56,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:22:56,897 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2022-11-20 11:22:56,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 11:22:56,897 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.0625) internal successors, (33), 16 states have internal predecessors, (33), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 78 [2022-11-20 11:22:56,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:22:56,899 INFO L225 Difference]: With dead ends: 55 [2022-11-20 11:22:56,899 INFO L226 Difference]: Without dead ends: 50 [2022-11-20 11:22:56,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 34.9s TimeCoverageRelationStatistics Valid=149, Invalid=727, Unknown=6, NotChecked=174, Total=1056 [2022-11-20 11:22:56,901 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 6 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:22:56,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 244 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 563 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 11:22:56,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-11-20 11:22:56,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2022-11-20 11:22:56,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 35 states have (on average 1.0285714285714285) internal successors, (36), 35 states have internal predecessors, (36), 12 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-20 11:22:56,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2022-11-20 11:22:56,931 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 78 [2022-11-20 11:22:56,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:22:56,932 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2022-11-20 11:22:56,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.0625) internal successors, (33), 16 states have internal predecessors, (33), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-20 11:22:56,932 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2022-11-20 11:22:56,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-20 11:22:56,934 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:22:56,934 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:22:56,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 11:22:57,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:22:57,142 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:22:57,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:22:57,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1817498849, now seen corresponding path program 7 times [2022-11-20 11:22:57,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:22:57,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119959239] [2022-11-20 11:22:57,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:22:57,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:22:57,170 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:22:57,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2013479187] [2022-11-20 11:22:57,183 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-20 11:22:57,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:22:57,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:22:57,193 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:22:57,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 11:22:57,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:22:57,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-20 11:22:57,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:22:57,876 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 51 proven. 166 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-20 11:22:57,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:23:40,216 WARN L859 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_39| Int) (|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_74| Int)) (or (= (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_74| |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_39|) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_74| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_74|)) (= (mod (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_74| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_74| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_74| 2) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_74| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_74| 3) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_74| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_74| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_74| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_74| 3)) 4) 0)))) is different from true [2022-11-20 11:23:58,286 WARN L859 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_39| Int) (|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_74| Int)) (or (= (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_74| |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_39|) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_74| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_74|)) (= (mod (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_74| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_74| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_74| 2) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_74| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_74| 3) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_74| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_74| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_74| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_74| 3)) 4) 0))) (= c___VERIFIER_assert_~cond 0)) is different from true [2022-11-20 11:24:04,331 WARN L837 $PredicateComparison]: unable to prove that (or (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (or (not (< |c_ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|)) (< (+ |c_ULTIMATE.start_main_~c~0#1| 1) |ULTIMATE.start_main_~k~0#1|) (= (+ |ULTIMATE.start_main_~k~0#1| (* |c_ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~k~0#1|)) (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 2) 1)))) (not (= (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 2) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3)) 4) 0))) is different from false [2022-11-20 11:24:06,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:24:06,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119959239] [2022-11-20 11:24:06,364 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:24:06,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013479187] [2022-11-20 11:24:06,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013479187] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:24:06,364 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:24:06,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2022-11-20 11:24:06,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829999889] [2022-11-20 11:24:06,365 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 11:24:06,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 11:24:06,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:24:06,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 11:24:06,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=403, Unknown=11, NotChecked=126, Total=600 [2022-11-20 11:24:06,367 INFO L87 Difference]: Start difference. First operand 50 states and 59 transitions. Second operand has 18 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 states have internal predecessors, (35), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-20 11:24:07,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:24:07,074 INFO L93 Difference]: Finished difference Result 58 states and 68 transitions. [2022-11-20 11:24:07,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 11:24:07,075 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 states have internal predecessors, (35), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Word has length 85 [2022-11-20 11:24:07,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:24:07,076 INFO L225 Difference]: With dead ends: 58 [2022-11-20 11:24:07,076 INFO L226 Difference]: Without dead ends: 53 [2022-11-20 11:24:07,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 26.5s TimeCoverageRelationStatistics Valid=80, Invalid=521, Unknown=11, NotChecked=144, Total=756 [2022-11-20 11:24:07,078 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 7 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:24:07,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 260 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 11:24:07,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-11-20 11:24:07,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2022-11-20 11:24:07,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 37 states have (on average 1.027027027027027) internal successors, (38), 37 states have internal predecessors, (38), 13 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-20 11:24:07,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 63 transitions. [2022-11-20 11:24:07,103 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 63 transitions. Word has length 85 [2022-11-20 11:24:07,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:24:07,104 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 63 transitions. [2022-11-20 11:24:07,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 states have internal predecessors, (35), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-20 11:24:07,104 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 63 transitions. [2022-11-20 11:24:07,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-20 11:24:07,106 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:24:07,106 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:24:07,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 11:24:07,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:24:07,315 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:24:07,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:24:07,315 INFO L85 PathProgramCache]: Analyzing trace with hash 638795608, now seen corresponding path program 8 times [2022-11-20 11:24:07,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:24:07,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770519559] [2022-11-20 11:24:07,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:24:07,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:24:07,332 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:24:07,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1336543418] [2022-11-20 11:24:07,332 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:24:07,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:24:07,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:24:07,334 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:24:07,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 11:24:07,458 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:24:07,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:24:07,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 11:24:07,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:24:07,996 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 264 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2022-11-20 11:24:07,997 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:24:07,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:24:07,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770519559] [2022-11-20 11:24:07,997 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:24:07,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336543418] [2022-11-20 11:24:07,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336543418] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:24:07,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:24:07,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-20 11:24:07,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929949313] [2022-11-20 11:24:07,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:24:08,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 11:24:08,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:24:08,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 11:24:08,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:24:08,003 INFO L87 Difference]: Start difference. First operand 53 states and 63 transitions. Second operand has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 12 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-20 11:24:08,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:24:08,568 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2022-11-20 11:24:08,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 11:24:08,569 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 12 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 92 [2022-11-20 11:24:08,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:24:08,569 INFO L225 Difference]: With dead ends: 57 [2022-11-20 11:24:08,569 INFO L226 Difference]: Without dead ends: 0 [2022-11-20 11:24:08,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2022-11-20 11:24:08,571 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 7 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:24:08,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 104 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:24:08,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-20 11:24:08,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-20 11:24:08,573 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) [2022-11-20 11:24:08,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 11:24:08,574 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 92 [2022-11-20 11:24:08,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:24:08,574 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 11:24:08,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 12 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-20 11:24:08,575 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-20 11:24:08,575 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 11:24:08,578 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 11:24:08,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-20 11:24:08,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:24:08,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-20 11:24:10,739 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-20 11:24:10,741 INFO L895 garLoopResultBuilder]: At program point L27-2(lines 27 36) the Hoare annotation is: (let ((.cse4 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (let ((.cse2 (or (= (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~y~0#1|) .cse4) (< |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|))) (.cse0 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse1 (<= |ULTIMATE.start_main_~k~0#1| 10)) (.cse3 (= (+ (* (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) 2) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) .cse4) (* |ULTIMATE.start_main_~x~0#1| 4)))) (or (and .cse0 (= 2 |ULTIMATE.start_main_~y~0#1|) .cse1 .cse2 (= 2 |ULTIMATE.start_main_~c~0#1|) .cse3) (and .cse0 (= |ULTIMATE.start_main_~c~0#1| 1) (= |ULTIMATE.start_main_~y~0#1| 1) .cse1 .cse2 .cse3) (and .cse0 (= 5 |ULTIMATE.start_main_~y~0#1|) (= 5 |ULTIMATE.start_main_~c~0#1|) .cse1 .cse2 .cse3) (and .cse0 (= 7 |ULTIMATE.start_main_~c~0#1|) (= 7 |ULTIMATE.start_main_~y~0#1|) .cse1 (< 6 |ULTIMATE.start_main_~k~0#1|) .cse3) (and (<= 0 |ULTIMATE.start_main_~k~0#1|) .cse0 (= |ULTIMATE.start_main_~c~0#1| 0) (= |ULTIMATE.start_main_~y~0#1| 0) .cse1 (= |ULTIMATE.start_main_~x~0#1| 0)) (and .cse0 .cse1 (= |ULTIMATE.start_main_~c~0#1| 8) (= |ULTIMATE.start_main_~y~0#1| 8) (< 7 |ULTIMATE.start_main_~k~0#1|) .cse3) (and .cse0 (= 6 |ULTIMATE.start_main_~y~0#1|) .cse1 .cse2 .cse3 (= 6 |ULTIMATE.start_main_~c~0#1|)) (and .cse0 (= |ULTIMATE.start_main_~y~0#1| 4) .cse1 .cse2 (= |ULTIMATE.start_main_~c~0#1| 4) .cse3) (and .cse0 (= 3 |ULTIMATE.start_main_~y~0#1|) .cse1 (< 2 |ULTIMATE.start_main_~k~0#1|) (= 3 |ULTIMATE.start_main_~c~0#1|) .cse3) (and .cse0 (= 9 |ULTIMATE.start_main_~c~0#1|) .cse1 (< 8 |ULTIMATE.start_main_~k~0#1|) (= 9 |ULTIMATE.start_main_~y~0#1|) .cse3) (and .cse0 (<= 10 |ULTIMATE.start_main_~c~0#1|) (< 9 |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~c~0#1| 10) .cse1 (= |ULTIMATE.start_main_~y~0#1| 10) .cse3)))) [2022-11-20 11:24:10,743 INFO L895 garLoopResultBuilder]: At program point L27-3(lines 27 36) the Hoare annotation is: (let ((.cse1 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (let ((.cse0 (= (+ (* (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) 2) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) .cse1) (* |ULTIMATE.start_main_~x~0#1| 4)))) (or (and (<= |ULTIMATE.start_main_~k~0#1| 1) (<= |ULTIMATE.start_main_~c~0#1| 1) (= |ULTIMATE.start_main_~y~0#1| 1) (< 0 |ULTIMATE.start_main_~k~0#1|) .cse0) (and (<= |ULTIMATE.start_main_~k~0#1| 2) (= 2 |ULTIMATE.start_main_~y~0#1|) (< 1 |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~c~0#1| 2) .cse0) (and (= |ULTIMATE.start_main_~y~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0)) (let ((.cse3 (< (+ |ULTIMATE.start_main_~c~0#1| 1) |ULTIMATE.start_main_~k~0#1|)) (.cse2 (< (+ 2 |ULTIMATE.start_main_~c~0#1|) |ULTIMATE.start_main_~k~0#1|))) (and (<= 0 |ULTIMATE.start_main_~k~0#1|) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~y~0#1|) .cse1) (or .cse2 (not .cse3)) (or (not (< |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|)) .cse3) (<= |ULTIMATE.start_main_~k~0#1| 10) (or (< (+ 3 |ULTIMATE.start_main_~c~0#1|) |ULTIMATE.start_main_~k~0#1|) (not .cse2)) .cse0))))) [2022-11-20 11:24:10,743 INFO L899 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2022-11-20 11:24:10,743 INFO L899 garLoopResultBuilder]: For program point L38(line 38) no Hoare annotation was computed. [2022-11-20 11:24:10,743 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-20 11:24:10,744 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-20 11:24:10,744 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-20 11:24:10,744 INFO L895 garLoopResultBuilder]: At program point L28(line 28) the Hoare annotation is: (let ((.cse4 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (let ((.cse2 (or (= (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~y~0#1|) .cse4) (< |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|))) (.cse0 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse1 (<= |ULTIMATE.start_main_~k~0#1| 10)) (.cse3 (= (+ (* (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) 2) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) .cse4) (* |ULTIMATE.start_main_~x~0#1| 4)))) (or (and .cse0 (= 2 |ULTIMATE.start_main_~y~0#1|) .cse1 .cse2 (= 2 |ULTIMATE.start_main_~c~0#1|) .cse3) (and .cse0 (= |ULTIMATE.start_main_~c~0#1| 1) (= |ULTIMATE.start_main_~y~0#1| 1) .cse1 .cse2 .cse3) (and .cse0 (= 5 |ULTIMATE.start_main_~y~0#1|) (= 5 |ULTIMATE.start_main_~c~0#1|) .cse1 .cse2 .cse3) (and .cse0 (= 7 |ULTIMATE.start_main_~c~0#1|) (= 7 |ULTIMATE.start_main_~y~0#1|) .cse1 (< 6 |ULTIMATE.start_main_~k~0#1|) .cse3) (and (<= 0 |ULTIMATE.start_main_~k~0#1|) .cse0 (= |ULTIMATE.start_main_~c~0#1| 0) (= |ULTIMATE.start_main_~y~0#1| 0) .cse1 (= |ULTIMATE.start_main_~x~0#1| 0)) (and .cse0 .cse1 (= |ULTIMATE.start_main_~c~0#1| 8) (= |ULTIMATE.start_main_~y~0#1| 8) (< 7 |ULTIMATE.start_main_~k~0#1|) .cse3) (and .cse0 (= 6 |ULTIMATE.start_main_~y~0#1|) .cse1 .cse2 .cse3 (= 6 |ULTIMATE.start_main_~c~0#1|)) (and .cse0 (= |ULTIMATE.start_main_~y~0#1| 4) .cse1 .cse2 (= |ULTIMATE.start_main_~c~0#1| 4) .cse3) (and .cse0 (= 3 |ULTIMATE.start_main_~y~0#1|) .cse1 (< 2 |ULTIMATE.start_main_~k~0#1|) (= 3 |ULTIMATE.start_main_~c~0#1|) .cse3) (and .cse0 (= 9 |ULTIMATE.start_main_~c~0#1|) .cse1 (< 8 |ULTIMATE.start_main_~k~0#1|) (= 9 |ULTIMATE.start_main_~y~0#1|) .cse3) (and .cse0 (<= 10 |ULTIMATE.start_main_~c~0#1|) (< 9 |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~c~0#1| 10) .cse1 (= |ULTIMATE.start_main_~y~0#1| 10) .cse3)))) [2022-11-20 11:24:10,746 INFO L899 garLoopResultBuilder]: For program point L28-1(lines 27 36) no Hoare annotation was computed. [2022-11-20 11:24:10,746 INFO L902 garLoopResultBuilder]: At program point L39(lines 17 40) the Hoare annotation is: true [2022-11-20 11:24:10,747 INFO L899 garLoopResultBuilder]: For program point L6(lines 6 8) no Hoare annotation was computed. [2022-11-20 11:24:10,747 INFO L895 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: (= (+ (* (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) 2) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* |ULTIMATE.start_main_~x~0#1| 4)) [2022-11-20 11:24:10,747 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 9 15) the Hoare annotation is: true [2022-11-20 11:24:10,747 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 12) no Hoare annotation was computed. [2022-11-20 11:24:10,747 INFO L899 garLoopResultBuilder]: For program point L10(lines 10 13) no Hoare annotation was computed. [2022-11-20 11:24:10,748 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 9 15) no Hoare annotation was computed. [2022-11-20 11:24:10,748 INFO L899 garLoopResultBuilder]: For program point L10-2(lines 9 15) no Hoare annotation was computed. [2022-11-20 11:24:10,748 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2022-11-20 11:24:10,752 INFO L444 BasicCegarLoop]: Path program histogram: [8, 1, 1, 1] [2022-11-20 11:24:10,769 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 11:24:10,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:24:10 BoogieIcfgContainer [2022-11-20 11:24:10,813 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 11:24:10,813 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 11:24:10,814 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 11:24:10,814 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 11:24:10,827 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:19:16" (3/4) ... [2022-11-20 11:24:10,831 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 11:24:10,840 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-11-20 11:24:10,846 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2022-11-20 11:24:10,847 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-20 11:24:10,848 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 11:24:10,848 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 11:24:10,899 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 11:24:10,899 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 11:24:10,900 INFO L158 Benchmark]: Toolchain (without parser) took 295374.74ms. Allocated memory is still 167.8MB. Free memory was 138.9MB in the beginning and 60.7MB in the end (delta: 78.2MB). Peak memory consumption was 80.8MB. Max. memory is 16.1GB. [2022-11-20 11:24:10,900 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 117.4MB. Free memory is still 84.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:24:10,901 INFO L158 Benchmark]: CACSL2BoogieTranslator took 328.66ms. Allocated memory is still 167.8MB. Free memory was 138.9MB in the beginning and 128.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 11:24:10,901 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.69ms. Allocated memory is still 167.8MB. Free memory was 128.4MB in the beginning and 126.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:24:10,902 INFO L158 Benchmark]: Boogie Preprocessor took 38.82ms. Allocated memory is still 167.8MB. Free memory was 126.9MB in the beginning and 125.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:24:10,902 INFO L158 Benchmark]: RCFGBuilder took 461.41ms. Allocated memory is still 167.8MB. Free memory was 125.9MB in the beginning and 115.9MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 11:24:10,903 INFO L158 Benchmark]: TraceAbstraction took 294394.40ms. Allocated memory is still 167.8MB. Free memory was 115.3MB in the beginning and 62.8MB in the end (delta: 52.5MB). Peak memory consumption was 77.1MB. Max. memory is 16.1GB. [2022-11-20 11:24:10,903 INFO L158 Benchmark]: Witness Printer took 85.74ms. Allocated memory is still 167.8MB. Free memory was 62.8MB in the beginning and 60.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:24:10,905 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 117.4MB. Free memory is still 84.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 328.66ms. Allocated memory is still 167.8MB. Free memory was 138.9MB in the beginning and 128.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.69ms. Allocated memory is still 167.8MB. Free memory was 128.4MB in the beginning and 126.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.82ms. Allocated memory is still 167.8MB. Free memory was 126.9MB in the beginning and 125.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 461.41ms. Allocated memory is still 167.8MB. Free memory was 125.9MB in the beginning and 115.9MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 294394.40ms. Allocated memory is still 167.8MB. Free memory was 115.3MB in the beginning and 62.8MB in the end (delta: 52.5MB). Peak memory consumption was 77.1MB. Max. memory is 16.1GB. * Witness Printer took 85.74ms. Allocated memory is still 167.8MB. Free memory was 62.8MB in the beginning and 60.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 12]: 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 2 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 294.2s, OverallIterations: 11, TraceHistogramMax: 13, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 5.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 139 SdHoareTripleChecker+Valid, 3.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 134 mSDsluCounter, 1367 SdHoareTripleChecker+Invalid, 2.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1121 mSDsCounter, 79 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2602 IncrementalHoareTripleChecker+Invalid, 2681 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 79 mSolverCounterUnsat, 246 mSDtfsCounter, 2602 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 716 GetRequests, 513 SyntacticMatches, 1 SemanticMatches, 202 ConstructedPredicates, 13 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 109.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred in iteration=10, InterpolantAutomatonStates: 133, 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, 11 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 33 PreInvPairs, 68 NumberOfFragments, 989 HoareAnnotationTreeSize, 33 FomulaSimplifications, 189 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 6 FomulaSimplificationsInter, 1253 FormulaSimplificationTreeSizeReductionInter, 1.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 282.3s InterpolantComputationTime, 520 NumberOfCodeBlocks, 518 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 550 ConstructedInterpolants, 0 QuantifiedInterpolants, 2486 SizeOfPredicates, 33 NumberOfNonLiveVariables, 1463 ConjunctsInSsa, 320 ConjunctsInUnsatCore, 13 InterpolantComputations, 3 PerfectInterpolantSequences, 1264/1856 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: ((((((((((((((cond == 1 && 2 == y) && k <= 10) && (k * y == y * y || c < k)) && 2 == c) && y * y * y * 2 + y * y * y * y + y * y == x * 4) || (((((cond == 1 && c == 1) && y == 1) && k <= 10) && (k * y == y * y || c < k)) && y * y * y * 2 + y * y * y * y + y * y == x * 4)) || (((((cond == 1 && 5 == y) && 5 == c) && k <= 10) && (k * y == y * y || c < k)) && y * y * y * 2 + y * y * y * y + y * y == x * 4)) || (((((cond == 1 && 7 == c) && 7 == y) && k <= 10) && 6 < k) && y * y * y * 2 + y * y * y * y + y * y == x * 4)) || (((((0 <= k && cond == 1) && c == 0) && y == 0) && k <= 10) && x == 0)) || (((((cond == 1 && k <= 10) && c == 8) && y == 8) && 7 < k) && y * y * y * 2 + y * y * y * y + y * y == x * 4)) || (((((cond == 1 && 6 == y) && k <= 10) && (k * y == y * y || c < k)) && y * y * y * 2 + y * y * y * y + y * y == x * 4) && 6 == c)) || (((((cond == 1 && y == 4) && k <= 10) && (k * y == y * y || c < k)) && c == 4) && y * y * y * 2 + y * y * y * y + y * y == x * 4)) || (((((cond == 1 && 3 == y) && k <= 10) && 2 < k) && 3 == c) && y * y * y * 2 + y * y * y * y + y * y == x * 4)) || (((((cond == 1 && 9 == c) && k <= 10) && 8 < k) && 9 == y) && y * y * y * 2 + y * y * y * y + y * y == x * 4)) || ((((((cond == 1 && 10 <= c) && 9 < k) && c <= 10) && k <= 10) && y == 10) && y * y * y * 2 + y * y * y * y + y * y == x * 4) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-20 11:24:10,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e8ef4572-0d09-4f53-9ebe-c0c2a5a39e02/bin/uautomizer-ug76WZFUDN/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